{
  "id": "iran",
  "title": "Iran",
  "lang": "en",
  "source_lang": "en",
  "summary": "Iran is a large West Asian country on the Iranian Plateau, with a long history, a Persian-speaking majority, an Islamic republic since 1979, and major oil and gas reserves.",
  "category": "geography",
  "subcategory": "",
  "type": "place",
  "aliases": [
    "Persia",
    "Islamic Republic of Iran"
  ],
  "generated_at": "2026-10-09",
  "model": "pro/claude-haiku-5-5",
  "url": "https://aiwiki.page/en/iran/",
  "translations": {
    "zh-Hans": {
      "url": "https://aiwiki.page/zh/iran/",
      "json": "https://aiwiki.page/zh/iran.json"
    }
  },
  "sections": [
    {
      "heading": "",
      "text": "Iran, officially the Islamic Republic of Iran and known in older Western usage as Persia, is a country of about 1.65 million square kilometres in Western Asia. It occupies most of the Iranian Plateau, lies between the Caspian Sea and the Persian Gulf, and borders Iraq, Turkey, Armenia, Azerbaijan, Turkmenistan, Afghanistan and Pakistan. Its position links the Caucasus, Central Asia, the Middle East and South Asia, and its southern coast faces the oil-carrying Strait of Hormuz. The country's geography, arid interior, mountain ranges and water scarcity have shaped where people live, how the economy works, and how the state has developed.\n\nIran is important for several reasons. It is one of the oldest continuous centres of state formation in the world, from the Elamite and Achaemenid periods through the Parthian and Sasanian empires, and its Persian language and literature have influenced a large region. It is also a major energy producer with one of the largest proven hydrocarbon reserves, a state organised around Shia Islam and a constitutional system with an elected presidency and parliament under a government led by a Supreme Leader. Its nuclear programme, sanctions regime and regional role make it a central subject in international politics, and the armed conflict that began in early 2026 has changed the country's leadership and security situation.\n\nThis entry covers Iran's location and physical geography, water and climate, ecosystems, population and languages, ancient and Islamic-era history, the Qajar and Pahlavi periods, the 1979 revolution and the Islamic Republic, government and security institutions, the economy, energy and infrastructure, culture, science and education, foreign relations and the nuclear issue, the 2026 war and human rights. Current political and military facts are stated as of October 2026 and may change quickly. Names such as \"Persian Gulf\" and \"Arabian Gulf\" vary by country and should be noted where they appear."
    },
    {
      "heading": "Location, borders and strategic position",
      "text": "Iran covers an area of about 1.65 million square kilometres in western Asia. Its territory has two distinct maritime frontiers. The northern edge meets the Caspian Sea, the largest landlocked body of water on Earth, while the southern coast faces the Persian Gulf (called the Arabian Gulf in many Arab states) and the Gulf of Oman. Iran occupies the northern shore of the oil-carrying Strait of Hormuz, which links the Persian Gulf to the open Indian Ocean and is one of the world's most important shipping chokepoints.\n\nThe country has seven land neighbours. Armenia, Azerbaijan and Turkmenistan lie to the north, Afghanistan and Pakistan to the east, and Iraq and Turkey to the west. This arrangement places Iran between the Caucasus and Anatolia, Central Asia, and the Indian subcontinent. Historically, this position made it a land bridge for trade and military movement, a role linked to routes such as the Silk Road. The same geography explains why its neighbours and outside powers have long treated its territory as strategically significant.\n\nThe Caspian Sea is shared by five littoral states: Azerbaijan, Iran, Kazakhstan, Russia and Turkmenistan. The littoral states describe it as a landlocked body of water, so they apply a combination of maritime and inland-water principles rather than the rules for open seas alone (The Convention indicates that the littoral states regard it as a 'landlocked body of water,' merging principles from both maritime and inland water laws to address unique regional challenges.). After more than two decades of talks, the five states signed the Convention on the Legal Status of the Caspian Sea at Aktau on 12 August 2018. The treaty establishes sovereign and exclusive rights for each of the coastal States in their respective \"territorial waters\" and seabed and subsoil \"sectors\". Under its terms, the coastal zone extends about 15 nautical miles, fishing zones extend to 25 nautical miles, and the remaining waters are neutral zones open to common use. The convention also excludes non-Caspian states from military deployment on the sea, a provision that Iran's president at the time cited as a key achievement (Rohani also hailed a clause in the convention that prevents non-Caspian countries from deploying military forces on the Caspian Sea). The convention does not, however, fix every boundary. Delimitation of the seabed and subsoil into sectors requires separate agreements among littoral states. Because the convention takes legal effect only after all five states ratify it, the practical implications for Iran depend on that ratification and on the follow-up agreements.\n\nName history\n\nThe English name \"Persia\" derives from the Greek form of Persis, the Greek name for the southwestern region that is today Fars province. \"Persia\" is the old Western name, taken from the southern province of Pars, while \"Iran\" is the name Iranians have used for themselves for a very long time. The Persian word Iran is linked to older terms meaning \"land of the Iranians,\" found in Avestan and Sasanian sources.\n\nThe formal change came in 1935. Reza Shah Pahlavi's government asked foreign governments to use \"Iran\" rather than \"Persia\" in official correspondence, with the change effective from Nowruz, 21 March 1935. Sources differ on the date of the circular itself: one gives 21 March as the date of the note, while another states that the Persian Foreign Ministry had sent a memorandum on 25 December 1934, requesting that the terms \"Iran\" and \"Iranian\" be used in official correspondence and conversation from 21 March 1935 onward. The names continued to be used interchangeably for some years. During the Second World War, the Allies asked Iran to accept \"Persia\" for the duration of the conflict to avoid confusion with Iraq, which was also under Allied occupation (Winston Churchill requested that the Iranian government allow the old name \"Persia\" to be used by the United Nations). After the war, \"Iran\" became the standard name in official use.\n\nThe state's current name reflects a later political change. The Islamic Republic was proclaimed on 1 April 1979, after the revolution that ended the monarchy. The Islamic Republic has kept the name \"Iran,\" so the country's formal name has remained unchanged since 1935."
    },
    {
      "heading": "Physical geography: plateau, mountains and deserts",
      "text": "Most of Iran sits on a high interior landmass. Geologists use the term \"Iranian plateau\" for the area lying north of the folded belts that formed when the Arabian plate pressed into the Eurasian plate, a process of continental collision that continues to shape the region. The plateau is not one uniform surface. The centre of Iran consists of several closed basins that collectively are referred to as the Central Plateau. The average elevation of this plateau is about 900 metres (2,953 ft), but several of the mountains that tower over the plateau exceed 3,000 metres (9,843 ft). Because the basins are closed, water collects in them rather than draining to the sea, which affects both drainage and the location of salt flats.\n\nThe plateau is enclosed by two major mountain systems. The Zagros, which forms the western and southwestern edge, consists of a series of parallel ridges interspersed with plains that bisect the country from northwest to southeast. Many peaks in the Zagros exceed 3,000 meters above sea level, and in the south-central region of the country there are at least five peaks that are over 4,000 meters. Further southeast the chain lowers, and its average peak height declines dramatically to under 1,500 metres (4,921 ft). The Alborz range, in the north, is the narrow but high chain that rims the southern Caspian coast. Its highest point is Mount Damavand, a volcanic peak in the central Alborz. Sources give different heights for it: 5,610 m (18,410 ft) in one reference that marks the figure as disputed, while other tourism and atlas sources cite 5,671 meters and 18,934 ft (5,771m). The 5,610 m figure is the most widely used in the geographic literature. Damavand is also the second highest mountain on the Eurasian landmass west of the Hindu Kush, after Mount Elbrus.\n\nNorth of the Alborz lies the Caspian lowland, the only large area of low, humid land apart from the Khuzestan plain. It runs along the sea for a considerable distance, but it is narrow. It extends for some 640 kilometers along the Caspian shore, but its widest point is less than 50 kilometers, while at some places less than 2 kilometers separate the shore from the Alborz foothills. This strip contrasts sharply with the dry interior, and its moisture and mild climate support the agriculture discussed in later sections.\n\nThe eastern half of the plateau is dominated by deserts. The eastern part of the plateau is covered by two salt deserts, the Dasht-e Kavir (Great Salt Desert) and the Dasht-e Lut. The Dasht-e Kavir is very large: one reference gives an area of 77,600 km2 (30,000 mi2), and it lies in the middle of the Iranian Plateau. Its surface is sandstone and salty desert plateau, which in the heat of summer is one of the hottest places on the planet. Because of these conditions, except for some scattered oases, these deserts are uninhabited. Settlement in the interior therefore clustered around springs, wells and the oases at the desert margins, which is why the historic network of oases and the water-transport systems described in the water section were so important for towns and caravan routes.\n\nIn the southwest, the Khuzestan plain is an exception to the upland pattern. It is a roughly triangular-shaped extension of the Mesopotamia plain and averages about 160 kilometres (99 mi) in width. The plain extends for about 120 kilometers inland, barely rising a few meters above sea level, then meets abruptly with the first foothills of the Zagros. Much of it is low and wet, and much of the Khuzestan plain is covered with marshes. The Karun River crosses the plain and supports irrigated farming, and the area also holds large oil reserves, which link it to the petroleum industry that is treated in the economy section."
    },
    {
      "heading": "Water resources and hydrology",
      "text": "Iran's water system is shaped by aridity. Most of the country receives little rain, and the few perennial rivers are concentrated in the mountain rim. The river network is dominated by the Karun in the southwest, which is the largest navigable river and carries much of the country's surface flow toward the Persian Gulf. In the centre of the plateau, the Zayandeh Rud has for centuries supplied the irrigation that made Isfahan's gardens and fields possible, and it has been one of the most heavily drawn-on rivers in the country. The Caspian Sea, the largest enclosed water body on Earth, lies to the north, although it is a sea and not a lake in the usual sense, and its level and salinity are discussed separately in the entry on the Caspian.\n\nLake Urmia in the northwest illustrates how fast the system can change. It is a hypersaline lake that was once among the largest saline lakes in the world. One basin study notes that the lake had shrunk to about 10% of its 1972 size by 2017, and another study finds that its surface area fell by about 30% between 1998 and 2018. The explanations differ in emphasis. Some studies argue that drought and climate trends were important, but that human factors, including dams on the rivers that feed the lake and the pumping of groundwater for irrigation, had the larger effect. Others argue that the lake has survived severe droughts before, and that the decisive change came from reduced river inflow. The consequence has been exposed salt flats, damage to soils and dust, and the loss of wetland habitat for birds.\n\nGroundwater is the largest reserve in practice, and its depletion is now among the most serious problems. Deep wells, drilled in large numbers since the mid-twentieth century, lowered water tables faster than natural recharge could replace them. The traditional qanat system works differently. A qanat is a gently sloping underground tunnel with vertical access shafts, which conveys groundwater by gravity to the surface, so that no pumping is needed. Many qanats were built for centuries across the plateau, and one 2014 count cited by a heritage source put the number of active qanats at about 37,000. As wells drew down the aquifers, many qanats dried out and collapsed, and the collapse of their walls has caused localized subsidence. Land subsidence is now widespread: one 2025 national study describes some of the fastest subsidence rates in the world, with peaks above 200 mm a year in some regions, and Tehran's southern plain has recorded rates of up to around 30 cm a year in recent studies.\n\nRecurring drought has turned these structural problems into acute shortages. Iran has a very low average annual precipitation, and the 2025 water year was reported as one of the driest on record, with rainfall well below the historical average for the same period. The five main reservoirs supplying Tehran fell to very low levels in late 2025, and by spring 2026 they held only about 18% of their combined capacity, according to the spokesman of the city's water utility. Authorities introduced night-time pressure cuts and rationing in parts of the capital, and President Masoud Pezeshkian publicly raised the possibility of evacuating the city if rains did not return. Mashhad, Isfahan and other large cities have faced similar pressures. Disputes with neighbours over transboundary rivers, including shared river systems on the eastern and western borders, add a further political layer, because upstream dam construction by neighbours reduces inflows into Iranian territory.\n\nWater is therefore a policy question that links farming, urban growth and climate change. Agriculture is by far the largest user, with one 2025 report estimating that about 90% of the country's water goes to farming, much of it low-yield irrigation driven by the goal of food self-sufficiency. Urban demand is growing, and leaking pipe networks in some cities cause large losses. Warming and reduced winter snowpack in the mountains reduce the snowmelt that feeds aquifers and rivers. Analysts disagree on how much of the crisis is climatic and how much is the result of management choices, but most official and academic accounts treat both as central, and they increasingly describe the situation as a deficit that cannot be reversed by a single good rainy season."
    },
    {
      "heading": "Climate and weather",
      "text": "Much of Iran lies within the subtropical dry belt. The Alborz and Zagros mountains shield many regions from humid air masses, which leads to the formation of extensive arid zones. A breakdown of climate categories cited by the Atlantic Council places roughly 35 percent of the country in the hyper-arid class and about 29 percent in the arid class, with around 10 percent classed as wet. Climate classifications differ by method, so these shares should be read as one source's estimate.\n\nRegional contrasts are sharp. The Caspian littoral is the main exception: its humid subtropical regime brings annual rainfall from about 100 to 150 cm, and towns such as Rasht and Sari record more than 1,000 mm a year. By contrast, plateau rainfall is much lower, and the deserts and Persian Gulf littoral receive less than 13 cm in a typical year. The northwest and west have cold winters, and heavy snowfall and subfreezing temperatures occur from December to February. Along the Persian Gulf and Gulf of Oman, summers are hot and damp. Daytime highs near 38 °C are typical at Bandar Abbas, and the humidity coming from the sea makes the heat sweltering and hard to bear. Some sources report southern summer temperatures above 50 °C.\n\nSeasonal patterns also matter. About 70 percent of the average rainfall in the country falls between November and March; June through August are often rainless. Winter storms are often intense and short-lived, causing erosion and local flooding. In summer, dust devils form daily across the plateau and lift sand and dust into the air. Dusty winds combined with high heat create some of the most dangerous conditions for people working outdoors, as the most dangerous conditions arise when high temperatures are combined with the occasional strong, dusty winds.\n\nProjections point toward further warming and drying, although estimates vary by study, period and emissions scenario. One widely cited projection, drawn from recent reports, anticipates a 35% decrease in annual precipitation, accompanied by a 2.6-degree Celsius rise in temperature. A study of Iran's river basins found that temperatures have risen since 1950 at rates of roughly 0.015 to 0.045 °C per year, and its model extrapolations suggest continued warming (1–3 °C) and precipitation declines across more than 80% of Iran by 2040. A 2026 assessment attributes the intensifying drought signal largely to higher potential evapotranspiration under warming, which can offset small rises in rainfall. Rainfall itself may become more erratic: a 2018 projection anticipated extended dry periods interrupted by intermittent heavy rainfalls, which would increase the risk of floods. These trends bear directly on water supply, agriculture and urban growth, as discussed in the water section, and they raise heat-related health risks in the Gulf lowlands and in the interior's largest cities."
    },
    {
      "heading": "Ecosystems, biodiversity and environmental pressures",
      "text": "The most distinctive ecosystem in the north is the Hyrcanian forest belt on the Caspian slopes. The Hyrcanian Forests form a unique forested massif that stretches along the Caspian Sea in Azerbaijan and Iran. The broadleaf forests are very old: their lineage dates back 25 to 50 million years, when they covered most of this Northern Temperate region. Sources differ on how much of Iran's flora the belt holds. UNESCO's nomination material places about 44% of known vascular plants in Iran in a region that covers roughly 7% of the country, while another assessment puts the region at 6% of the land area. Endemism is high: approximately 280 taxa are endemic and sub-endemic to the Hyrcanian region. Fauna includes 180 species of birds typical of broad-leaved temperate forests and 58 mammal species.\n\nThe mountains and deserts support a different set of large mammals. The Persian leopard is the globally threatened Persian leopard, and it persists in the Alborz and Zagros ranges, where forest cover, prey availability and human encroachment largely determine how far its populations can spread. The Asiatic cheetah, once common across the central plateau and desert margins, has been nearly eliminated from its former range; conservation programmes since the 2000s have focused on protected habitat, prey recovery and attempts at reintroduction in central Iran. Persian fallow deer and Armenian sheep survive on a few islands in Lake Urmia, where mainland predators have a harder time reaching them, although the declining lake level increased airborne dust from the exposed lakebed and allowed mainland predators to reach some of these islands.\n\nLake Urmia is the clearest case of wetland collapse. By 2017 Lake Urmia had shrunk to only 10% of its original size (1972) due to multiple causes. Satellite studies indicate that the lake lost 88% of its area in 2015. Researchers generally identify reduced river inflow as the central mechanism: reduced river discharge is regarded as the main cause of the shrinkage, and this reduction is tied to upstream irrigation expansion and dam construction. Until 2012, more than 200 dams on river basins of the lake were ready for operation or in the last design stages. As salinity rose, the lake's invertebrate fauna collapsed. Artemia urmiana has lost more than 90% of its population during the decade from 1994 (rainy period) to 2004 (drought period), and the flamingos that once used the lake's islands have declined sharply as water levels fell. Smaller wetlands on the Caspian coast, including the Anzali system, have been reduced by drainage for agriculture, sediment trapping and urban expansion, although the scale of loss at each site is not uniformly documented.\n\nLand degradation affects the interior more broadly. Overgrazing, cultivation on marginal soils, the spread of salt flats from drying lakes and aquifers, and the decline in vegetation cover all accelerate erosion and desertification, and dust from exposed salt beds is now a regional concern. These processes are linked to groundwater depletion, because pumping lowers the water table that once sustained wetlands and oases.\n\nAir pollution is most acute in Tehran, where the city lies in a bowl against the Alborz range. Traffic from an aging vehicle fleet, industrial emissions and fuel quality contribute to high concentrations of fine particulates. During cold months, temperature inversions trap pollutants close to the ground, and authorities periodically restrict traffic and close schools when levels exceed health thresholds. Similar patterns recur in other large cities, including Isfahan and Ahvaz, where dust and industrial emissions combine with local meteorology."
    },
    {
      "heading": "Population, settlement and urbanization",
      "text": "Iran's population figures depend on the source and the reference year, so the numbers below should be read as estimates. A UN-based series places the mid-2026 total at 93,168,497 people at mid-year, which would rank the country around number 17 in the list of countries and dependencies by population. Other compilations are lower or higher. The Wikipedia demographics article gives 87,021,053 (2026 est.), while a July 2026 update from Georank cites 93,580,141 people, as of 2026 based on the adjusted UN estimation. The gap of several million reflects differing methods, census gaps and projection assumptions, and it means that any single figure should be attributed to its source and date.\n\nGrowth has slowed relative to the late twentieth century. One UN-based dataset reports that over the previous ten years the population grew by 11.2%, and the same series projects continued but diminishing gains over the coming decades. Population density is low overall, because the central and eastern deserts, including the Dasht-e Kavir and Dasht-e Lut, hold very few people. Most inhabitants live in the north, the northwest and the west, in the Caspian lowlands and the Alborz foothills, in the Zagros valleys, and in the cities of the Iranian Plateau's western and northern edges, while the capital region around Tehran is the largest concentration of population.\n\nUrbanization is the most clearly documented demographic trend, although the percentages vary. A Worldometer series gives 73.5% of the population is urban for 2026, while a StatisticsTimes table gives an urban share of 77.733 percent for the same year. The World Bank's indicator for 2024 is 77.0% urban population share, and it notes that urban classification depends on national definitions. The longer trend is clear in census-based data: the urban share was 54.0 percent in the 1986 census and 74.0 percent in the 2016 census. In 1980 it stood at about half the population, so the shift from countryside to towns took place within a few decades. The main drivers were rural-to-urban migration, the expansion of services and industry, and the growth of metropolitan areas, of which Tehran is by far the largest.\n\nFertility has fallen more sharply than almost any other demographic indicator. One World Bank case study records that in 1980 Iran's total fertility rate was 6.58, but by 2006 it had declined to 1.9. Estimates for later years differ. UNFPA states that Iran reached low levels of fertility (1.6 children per woman in 2022), and it treats the country as having completed its demographic transition. A UN-based projection gives 1.66 children per woman in 2026, while Wikipedia's demographics article cites a 2025 estimate of 1.35 children born/woman. Researchers also disagree on the level. A Carnegie Endowment analysis cites Stanford Iran 2040 Project work suggesting that the Islamic Republic likely had a total fertility rate in 2016 between 2.0 and 2.1 births per woman, which would be much higher than the lower estimates. Official policy has changed over time, and the state has at various points promoted both family planning and population growth, but the observed decline has continued in most estimates.\n\nPopulation ageing follows from falling fertility and rising life expectancy. UNFPA describes Iran as experiencing one of the fastest rates of population ageing, and it attributes this primarily due to increased life expectancy and declining fertility rates. It projects that by 2050, 27.9 percent of the population will be aged over 60 years, with women forming a majority of that group. The share aged 65 and over is still comparatively small; Wikipedia's demographics article gives 65 and over: 7% for 2024, but this share is rising. Median age figures also vary, from 34.5 years in the Worldometer series to 32 years in an early-2025 figure cited by Wikipedia, which again reflects differing sources and dates."
    },
    {
      "heading": "Languages, ethnic groups and religion",
      "text": "Languages\n\nPersian (Farsi) is the official language and the main lingua franca. It belongs to the Indo-European language family and is written in a modified Arabic script, even though Arabic itself is a Semitic language spoken by a minority of Iranians. Several other languages are spoken by communities large enough to matter politically and culturally. Azerbaijani is a Turkic language that is closer to Turkish than to Persian. Kurdish, Balochi, Lurish and Turkmen are also widely spoken, and Gilaki and Mazanderani are northern languages of the Caspian provinces. Most speakers of these languages also use Persian in public life, which keeps it as the common language of administration and education.\n\nLanguage statistics are less reliable than their precision suggests. The most recent official count of ethnicity and language categories dates to 1976, under the Pahlavi monarchy, so current percentages of speakers rest on estimates rather than fresh census data. Some compilations give Azerbaijani roughly 14% of speakers and Kurdish about 9%, but these figures should be read with their source and date in mind.\n\nEthnic groups\n\nCommonly cited estimates put Persians at about 61% of the population, followed by Azerbaijanis at about 16%, Kurds at about 10%, Lurs at about 6%, and Arabs, Baluch and other Turkic groups at about 2% each. These figures circulate widely, but they are approximations. Estimates for the Azerbaijani population range from at least 12 million in one source to as many as 20 million in others, while Kurdish shares appear in some compilations as a range of roughly 8% to 17%. The figures used in the Pahlavi era, which placed Persians at 51% and Azerbaijanis at 25%, were never independently verified but continue to be repeated.\n\nEthnic groups are concentrated in identifiable regions. Azerbaijanis live mainly in the northwest, in the provinces of East and West Azerbaijan, Ardabil and Zanjan. Kurds are found chiefly in the west and northwest, Baluch in the southeast, and Arabs largely in Khuzestan province in the southwest, where they form one of the two main groups in Ahvaz alongside Persians. Official discourse tends to stress social cohesion, presenting Lurs, Kurds, Azerbaijanis, Baluch and others as integral parts of a shared Iranian identity rather than as minorities. Some reports, however, describe Kurdish, Azerbaijani, Baluch and Arab communities as facing discrimination, and the two accounts are presented here side by side.\n\nReligion\n\nThe constitution defines Iran as an Islamic republic and designates Twelver Ja'fari Shia Islam as the official state religion. It also requires that other Islamic schools be accorded full respect and that their followers may act according to their own jurisprudence in religious rites. The constitution recognises Zoroastrian, Jewish and Christian Iranians as religious minorities.\n\nGovernment estimates put Muslims at 99.4% of the population, of whom 90 to 95% are Shia and 5 to 10% are Sunni. Most Sunnis are Kurds, Turkmen, Baluch and Arabs, living in the northwest, northeast, southeast and southwest respectively. Islam reached the Iranian plateau through the Arab conquest of the seventh century, and conversion took place gradually over several centuries. Sunni Islam was the dominant sect in Iran between the seventh and fifteenth centuries, and by the tenth century most Persians had become Muslims. The Shia character of the population developed later, a process discussed in the history sections of this entry.\n\nNon-Muslim communities are small but their size is disputed. The Baháʼí community is the largest non-Muslim group, with at least 300,000 members according to Human Rights Watch data cited by the US State Department, yet it is not recognised in the constitution and its members face restrictions. Estimates for Zoroastrians range from about 25,000 in government and statistical sources to 64,000 in the 2020 World Religion Database. Estimates for Jews range from about 9,000 according to the Tehran Jewish Committee to 20,000 according to a community member. Christians, Yarsanis and Mandaeans make up other small communities.\n\nLanguage, ethnicity and religion overlap in ways that matter politically. Azerbaijanis are mostly Shia and speak a Turkic language, while Kurds, Baluch and Turkmen are largely Sunni and live in border provinces. These overlaps shape how cross-border ties, regional identities and central-government policy are interpreted, and they explain why the census gaps and disputed estimates described above carry practical as well as academic weight."
    },
    {
      "heading": "Ancient Iran: from the Elamites to the Sasanians",
      "text": "Elam and the rise of the Medes\n\nThe first state-level societies on the western edge of the Iranian Plateau developed in Elam, whose main city was Susa on the Khuzestan plain. Susa, close to the Karun river, served as a administrative centre for centuries, and Elamite scribes used several scripts on clay tablets, much as their neighbours in Mesopotamia did. Elam and Mesopotamian city-states competed for control of trade routes and border lands, and their rivalry shaped the political history of the region for more than a thousand years. From the early first millennium BCE, Iranian-speaking peoples moved onto the plateau. The Medes, based in the northwest around Ecbatana (modern Hamadan), became the dominant power of the region. In 612 BCE, in alliance with Babylonia, they took Nineveh, the Assyrian capital.\n\nThe Achaemenid Empire\n\nCyrus II, a ruler from the Persian homeland of Fars, overthrew the Median king around 550 BCE and took over Median territory. Over the next decade he conquered Lydia in Anatolia and Babylon, and by 539 BCE his rule extended from Anatolia to the borders of India. His successor Cambyses II added Egypt in 525 BCE. Under Darius I (r. 522–486 BCE), the state was reorganised into provinces called satrapies, each supervised by a governor and linked to the central court by a system of tax collection and record-keeping. Darius also commissioned the trilingual Behistun inscription and a network of roads, the best known of which ran from Sardis in western Anatolia to Susa. Persepolis, begun under Darius around 518 BCE, was built as a ceremonial centre rather than a working capital. Its reliefs show delegations from across the empire bringing tribute, and it was one of the sites later inscribed on the UNESCO World Heritage List. The empire's rulers generally allowed conquered peoples to keep their local religions and laws, a policy reflected in the Cyrus Cylinder.\n\nAlexander and the Hellenistic and Parthian periods\n\nIn 331 BCE, Alexander the Great defeated Darius III at Gaugamela, and the following year Persepolis was burned, an event whose cause ancient sources describe differently. After Alexander's death in 323 BCE, his generals divided the empire. The Seleucid dynasty, whose Greek-speaking elite founded cities and spread Greek culture, held most of the Iranian lands for about a century. In the mid-third century BCE, the Arsacid dynasty, a Parthian family from the northeast, established its rule. Through the second century BCE, the Parthians took Media and Mesopotamia from the Seleucids. Parthian government was decentralised: local kings and noble families retained considerable autonomy and owed the Arsacid ruler loyalty and military service. Parthian forces repeatedly fought the Roman armies in the west, and in 53 BCE they defeated Crassus at Carrhae.\n\nThe Sasanian Empire (224–651)\n\nIn 224 CE, Ardashir I, a ruler from Persis, defeated the last Parthian king and founded the Sasanian dynasty, which took its name from a legendary ancestor, Sasan. The Sasanians built their capital at Ctesiphon on the Tigris and ruled a state that was more centralised than its predecessor. Middle Persian, written in the Pahlavi script, became the administrative and religious language. Zoroastrianism was closely tied to the state, and the priesthood, led by Kartir in the third century, gained wealth and influence, which the dynasty used to define orthodoxy and suppress rival movements. Shapur I captured the Roman emperor Valerian at Edessa in 260 CE, and the two empires fought for centuries over Armenia, Mesopotamia and the Levant. After a long war, the Byzantine emperor Heraclius counterattacked in the 620s and defeated Khosrow II, and a weakened Sasanian state then faced the Arab armies that conquered the region after the death of Yazdegerd III in 651."
    },
    {
      "heading": "Islamic conquest, Persianate culture and early modern Iran",
      "text": "The Sasanian Empire fell to Arab armies in the 630s and 640s, and its last ruler, Yazdegerd III, was killed in 651. Conquest did not produce rapid conversion. Zoroastrian, Christian and Jewish communities persisted for centuries, and Islamisation proceeded unevenly. It spread through Arab garrison towns, through the conversion of local notables who sought integration into the new order, and through the gradual adoption of Islamic law and religious practice. Converts also escaped the religious tax levied on non-Muslim subjects, which gave a practical incentive to change faith. Over several centuries, Islam became the majority religion, while Iranian administrative habits and social structures carried over into the new Abbasid Caliphate.\n\nThe Abbasid revolution of 747–750 drew heavily on support from Khurasan in the east, and Persian officials became central to the new state. The capital moved to Baghdad in 762, and Iranian secretaries, administrators and families such as the Barmakids held key posts at court. A literary current known as the Shuʻubiyya asserted the cultural merit of Persian traditions against Arab claims of superiority. Persian then revived as a written language. New Persian used the Arabic script and absorbed a large Arabic vocabulary, but it was the vernacular of courts and administration. The earliest substantial Persian poetry appeared in eastern Iran and Transoxiana under the Samanids (819–999), whose court at Bukhara became a centre of patronage. This made Persian a literary language in its own right, distinct from the Arabic of religious scholarship.\n\nUnder the Ghaznavids (977–1186), whose ruler Mahmud of Ghazni patronised poets at his court, the scholar and poet Ferdowsi completed the Shahnameh (c. 1010). This epic, which runs to roughly 50,000 couplets, recounts the legendary and historical kings of Iran from mythical times to the Arab conquest. It became the foundation of a shared Persian identity and remains a central text of epic poetry in the Persian-speaking world. Later Turkic and Mongol rulers absorbed Persian culture rather than replacing it. The Seljuks, who entered Baghdad in 1055, relied on Persian bureaucrats, and Persian became the court language of many Turkic dynasties. The Mongol invasions of 1219–1221 devastated cities across the plateau, and the Ilkhanate that followed, which sacked Baghdad in 1258, adopted Islam in the late thirteenth century. Its court supported major historical writing and artistic production, especially in Tabriz. The Timurids (1370–1507) made Herat a leading centre of Persianate learning, gardens and painting, and their workshops produced some of the most admired works of Persian miniature art.\n\nThe Safavid dynasty, established in 1501 by Ismail I, transformed the religious map of the region. Ismail proclaimed Twelver Shia Islam the state religion, and the new regime recruited Shia scholars from Arab lands and from within Iran to build its religious institutions. Shia identity became a marker of the state and a source of rivalry with the neighbouring Ottoman Empire, a conflict that included the battle of Chaldiran in 1514. Under Shah Abbas I (r. 1588–1629), the capital moved to Isfahan, where the king commissioned the great square of Naqsh-e Jahan, the royal mosque and palaces, and gardens and bazaars that still define the city. Safavid rule also fostered carpet weaving, book arts and architecture of a high standard, and it strengthened the Persian language as the medium of administration and high culture. Iran's modern borders and its religious identity largely took shape in this period."
    },
    {
      "heading": "Qajar and Pahlavi periods: modernization and oil (1789–1979)",
      "text": "The Qajar dynasty ruled from the late eighteenth century under mounting pressure from Russia in the north and Britain in the south. Russian victories in the wars of 1804–1813 and 1826–1828, sealed by the treaties of Gulistan and Turkmenchay, took the South Caucasus khanates, including Erevan, out of Iranian hands. Territorial losses of this kind made the court's dealings with foreign firms politically explosive.\n\nConcessions were the main flashpoint. In 1872 Naser al-Din Shah gave the British banker Paul Julius Reuter control over roads, telegraphs, mines and customs revenue. The Reuter concession was met with not only domestic outrage in the form of local protests, but also opposition from the Russian government. Under immense pressure, Naser al-Din Shah consequently canceled the agreement. A second Reuter arrangement then led to the creation of the Imperial Bank of Persia. In 1890 the shah granted a British subject a monopoly over the purchase, sale and export of tobacco for fifty years. Merchants and clerics organised a boycott, and a fatwa from Mirza Hasan Shirazi made the use of Talbot-company tobacco religiously unacceptable. In December 1891, the movement culminated in an amazingly successful national boycott on the sale and use of tobacco, observed even by the Shah's wives. The government responded with gunfire on crowds, which only widened the protest, and the concession was cancelled in 1892. The episode also left Iran in debt to Britain for about £500,000.\n\nThe boycott discredited the court and fed a broader demand for law. In April 1905 Tehran merchants took sanctuary at the Abd al-Azim shrine, and their demand shifted from a house of justice to an elected assembly, or majlis. Under bazaar strikes and mass protest, the shah signed the decree of 5 August 1906 convening a constituent assembly. The first Majlis opened in October 1906 and ratified a constitution that December. The 1907 Supplement further tried to restrict royal authority and define parliament's powers. The new order proved fragile: Mohammad Ali Shah tried to dismantle the constitution and attacked the parliament building, and a civil war between constitutionalists and royalist forces followed from 1906 to 1909. The movement was finally defeated in December 1911, when Russian intervention and internal divisions ended the Second Majlis.\n\nOil changed the balance of power. In 1901 Mozaffar al-Din Shah granted William Knox D'Arcy the first concession for oil exploration in Iran. After years of costly drilling, struck oil at 1,180 feet (360 m) shortly after on 26 May 1908 at Masjed Soleyman in Khuzestan, the first commercially significant oil find in the Middle East. The Anglo-Persian Oil Company was incorporated on 14 April 1909 as a subsidiary of Burmah Oil. Iran's share was small: the terms gave the government only about 16 per cent of net profits, and the lack of Iranian control over the industry became a lasting grievance. Pipelines completed in 1909–10 linked the oilfield with the refinery at Abadan, and the company was renamed the Anglo-Iranian Oil Company in 1935.\n\nReza Khan, a Cossack Brigade officer, took power in 1921 and in 1925 the Majlis replaced the Qajar dynasty with the Pahlavi dynasty under him as Reza Shah. His government centralised authority, built the Trans-Iranian Railway, expanded state schooling, and reduced the influence of the clergy on courts and education. Anglo-Soviet forces invaded in 1941 and forced his abdication in favour of his son, Mohammad Reza Shah.\n\nThe nationalisation crisis of the early 1950s followed. In March 1951 the Majlis voted to nationalise the oil industry, and Mohammad Mosaddegh became prime minister in April 1951. The company withdrew its staff, the Abadan crisis strained the economy, and Mosaddegh's government lost its foreign revenue. In August 1953 a coup removed him, with British and American involvement, and the shah returned to full power. The extent of foreign roles and their significance are still debated among historians.\n\nIn the 1960s the shah launched the White Revolution, a package announced after a January 1963 referendum. It included land reform that broke up large estates, the granting of voting rights to women, and a literacy corps. The programme's effects on rural society and its political costs were contested, and opposition from the clergy, led by Ruhollah Khomeini, grew sharply in 1963 and in the following years."
    },
    {
      "heading": "Islamic Revolution and the Islamic Republic (1979–present)",
      "text": "The upheaval of 1978–79 brought down the Pahlavi monarchy. Mass demonstrations against Mohammad Reza Shah spread through the cities, and the clergy, bazaar merchants, students and industrial workers became part of one broad coalition. In the wake of the 1979 revolution, the monarch lost his position as head of state, which in effect ended the country's long monarchical history. Ruhollah Khomeini, an exiled cleric who had been critical of the Shah since the 1960s, became the central figure of the new order. He first held the title of Leader of the Revolution and then, after the constitution took effect, Supreme Leader.\n\nThe 1979 constitution and the dual executive\n\nThe new state was given a formal framework by an elected Assembly of Experts. The assembly presented the constitution on October 24, 1979, and Supreme Leader Ruhollah Khomeini and Prime Minister Mehdi Bazargan approved it. A constitutional referendum confirmed it on December 2 and 3. The document made the Supreme Leader the head of state, with authority above the elected branches. The president and the prime minister were placed at the head of government. The 1979 constitution created a dual executive, in which the president nominated the prime minister but could not remove him. This arrangement produced long-running friction between the two offices, and the constitution's own provisions on the Leader's role, rooted in the doctrine of velayat-e faqih (guardianship of the jurist), gave the clerical leadership final say over major policy.\n\nThe 1989 revision\n\nThe constitution was revised in 1989, after Khomeini had concluded that the dual executive was not working. He established a Constitutional Review Council of roughly twenty members and dictated the specific areas to be revised, including the elimination of the Prime Minister's office. Khomeini died in June 1989, and the amendments were put to voters that summer. The revised Constitution was approved by a majority of more than 97 percent in a referendum held simultaneously with the presidential elections on 28 July 1989. The post of prime minister was abolished and all his functions transferred to the president. The revision also changed the judiciary: the supreme judicial council was replaced by a single chief justice, to be appointed by the leader for five years. The office of Supreme Leader thus became the most powerful institution in the system, and the presidency became a directly elected post under its authority. Later sections cover the succession of leaders after 1989, including the changes of 2026.\n\nThe Iran–Iraq War (1980–1988)\n\nIraq invaded Iran in September 1980, and the war lasted until a ceasefire in August 1988. The conflict shaped the Islamic Republic in lasting ways. It justified the expansion of the Revolutionary Guard Corps and the mobilisation of volunteer forces, including the Basij. It also imposed heavy costs on the economy, through oil export disruption, rationing, war damage and large military spending, and it strengthened the security apparatus. Many historians regard the war as a formative period that tied the political elite to the idea of national defence and to the regime's revolutionary identity.\n\nReformist and conservative cycles\n\nAfter 1989, Iranian politics has moved between periods of reformist and conservative dominance, most often expressed through presidential elections and the control of the Majlis. Reform-minded presidents sought greater civil liberties and economic openness, while conservatives, backed by the security organs and the judiciary, pushed back. The most significant rupture was the 2009 election. In 2009 Iranians took to the streets over allegations of electoral fraud as part of the Green Movement. In 2009, hundreds of thousands marched to protest a stolen election. Official results were upheld, and the government suppressed the protests. Iranian authorities rejected claims of fraud, while opposition supporters and many international observers disputed the official count.\n\nThe second major wave began in September 2022. The Guidance Patrol, the religious morality police, had arrested Amini for allegedly not wearing the hijab in accordance with government standards. Three days later, Amini died while in custody. Iranian officials deny reports that she was beaten by police and say she died of natural causes. The protests spread quickly. They spread to all of Iran's 31 provinces. The UN condemned the \"apparent unnecessary and disproportionate use of force\" against protesters by Iranian security forces. Casualty figures differ by source: at least 551 protesters including 68 minors killed according to Iran Human Rights as of 15 September 2023, while state media gave a figure of 200 as of 3 December 2022. By spring 2023, the protests had largely subsided. The government's account, the views of protesters and independent monitors are documented in different ways, and the figures should be attributed to their sources."
    },
    {
      "heading": "Government, institutions and security",
      "text": "The Supreme Leader and the 2026 succession\n\nIran's system rests on the doctrine of velayat-e faqih (guardianship of the jurist). Under it, the Supreme Leader holds final authority over the legislative, executive and judicial branches and commands the armed forces. The constitution requires the office-holder to be a male cleric with religious expertise, political competence, moral authority and loyalty to the Islamic Republic. The Assembly of Experts selects the leader. Ruhollah Khomeini held the post from its creation in 1979 until his death in 1989, and Ali Khamenei succeeded him.\n\nAli Khamenei was killed on 28 February 2026 in a joint US–Israeli airstrike during the war. The Assembly of Experts had reportedly been meeting to choose a successor, and its buildings in Qom and Tehran had been struck, so the process moved to virtual sessions. Iranian state media announced on 8 March 2026 that the Assembly had named Mojtaba Khamenei, the late leader's son and a mid-ranking cleric, as the third Supreme Leader. Earlier reports from Iran International, citing informed sources, had already described the choice. Analysts and reporting by The New York Times, as summarised by other outlets, describe heavy pressure from the Islamic Revolutionary Guard Corps (IRGC) on the Assembly's members. Critics argue that a father-to-son transfer conflicts with the 1979 revolution's rejection of hereditary rule. The official line presents the vote as a legitimate constitutional decision. Neither account can be independently verified in full.\n\nElected and appointed bodies\n\nThe Assembly of Experts has 88 seats, and its members serve eight-year terms. Some older sources give 86 seats. The Assembly is the only body that can select and oversee the Supreme Leader, though its oversight has rarely been visible in practice. The Guardian Council has twelve members. The Supreme Leader appoints six of them, and the head of the judiciary nominates the other six, who require parliamentary approval. The Council reviews whether laws passed by the Islamic Consultative Assembly (Majlis) comply with the constitution and Islamic law, and it can veto them. It also qualifies candidates for the presidency, parliament and the Assembly of Experts.\n\nThe Expediency Discernment Council was created in 1988 to settle deadlocks between the Majlis and the Guardian Council. Over time it became an advisory body to the Supreme Leader on domestic and foreign policy. Its members are appointed by the leader, and it has consisted of 27 members since 2007. The president is directly elected for four years and may serve no more than two consecutive terms. Masoud Pezeshkian has held the office since July 2024, after a snap election that followed the death of Ebrahim Raisi. The judiciary is headed by a chief justice appointed by the Supreme Leader.\n\nMilitary and security forces\n\nIran maintains two parallel armed structures. The regular armed forces, known as the Artesh, have a conventional national-defence role. The IRGC was formed after the 1979 revolution to protect the new order. It operates its own ground, naval and aerospace forces, alongside the Basij, a volunteer paramilitary network. The Quds Force, an IRGC unit, conducts external operations and supports allied groups in the region. The Supreme Leader is the commander-in-chief of both structures. Because the IRGC has a large economic and political footprint, analysts often treat it as a power centre in its own right, a point the 2026 succession has brought into sharper focus.\n\nVetting, elections and contested outcomes\n\nCandidates for the presidency, the Majlis and the Assembly of Experts must pass Guardian Council vetting. In the 2017 presidential round, more than 1,630 people applied and the Council approved six. In 2024, the Council approved only six of more than 80 registrants. Former parliament speaker Ali Larijani and former president Mahmoud Ahmadinejad were among those barred. Larijani described the Council's mechanism as \"non-transparent\". The Council has generally cited legal criteria, such as religious qualifications for Assembly of Experts candidates, or insufficient evidence for a candidate's eligibility. Critics, including Human Rights Watch, have argued that decisions rely on candidates' political views. Some advocacy groups report that the Council disqualified 585 candidates in the 2021 presidential race, leaving seven on the ballot. Those figures come from an advocacy source and should be checked against official records. Disputes over disqualifications, low turnout and the transparency of counting recur after most national votes, and reports on contested results differ according to whether they come from official or independent sources."
    },
    {
      "heading": "Economy, sanctions and public finance",
      "text": "Iran has a mixed economy. Large state-owned enterprises are prominent in energy, heavy industry and banking, and semi-public foundations (bonyads) hold substantial commercial assets with considerable independence from the state budget. The private sector is concentrated mainly in trade and services, where it works under heavy regulation and the pressures created by sanctions.\n\nOil and gas supply most export earnings and a large share of government revenue, so public finances track the volume of crude that can be sold and the price it fetches. Agriculture and petrochemicals are other key sectors. Output estimates are unusually far apart. One compilation puts 2026 nominal GDP at roughly $225 billion, while another gives about $300.29 billion. PPP estimates are also wide, from about $1.78 trillion to a figure of around $2.18 trillion attributed to the IMF. Forecasts for real growth have moved sharply too: the IMF's estimate of a 6.1% contraction in 2026 was later replaced in its July update by a projected decline of 5.4%. Even the recent past is disputed, with one series showing GDP growth of −0.3% in 2025 and another reporting a 2.7% contraction in the fiscal year ending March 2026.\n\nInflation is the most visible pressure. Consumer prices already exceeded 50% in 2025. An IMF projection from April 2025 had expected 42.5% for 2026; the IMF now projects 68.9% for 2026. Official Iranian series also diverge. The Statistical Centre of Iran recorded a year-on-year rise of 88.6% for the period 22 May–21 June 2026, while the Central Bank of Iran gave 83.1% for the same period. Food prices rose faster still, with food inflation accelerating to 105% by February. The exchange rate has followed the same path. The rial lost 60% of its value in the months after the 12-day war against the U.S. in 2025, and it later hit an all-time low of 2,020,000 rials to one US dollar on 24 August 2026. A Reuters-sourced report from early October put the free-market rate at approximately 2.688 million rials to the dollar.\n\nUS economic pressure has been formalised as a maximum-pressure campaign. The presidential memorandum of 4 February 2025 set the goal of reducing Iran's oil exports to zero. Treasury has since sanctioned more than 180 vessels carrying Iranian petroleum products. Iran has also relied on transfers between tankers at sea to get around these restrictions; the number of such transfers reached 679 in 2025, up from 471 in 2024. Before the conflict, exports were running at about 1.51 million barrels per day in January 2026. After fighting began on 28 February 2026 and a US naval blockade followed in April, one analysis reports that exports fell by 94%, to roughly 100,000 barrels per day. A later Treasury action sanctioned 17 additional vessels tied to the shadow fleet. Sanctions on petroleum and natural gas shipping therefore remain central to the state's revenue position.\n\nAnalysts attribute the persistent weakness to several overlapping causes. These include weak economic management, persistent fiscal and monetary imbalances, the continued impact of international sanctions, subdued growth prospects and widening fiscal deficits. The World Bank describes how decades of economic mismanagement and chronic underinvestment had already eroded living standards before the 2026 conflict. Labour-market indicators are weak as well: youth unemployment stood at 21.9% in 2025, and a Majlis Research Center figure from 2019 put 55% of the population below the national poverty line. Senior officials have warned that it may take more than a decade to rebuild the war-shattered economy."
    },
    {
      "heading": "Energy, natural resources and infrastructure",
      "text": "Oil and gas\n\nGas rather than oil defines the country's hydrocarbon base. Iran holds an estimated 1,200 trillion cubic feet (34 trillion cubic metres), which accounts for 16 percent of global reserves and 45 percent of OPEC's total. Oil is also significant. Using January 2015 data from the Oil & Gas Journal, Iran had about 158 billion barrels of proved crude oil reserves, close to 10 percent of the world total, and most of these reserves were discovered decades ago. Iran has been an OPEC member since its founding in 1960. State control is central: the state-owned National Iranian Oil Company is responsible for all upstream oil and natural gas projects.\n\nThe shared South Pars field is the core of gas production. South Pars is the largest natural gas field in the world, straddling the maritime border between Iran and Qatar in the Persian Gulf. Known as South Pars on the Iranian side but North Dome in Qatari waters. The Iranian block covers about 3,700 square kilometres and is estimated to hold 14.2 trillion cubic metres of gas reserves in place plus 18 billion barrels of gas condensate. Development is organised into 24 phases. Qatar began producing from the reservoir earlier: Qatar has been extracting gas from South Pars since 1990, a decade ahead of Iran.\n\nOutput is constrained by sanctions and technology. Sanctions and technical constraints have meant most gas Tehran produces from the South Pars field is for domestic use in Iran. Forum data for 2023 show total natural gas production of 266.25 billion cubic meters, with domestic consumption accounting for 255.5 bcm. About 15.8 bcm of natural gas were exported. Production figures are disputed. Official statistics claim processed output of 657 million cubic metres per day from all fields, while a company report obtained by Iran International indicates that Iran extracted approximately 590 mcm/d of raw gases from South Pars during the first half of 2023, of which only 510 mcm/d of natural gas (methane) were injected into the network after processing.\n\nElectricity\n\nGas also dominates power generation. Natural gas is the primary source of electricity, at 86% as of 2023, with oil contributing around 7%. Over 90% of Iran's electricity is generated by thermal power plants that operate on gas, mazut and diesel. Those plants are a heavy draw on supply: thermal power plants, which produce about 93.5 percent of the nation's electricity, consume over 70 billion cubic meters of natural gas annually.\n\nDemand regularly outruns supply. The country faces a troubling 14,000–15,000 MW electricity deficit during peak summer demand, exacerbated by frequent power outages that disrupt both industrial and residential life. Much of the fleet is old, as significant portions of steam and gas plants exceed 30 years in age. Analysts link underinvestment to the economic sanctions on Iran and government restrictions. In 2025 the shortages reached households and public institutions: government offices, banks, and schools have been forced to shut down as authorities struggle to meet rising electricity demand. Losses are also large. One commentary argues that due to aging and inefficient infrastructure, Iran loses during production and transmission 40% of the total household electricity and gas consumption in Iran.\n\nRenewables remain marginal, though sources disagree on the figures. Energy Ministry data cited by one outlet put them at around 1.9% of the country's daily electricity generation of 80,000 MW, while Stimson counts an operating capacity of only 879 MW. The resource base is considerable: with an estimated 300 days of sunlight per year and the potential to produce up to 12,000 MW of solar energy. Official targets have been ambitious, from a plan to produce 20,000 MW of renewable electricity by 2027 and 50,000 MW by 2031, to a government plan to build 30 GW of solar energy in plants during its remaining three years of administration. Construction has lagged: In 2023, Iran built less than 75 MW of renewable power, while Saudi Arabia and Turkey added 2,840 MW and 2,800 MW, respectively. Hydropower is also vulnerable, as production of more than 12.50 GW of hydroelectric power plants has been affected by drought and insufficient rainfall.\n\nBushehr nuclear power plant\n\nThe Bushehr plant on the Persian Gulf coast is Iran's only operating nuclear power station. Construction of the plant was started in 1975 by German companies, but the work was stopped in 1979 after the Islamic revolution of Iran. Russia later completed it. It was first connected to Iran's electricity grid in September 2011 before entering commercial operation in September 2013. Reported capacity varies: according to the International Atomic Energy Agency's Power Reactor Information System, Bushehr-1 has a net electrical capacity of about 915 megawatts, while another report says Bushehr Unit 1 currently provides about 1,000MW to the national grid. A second unit, once anticipated to begin operation in 2024, is now expected by 2029 according to recent reporting. Fuel supply is tied to Moscow: Iran is required to return spent fuel rods from Bushehr to Russia as soon as they are safe for transport.\n\nThe plant has been struck during the 2026 war. The facility was hit by a US-Israeli airstrike, killing a security guard, Iranian state media reported. It had already been targeted four times since the start of the war on February 28. Iran's regulator filed IAEA event reports on projectiles striking inside the plant's premises on March 17, March 24 and March 27, as well as another impact near the fence surrounding the reactor's first unit on April 4. Because the operating Bushehr reactor contains nuclear fuel and radioactive materials associated with power generation, making any damage to its cooling, power supply or containment systems significantly more sensitive.\n\nTransport and other energy infrastructure\n\nIran's energy assets are concentrated on the Gulf coast. Iran's gas facilities are concentrated primarily in the south, especially along the Gulf, with major gasfields and processing plants. Attacks have also reached offshore gas infrastructure: a reported strike struck four units of Phase 14 of South Pars, around 200 kilometres from Qatar's gas installations. The transport network, including the Tehran metro, the rail and road system, Imam Khomeini International Airport, and the ports of Bandar Abbas and Chabahar, is described in more detail elsewhere in this entry."
    },
    {
      "heading": "Culture, arts and literature",
      "text": "Persian literature is the most visible strand of Iranian cultural life and remains part of everyday speech and social custom. After the Arab conquest, Persian was revived as a literary language written in the Arabic script, and the epic Shahnameh of Ferdowsi became its foundational work. Later lyric poets gave the language much of its canonical repertoire. Hafez's ghazals are still widely memorised and recited, and many Iranians consult his verses in a divinatory practice known as fal-e Hafez. Saadi's moral and narrative works are read in schools and quoted in proverbs, and Rumi, though he lived in Anatolia, wrote his major mystical poetry in Persian. Verses are recited at weddings, New Year gatherings and visits to tombs, and the poets' tombs in Shiraz and elsewhere remain active sites of pilgrimage and picnicking. Poetry thus works less as a museum subject than as a shared vocabulary for love, grief and political irony.\n\nThe Persian garden is among the country's most influential contributions to architecture. Its roots lie in the Achaemenid period: Pasargadae, founded by Cyrus the Great in the 6th century BC as the first dynastic capital of the empire, combined palaces, halls and a tomb with a walled garden whose channels and four-sectioned layout became a model. Later gardens in Shiraz, Isfahan, Kashan, Mahan, Yazd and Birjand followed the same principles of geometric order, shade trees, pools and water channels, which were fed by the hydraulic systems discussed elsewhere in this entry. In 2011 UNESCO inscribed nine gardens as a single serial property titled \"The Persian Garden\", and Pasargadae had already been inscribed in 2004. Urban and architectural heritage is represented by the Naqsh-e Jahan Square and the Masjed-e Jameh in Isfahan, which were inscribed in 1979 and 2012 respectively, and by the Historic City of Yazd, inscribed in 2017. In Yazd, adobe houses, courtyards and windcatchers show how buildings were adapted to a desert climate; the windcatcher of the Dowlatabad garden is described as the tallest adobe windcatcher in the world.\n\nVisual arts and crafts are closely tied to the same literary and garden traditions. Miniature painting developed mainly as illustration of manuscripts, especially copies of the Shahnameh and lyric collections, and its compositions often present courtly scenes set in idealised gardens. Persian carpets, knotted by hand in workshops in cities such as Kashan, Isfahan, Tabriz and Kerman, frequently reproduce garden plans, medallions and floral vines, so that a carpet can function as a portable garden. Calligraphy holds a higher status than in many other traditions. The nastaliq script, used for Persian poetry and manuscripts, appears on tile panels, architectural inscriptions and bookbindings, and calligraphic practice remains a recognised art form in its own right.\n\nCinema and performing arts have gained international recognition since the 1960s. Iranian directors such as Abbas Kiarostami and Asghar Farhadi have won major festival prizes, and Farhadi received Academy Awards for the features A Separation and The Salesman. Film production operates under licensing and content review by the Ministry of Culture and Islamic Guidance, a system that critics and filmmakers have debated, and the implications of that system are covered in the human rights section. Classical music is organised around the radif, an ordered repertoire of melodic units called gushe grouped into modal systems known as dastgah and avaz. The formal codification of the radif is usually associated with the 19th-century musician Mirza Abdollah, and performers learn it from masters and use it as a framework for improvisation on instruments such as the tar, setar, santur and ney. Nowruz, the spring festival held at the March equinox, is the most widely shared cultural event. UNESCO inscribed it on its Representative List of the Intangible Cultural Heritage of Humanity in 2009, and the United Nations General Assembly later designated 21 March as the International Day of Nowruz. Its customs, including the Haft-sin table and family visits, are observed across Iran and many neighbouring regions."
    },
    {
      "heading": "Science, education and technology",
      "text": "Literacy and higher education\n\nIran's modern education system expanded rapidly after the 1980s. National census data show the gap between men and women narrowing: in 1966 about 17% of women aged six and over were literate, and by the 2006 census the female rate had reached 80.3%, against 88.7% for men. Later international estimates place adult literacy near 89% in 2023, with youth literacy (ages 15 to 24) close to 99%, so the gender gap is now much smaller among young people than among older adults. Figures differ by source: UNESCO's projections for the adult female population differ from the youth series, and some advocacy and think-tank publications give higher or lower rates for the same years.\n\nHigher education grew in parallel. Estimates of gross tertiary enrolment vary, but most recent figures cluster around 58–59% for the early 2020s. Women now make up a majority of entrants to some university fields, and reports from the mid-2020s indicate that women account for more than half of first-year university students. The country's main research universities are concentrated in Tehran, Isfahan, Shiraz and Mashhad. Sharif University of Technology in Tehran is among the most prominent institutions in engineering and the sciences, and it was the undergraduate university of Maryam Mirzakhani. Public figures on the number of institutions also vary by year; a 2016 estimate cited around 46 universities alongside dozens of technical institutes and colleges.\n\nScientific heritage and recent achievements\n\nIranian scholars made lasting contributions to medicine, astronomy and mathematics long before the modern period. Avicenna (Ibn Sina, c. 980–1037) wrote the Canon of Medicine, which remained a standard medical text in Europe and the Islamic world for centuries. Al-Biruni (973–1048) worked on astronomy, geodesy and the measurement of the Earth, and he left detailed studies of Indian society and science. Omar Khayyam (1048–1131) contributed to the classification of cubic equations and to the reform of the calendar in the 11th century. These figures are often presented as part of the wider Persianate scientific tradition of the Islamic golden age, and historians note that many of their works were written in Arabic rather than Persian.\n\nIn modern times, the most widely recognised achievement is that of Maryam Mirzakhani. Born and raised in Tehran, she took her first degree at Sharif University of Technology in 1999 and completed her doctorate at Harvard in 2004. She became a professor at Stanford University in 2008. In August 2014, at the International Congress of Mathematicians in Seoul, she received the Fields Medal for her work on Riemann surfaces and their moduli spaces. She was the first woman to win the prize, which is awarded every four years to mathematicians aged 40 or younger. Her research is theoretical, but it has connections to quantum field theory and, in more distant applications, to cryptography and the study of prime numbers. She died of breast cancer in July 2017, aged 40.\n\nRestrictions on internet access and academic exchange\n\nSince early 2026, Iran has experienced repeated internet shutdowns, which culminated in a near-total nationwide blackout during the armed conflict that year. One report from April 2026 described the blackout as having lasted more than 1,176 hours, and in the same month the Ministry of Science announced limited international access for university professors, with other researchers to be added later. Iranian authorities have described the shutdowns as either technical problems or security measures; Human Rights Watch has argued that they are disproportionate and restrict access to information. Students in Tehran have reported that email, university portals and research databases have been unreliable or blocked, which has made online teaching impractical. Dozens of universities were also reported to have been physically damaged during the conflict.\n\nThese restrictions have affected research output and international standing. Iran was omitted from the 2026 Times Higher Education Impact Rankings, which the Minister of Science attributed to underinvestment, weakened international partnerships, and limited sabbatical opportunities. A deputy director at the Ministry of Health estimated that internet disruptions had sidelined researchers for roughly a third of the academic year and could reduce scientific publications by nearly 10,000; this is an official estimate rather than an independent measurement. Separately, reports from March to June 2026 describe summonses, suspensions and expulsions of students for online activity and expression, with official and student accounts differing in scale and motive. On 26 August 2026, the United States indefinitely suspended general licences that had allowed most academic exchanges, joint programmes and conference participation involving people in Iran, though students and scholars already in the United States on valid visas were not covered."
    },
    {
      "heading": "Foreign relations, regional role and the nuclear issue",
      "text": "Regional posture and partnerships\n\nIran's regional role has long rested on ties with state and non-state actors in Lebanon, Iraq, Yemen and Syria, and governments describe that support in very different terms. A Middle East Policy Council commentary links Tehran's 2025 agreement with Moscow to the weakening of its proxy network, which pushed Iran to seek new security partners. The agreement comes as Iran looks for new security partners following the degradation of its proxy network.\n\nThe ties with Russia are the most formal. Presidents Putin and Pezeshkian signed a Comprehensive Strategic Partnership Treaty in January 2025, and the Iranian Ministry of Foreign Affairs announced that the treaty is legally binding as of October 2, 2025. The agreement runs for twenty years and can be extended by five more. It stops short of a mutual defense clause, but commits both countries to joint action against shared military threats, enhanced military-technical collaboration, and joint exercises. Iran also belongs to the Shanghai Cooperation Organisation and to BRICS, which gives it multilateral platforms alongside Russia and China.\n\nThe JCPOA and the path to snapback\n\nThe 2015 nuclear agreement, known as the JCPOA, was endorsed by UN Security Council Resolution 2231. That resolution immediately lifted sanctions and designations tied to some nuclear activities and removed or modified restrictions, such as the prohibition on enrichment, needed to implement the deal. Russian and Chinese representatives at the Security Council stress that Washington unilaterally withdrew from the JCPOA in 2018, and they argue that the European signatories therefore lost the right to invoke snapback.\n\nSnapback is the mechanism written into the deal that lets a participant restore earlier UN sanctions. France, Germany, and the United Kingdom invoked the snapback mechanism on August 28, 2025, resulting in the sanctions' reimposition on September 27, 2025. The restored measures include an arms embargo and a ban on technology for ballistic missiles, and they freeze Iranian assets abroad. The European ministers cited repeated breaches of JCPOA commitments, while Araghchi also sent a letter to the UN Security Council calling the invocation of the snapback by the three nations \"simply a stark abuse of process\", according to IRNA. Snapback also kept the Iranian nuclear file on the Security Council's agenda. Under the reimposed regime, the JCPOA effectively is no longer in force, and snapback indefinitely extended both the sanctions and Iran's nuclear program as a subject of Security Council consideration.\n\nNuclear programme and IAEA verification\n\nIran remains a party to the Nuclear Non-Proliferation Treaty, but verification has largely broken down. In its latest safeguards report, the IAEA continues to declare Iran in violation of its Nuclear Non-Proliferation Treaty (NPT) safeguards agreement. Access to the enrichment sites was lost after the June 2025 war: since Israel launched a 12-day war on Iran in 2025, the IAEA has been blocked by Tehran from visiting enrichment sites. After the strikes of 28 February 2026, the IAEA stopped conducting most verification activities in Iran, and the agency reported that it had lost continuity of knowledge over declared nuclear material.\n\nThe central uncertainty concerns the stockpile. The IAEA's estimate for uranium enriched up to 60 percent before the June 2025 attacks is 440.9 kilograms, but it remains unclear how much of the stockpile remains and where it is located. Both Iran and the IAEA say enrichment has not resumed, while nonproliferation experts worry the Islamic Republic may be moving its stockpile. On 10 June 2026, the IAEA Board of Governors adopted a resolution requiring Iran to provide full inventory information and access, without making a new formal finding of noncompliance. The Security Council resolutions set a demand that Iran suspend all enrichment-related and reprocessing activities, including research and development, to be verified by the IAEA.\n\nDiplomacy and open questions\n\nDiplomacy has run through intermediaries and formal instruments rather than a single direct channel. A June 2026 memorandum of understanding set out a framework in which the two sides would negotiate a deal covering nuclear issues and sanctions within a fixed period that can be extended by mutual consent. The MOU is silent on the future of IAEA safeguards in Iran. Enrichment rights, verification of the stockpile and the Strait of Hormuz therefore remain unresolved, and the Strait is treated in the section on the 2026 war."
    },
    {
      "heading": "The 2026 war and its aftermath",
      "text": "The current conflict began on 28 February 2026, when the United States and Israel launched coordinated strikes on Iran. The US side called its operation Operation Epic Fury. The 2026 Iran war began on that first day, and Supreme Leader Ali Khamenei, aged 86 and in power since 1989, was killed in Tehran. The Iranian government confirmed his death on 1 March and declared 40 days of national mourning. Iranian state television reported more than 200 deaths across Iran on the first day, without saying how many were civilians. Iran responded with missile and drone attacks on US military bases, Israel and targets elsewhere in the region. These attacks damaged air hubs and disrupted oil shipments.\n\nUnder the constitution, an Interim Leadership Council takes over when the post of Supreme Leader is vacant, and it was set up the day after Khamenei's death. The Assembly of Experts, an 88-member body of clerics, then chose a successor. Its session ran from 3 to 8 March, and Mojtaba Khamenei, a mid-ranking cleric born in 1969 with close ties to the Islamic Revolutionary Guard Corps (IRGC), was named as the third Supreme Leader since 1979. Some outlets reported the vote on 8 March, while the formal announcement came on 9 March. Iranian and foreign reports said the IRGC pressed strongly for his selection, and the Foreign Minister, Abbas Araghchi, publicly denied on the day of the announcement that a choice had been made. One analyst quoted by Asharq Al-Awsat argued that Mojtaba Khamenei did not inherit his father's personal and political networks, and that the IRGC now holds considerable influence over him. This is an analytical view, not an established finding.\n\nThe Strait of Hormuz, the narrow waterway through which much of the Gulf's oil and gas is exported, became effectively closed to shipping in the early weeks of the war. A ceasefire followed, and on 13 April 2026 the United States imposed a naval blockade on Iranian ports after the Islamabad Talks failed. A memorandum of understanding between Iran and the US, signed on 17 June, briefly eased the conflict and provided for toll-free passage for 60 days, but it broke down afterwards. Since early May, US Central Command has said it has helped commercial vessels move more than 900 million barrels of crude through the strait, while it also enforces the blockade and has redirected more than 100 ships. Iran, for its part, insists that the strait will stay closed until the US meets its conditions. Separately, the Houthis declared a blockade on Saudi ships in the Bab el-Mandeb Strait, which extended the regional spread of the conflict.\n\nReports in August 2026 described mediators as saying that Iran and Oman were close to an agreement to partially reopen shipping through the strait. The Iranian parliament reviewed the arrangement, and a US official disputed Tehran's account of its terms, saying that any temporary routes should carry no tolls or permission requirements. In late September, Iran presented a seven-day plan at the United Nations General Assembly in New York. Under this plan, the US would lift the naval blockade, grant sanctions waivers on oil sales, agree to a ceasefire covering regional fighting including in Lebanon, and release frozen Iranian assets, after which the strait would reopen and talks on a final agreement would follow. US President Donald Trump rejected the proposal as \"unacceptable\" on 26 September. In early October, Iran's top negotiator and parliament speaker said the strait would stay closed until the US met seven conditions based on the Islamabad memorandum. Araghchi said messages were still being exchanged through intermediaries, and Trump said negotiations were progressing while insisting that Iran's nuclear programme must be addressed. Iranian officials also warned of new surprises on the battlefield.\n\nAs of 9 October 2026, the situation is unresolved. Mediated talks are continuing, but the sequence of steps is disputed, the US blockade remains in place, and public statements from Tehran and Washington point in different directions, including on the possible resumption of strikes. The long-term consequences for Iran's economy, leadership and regional security are not yet clear, and the casualty and damage figures reported in the early weeks come from differing sources that have not been independently reconciled."
    },
    {
      "heading": "Human rights and social conditions",
      "text": "Legal framework: dress rules, expression and the penal code\n\nIran's legal system is based on Islamic criminal law, and mandatory veiling is the most publicly contested part of it. Sources note that the penal code contains no legal definition of an \"improper\" hijab, which leaves its interpretation to the authorities (UN 2024-03-19, para. 338; Maranlou 2022-10-07). A UN fact-finding report also records that the legal obligation starts at age nine, while in practice girls are veiled when they start school at around seven (Amnesty International 2022-12-06; UN 2024-03-19, para. 339).\n\nA stricter law was the subject of further disputes. The government of Ebrahim Raisi proposed a bill on the protection of the family through promoting the culture of hijab and chastity in September 2023, and the Guardian Council approved it in September 2024 (the bill was proposed in 2023 and approved in 2024). Critics argue that the law treats improper veiling as a form of nudity and raises the prison term to up to ten years (OHCHR, Citation 2023). The UN human rights office reported that the law's entry into force, initially expected in December 2024, was temporarily suspended so that \"necessary revisions\" could be made, as the government confirmed to the OHCHR (the Government confirmed the suspension in response to the present report). The government's rationale, according to one academic analysis, is the protection of national security (the Iranian Penal Code is used to punish any public breaches). The OHCHR also observed that morality policing had generally declined under the new government, while reports of harassment for non-compliance continued (morality policing has generally decreased since the new Government came to power; there are still reports of harassment of women).\n\nRestrictions on expression extend beyond dress. The UN fact-finding mission on Iran reported that since April 2024 the authorities have expanded criminal prosecution of women who defy the hijab rule through a campaign it calls the \"Noor plan\" (Since April 2024, the State has increased criminal prosecution against women who defy the mandatory hijab). In December 2024 a singer and two band members were arrested after a virtual concert performed without a headscarf, and were released the next day but charged (On 14 December 2024, Iranian singer Parastoo Ahmadi and two of her band members... were arrested). The OHCHR report also notes that the hijab-related legal framework criminalises sending related images to foreign governments or media (The law also criminalizes sending hijab-related photos, videos or audio to foreign Governments, networks, media outlets, groups or organizations).\n\nProtests: 2009, 2022 and 2026\n\nMass protests in 2009, after the disputed presidential election, and in 2022, after the death in custody of Mahsa Amini, were followed by repeated crackdowns and prosecutions. The protests that began in late 2025 developed into a larger confrontation. Their status, as recorded by one compiled overview, was that security forces suppressed them violently, a nationwide internet and mobile shutdown was imposed, and the authorities announced that the unrest had ended (Protests violently suppressed by security forces; Nationwide internet and mobile network shutdown). Independent organisations give a much higher death toll than official statements. The Center for Human Rights in Iran (CHRI) states that the grievances behind the January 2026 protests remain unresolved and that public anger over the killing of thousands has not disappeared (the anger generated by the regime's killing of thousands of people during those protests has not disappeared). A list of students killed was published by a teachers' trade association council, which is not a state body, and its verification is described as its own (the Coordination Council of Iranian Teachers' Trade Associations published the names of 32 students who were killed).\n\nStudent activism in 2026 has been a recurring issue. Demonstrations spread across universities on 21 February 2026, the first day of in-person classes after the January protests (Demonstrations erupted across multiple universities on February 21, 2026). The state news agency reported that students had protested at five universities in Tehran and one in Mashhad that day (Iran's state news agency said students protested at five universities in the capital, Tehran, and one in the city of Mashhad on Sunday). In June 2026, rallies in several cities protested changes to the university entrance exam and grading rules. An opposition-linked group described them as the start of a wider uprising (widespread protests erupted across 23 Iranian cities as students took to the streets to demand justice and equality in the educational system), while the reporting from a diaspora outlet quotes the Education Minister as dismissing the grievances and saying final exams must be held in person (Education Minister Kazemi dismissed the students' grievances). The state-run newspaper Shargh reported a wave of disciplinary actions at major universities in the same period (the state-run Shargh newspaper reported an escalating wave of disciplinary actions at major universities). CHRI characterises the subsequent campus measures as a systematic crackdown involving arrests, expulsions and suspensions (subjecting students to arbitrary arrests, imprisonment, expulsions, suspensions, and politically motivated disciplinary proceedings). On 28 September 2026, students at Allameh Tabatabai University in Tehran rallied against the hijab law and called for the release of imprisoned classmates, according to RFE/RL's Radio Farda (Students at Allameh Tabatabai University in Tehran rallied on September 28 against the country's hijab law).\n\nUse of the death penalty\n\nFigures for executions differ by monitoring organisation, methodology and period. Iran Human Rights (IHRNGO) and ECPM recorded at least 1,639 executions in 2025, a rise of about 68% on the 975 recorded in 2024 (At least 1,639 people were executed, marking a dramatic 68% increase compared to the 975 executions recorded in 2024). Only a small share of these were officially announced: 113, under 7% (Only 113 executions (under 7%) were officially announced). HRANA, using a different period from October 2024 to October 2025, counted at least 1,537 executions (at least 1537 individuals were executed by hanging in Iran). A third organisation, Iran HRM, gives a figure of at least 2,167 for 2025 (at least 2167 people were executed in Iran). Each organisation's figures should be read against its own method, and the official figures are a much smaller part of the total than the independent counts.\n\nIHRNGO also records executions linked to protests in 2025, and reports that at least six child offenders were executed in the year (at least six child offenders were executed during the year). Iran's authorities have described a case involving six men accused of links to Israel and attacks in Khuzestan; the Hengaw Organization for Human Rights says they were Arab political prisoners arrested in 2019, and that they were tortured into televised confessions (Iran said the six men linked to Israel killed police officers and security forces; A Kurdish group called the Hengaw Organization for Human Rights said the six were actually Arab political prisoners; The group insisted the men were tortured)."
    },
    {
      "heading": "Data gaps, disputed figures and open questions",
      "text": "Basic statistics about Iran vary by source and date, and the differences are large enough to change comparisons. For population, the UN World Population Prospects 2024 revision underlies several statistical sites' projection of about 93.17 million for mid-2026 (93.17 million, up from 92.42 million in mid-2025). Other compilations still report a figure near 87 million, which reflects older base data and different projection methods (87,021,053 for 2026). The urban share shows a similar spread. One table gives 77.7% urban for 2026, while another gives 73.5% urban. Each figure in this entry should therefore carry its source and year, and demographic and urbanisation comparisons should use one source series throughout.\n\nCasualty figures from the 2026 war are among the least settled numbers. Iran's Ministry of Health reported at least 3,468 people killed in US-Israeli attacks on Iran since February 28, while the US-based Human Rights Activists News Agency reported 3,636 Iranians killed by April. A compiled table gives different numbers again, including an Israel Defense Forces estimate of 6,000 and an official Iranian figure of 3,528 (table of casualties by country, marked as not finalised or verified). For civilian deaths, one analysis gives a range of 1,030 to 2,362 and notes that the true figure is hard to establish because of an internet blackout, limited journalist access and the difficulty of identifying bodies. The same kind of uncertainty applies to the earlier crackdown on protests in January 2026, where estimates of total deaths range from 6,488 to upwards of 36,500. Because the spread is this wide, any single casualty figure needs its source, its date and its counting method stated.\n\nThe status of Iran's nuclear material is also unverified. Before the June 2025 strikes, the IAEA estimated that Iran held 440.9 kg of uranium enriched to up to 60%, an amount that the agency's own yardstick links to ten weapons if enriched further (enough for 10 nuclear weapons, according to an IAEA yardstick). The IAEA has since said it cannot provide any information on the current size, composition or whereabouts of the stockpile of enriched uranium in Iran. Its most recent routine inspections took place before the 2025 war, so its judgement that the material is still in place rests on inference rather than direct checking (a \"reasonable impression\" that the material is there, based on inspection work completed before the 12-day war). The agency's director general has said that a bit more than 200 kg of material enriched to up to 60% likely remains in the Isfahan tunnel complex, with some also at Natanz (a bit more than 200 kg of uranium enriched to up to 60% remains in the tunnel complex at Isfahan, with some also still at Natanz). Independent analysts have raised the possibility that much of the material was moved before the strikes, which would change where it may be found (Iran may have transferred a large portion, potentially all, of its 60% stockpile to Isfahan on June 9). Iranian officials, for their part, have rejected handing over the stockpile, and Tehran maintains that its programme is peaceful and that enrichment is a right under the NPT (ruling out any handover of the stockpile). The gap in verified information therefore remains, and each side's account is presented without endorsement.\n\nSeveral larger questions cannot yet be answered. The long-term effects of the 2026 war on the economy, the leadership structure and regional security will depend on developments that have not finished unfolding, and early estimates of damage to infrastructure, industry and housing vary by source. Gross domestic product is particularly difficult to pin down: purchasing-power and nominal estimates differ widely, and wartime disruption makes 2026 figures especially provisional. Analysts also lack reliable data on the war's effects on inflation, employment and public health, so claims about these effects should be dated and attributed.\n\nTerminology is a further area of disagreement. Governments and publishers differ over the name of the Persian Gulf, and over whether to use \"Persia\" or \"Iran\" for historical periods and for the state. Different style guides and political positions produce different usages, and this entry notes the variations rather than adopting one convention as neutral."
    }
  ],
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    "government",
    "silk-road",
    "plate-tectonics",
    "drainage-basin",
    "mountain",
    "river",
    "climate",
    "mesopotamia",
    "unesco",
    "alexander-the-great",
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    "poetry",
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    "art",
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    "exchange-rate",
    "natural-gas",
    "strait-of-hormuz",
    "demography",
    "urbanization",
    "inflation"
  ],
  "sources": [
    {
      "title": "(PDF) Convention on the Legal Status of the Caspian Sea",
      "url": "https://www.academia.edu/50381953/Convention_on_the_Legal_Status_of_the_Caspian_Sea"
    },
    {
      "title": "The new Convention on the Legal Status of the Caspian Sea: New Opportunities and New Challenges - Lexology",
      "url": "https://www.lexology.com/library/detail.aspx?g=f09d9201-9384-499e-a6d8-9d248d8d7a0f"
    },
    {
      "title": "Littoral states agree on Caspian Sea status",
      "url": "https://www.aa.com.tr/en/politics/littoral-states-agree-on-caspian-sea-status/1229011"
    },
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    },
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      "title": "Iran or Persia? — The Two Names of One Country",
      "url": "https://persianheritage.org/iran-or-persia"
    },
    {
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    },
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    },
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    },
    {
      "title": "Name of Iran",
      "url": "https://en.wikipedia.org/wiki/Name_of_Iran"
    },
    {
      "title": "Geography of Iran",
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    },
    {
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    },
    {
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    },
    {
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    },
    {
      "title": "Great Salt Desert",
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    },
    {
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    },
    {
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    },
    {
      "title": "Alborz",
      "url": "https://en.wikipedia.org/wiki/Alborz"
    },
    {
      "title": "Tehran water shortage",
      "url": "https://en.wikipedia.org/wiki/Tehran_water_shortage"
    },
    {
      "title": "Tehran Faces Harsh Summer as Iran’s Water Crisis Deepens",
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    },
    {
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    },
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      "title": "Tehran at risk: The looming water catastrophe",
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    },
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    },
    {
      "title": "Shrinkage and slow restoration of Lake Urmia, Iran",
      "url": "https://ejatlas.org/conflict/shrinkage-of-lake-urmia"
    },
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      "title": "Investigating the causes of Lake Urmia shrinkage: climate change or anthropogenic factors?",
      "url": "https://www.geores.com.cn/joal/EN/abstract/article/1674-6767/66257"
    },
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      "title": "Qanat: Iran's Ancient Water Management System",
      "url": "https://surfiran.com/mag/persian-qanat/"
    },
    {
      "title": "Widespread Extent of Irrecoverable Aquifer Depletion Revealed by Country‐Wide Analysis of Land Surface Subsidence Hazard in Iran - Payne - 2025 - Journal of Geophysical Research: Solid Earth - Wiley Online Library",
      "url": "https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2024JB030367"
    },
    {
      "title": "Iran Was Facing \"Water Bankruptcy\" Before The Bombs Began Falling - CleanTechnica",
      "url": "https://cleantechnica.com/2026/03/09/iran-was-facing-water-bankruptcy-before-the-bombs-began-falling/"
    },
    {
      "title": "Subsidence, Tehran is sinking: the hidden cost of water Materia Rinnovabile",
      "url": "https://www.renewablematter.eu/en/subsidence-tehran-is-sinking-the-hidden-cost-of-water"
    },
    {
      "title": "Climate and temperatures in Iran",
      "url": "https://www.worlddata.info/asia/iran/climate.php"
    },
    {
      "title": "Iran Climate - Iran Safar",
      "url": "https://www.iransafar.co/iran-climate/"
    },
    {
      "title": "Blue Green Atlas - The Climate of Iran",
      "url": "https://bluegreenatlas.com/climate/iran_climate.html"
    },
    {
      "title": "Iran climate: temperature, rain, when to go - Climates to Travel",
      "url": "https://www.climatestotravel.com/climate/iran"
    },
    {
      "title": "Climate of the World: Iran",
      "url": "https://www.weatheronline.co.uk/reports/climate/Iran.htm"
    },
    {
      "title": "(PDF) Forecasting climate change effects on drought using the decadal climate prediction project in arid and semi-arid regions of southeastern Iran",
      "url": "https://www.researchgate.net/publication/392666136_Forecasting_climate_change_effects_on_drought_using_the_decadal_climate_prediction_project_in_arid_and_semi-arid_regions_of_southeastern_Iran"
    },
    {
      "title": "Warming and Drying Intensification Across Iran’s River Basins (1950–2040): Historical Trends and LightGBM-Based Projections",
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    },
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    },
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      "url": "https://www.iranicaonline.org/articles/climate/"
    },
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      "title": "Hyrcanian Forests - UNESCO World Heritage Centre",
      "url": "https://whc.unesco.org/en/list/1584/"
    },
    {
      "title": "ASIA / PACIFIC HYRCANIAN FORESTS ISLAMIC REPUBLIC OF IRAN",
      "url": "https://whc.unesco.org/document/176155"
    },
    {
      "title": "Managing Lake Urmia, Iran for diverse restoration objectives: Moving beyond a uniform target lake level - ScienceDirect",
      "url": "https://www.sciencedirect.com/science/article/pii/S2214581821000410"
    },
    {
      "title": "Climate change impacts on the shrinkage of Lake Urmia",
      "url": "https://iwaponline.com/jwcc/article/13/6/2255/88728/Climate-change-impacts-on-the-shrinkage-of-Lake"
    },
    {
      "title": "The impact of one-decade ecological disturbance on genetic changes: a study on the brine shrimp Artemia urmiana from Urmia Lake, Iran",
      "url": "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6611446/"
    },
    {
      "title": "(PDF) Plant biodiversity of Hyrcanian relict forests, N Iran: An overview of the flora, vegetation, palaeoecology and conservation",
      "url": "https://www.researchgate.net/publication/236178532_Plant_biodiversity_of_Hyrcanian_relict_forests_N_Iran_An_overview_of_the_flora_vegetation_palaeoecology_and_conservation"
    },
    {
      "title": "Iran Population (2026) - Worldometer",
      "url": "https://www.worldometers.info/world-population/iran-population/"
    },
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      "title": "Demographics of Iran",
      "url": "https://en.wikipedia.org/wiki/Demographics_of_Iran"
    },
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      "title": "Iran Population (1960-2026) & Projected decline",
      "url": "https://georank.org/population/iran"
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    },
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    },
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      "title": "Tobacco Protest - Wikiwand",
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      "url": "https://www.nonviolent-conflict.org/wp-content/uploads/2018/04/Chapter-8-Iran.pdf"
    },
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    },
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      "title": "Tobacco Protest",
      "url": "https://en.wikipedia.org/wiki/Tobacco_Protest"
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      "title": "Tobacco Riots",
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    },
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      "title": "Reuter concession",
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      "url": "https://en.wikipedia.org/wiki/Constitutionalization_attempts_in_Iran"
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      "title": "Naser al-Din Shah Qajar",
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      "title": "Constitutional Revolution, 1906 - 1911",
      "url": "https://www.iranchamber.com/history/constitutional_revolution/constitutional_revolution.php"
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    },
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      "title": "Explainer: What was the Iranian Constitutional Revolution?",
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    },
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      "title": "Persian Constitutional Revolution facts for kids",
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      "title": "Henry Drummond Wolff",
      "url": "https://en.wikipedia.org/wiki/Henry_Drummond_Wolff"
    },
    {
      "title": "Anglo-Iranian Oil Company - New World Encyclopedia",
      "url": "https://www.newworldencyclopedia.org/entry/Anglo-Iranian_Oil_Company"
    },
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      "title": "William Knox D%27Arcy",
      "url": "https://en.wikipedia.org/wiki/William_Knox_D%27Arcy"
    },
    {
      "title": "Masjed Soleymān",
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    {
      "title": "BP",
      "url": "https://en.wikipedia.org/wiki/BP"
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      "title": "Anglo-Persian Oil Company",
      "url": "https://en.wikipedia.org/wiki/Anglo-Persian_Oil_Company"
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    {
      "title": "Cabinet of Iran",
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      "title": "List of presidents of Iran",
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    },
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      "title": "The Protests After Mahsa Amini's Death Could Change Iran",
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    },
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    },
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      "url": "https://www.iranintl.com/en/202603030390"
    },
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      "title": "Iran's ‘Assembly of Experts’ names Mojtaba Khamenei as Supreme Leader, Trump says he’s ‘nowhere near’ close to ordering troops on ground",
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      "title": "Iran’s Assembly of Experts to meet within a day to choose Khamenei’s successor",
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    },
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      "title": "Supreme Leader of Iran",
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    },
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    },
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      "title": "Press Releases",
      "url": "https://home.treasury.gov/news/press-releases/sb0026"
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    },
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    },
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      "title": "Iran Looks To Ramp Up Production In The World’s Largest Gas Reservoir",
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    },
    {
      "title": "Qatar’s Gas Ambition Affects Iran’s Reserves",
      "url": "https://www.iranintl.com/en/202403118957"
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    },
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    },
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    },
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    {
      "title": "Featured Topics",
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      "title": "Bushehr Nuclear Power Plant",
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    },
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      "title": "Satellite images show damage inside Iran’s Bushehr nuclear power plant",
      "url": "https://www.yahoo.com/news/world/articles/satellite-images-show-damage-inside-131050423.html"
    },
    {
      "title": "Why an attack on Bushehr nuclear plant would be catastrophic for the Gulf",
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      "title": "Iran Turns to Solar to Address Electricity Shortage",
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    },
    {
      "title": "Iran's UNESCO World Heritage Sites: 27 Inscribed & 59 Tentative",
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      "title": "Persian Gardens: Discover 9 Iranian Gardens Listed By UNESCO",
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      "title": "Persian gardens",
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    {
      "title": "Dowlatabad Garden",
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    {
      "title": "International Day of Nowruz",
      "url": "https://www.unesco.org/en/international-day-nowruz"
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    {
      "title": "International Nowruz Day",
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    },
    {
      "title": "What Is Radif in Persian Music? A Deep Dive into a Classical Tradition",
      "url": "https://rhythmmusicshop.com/blogs/general-articles/what-is-radif-in-persian-music-a-deep-dive-into-a-classical-tradition"
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      "title": "Educational Attainment in Iran - Middle East Institute",
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      "title": "Checking claims about Iran's female literacy, STEM graduate rates",
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      "title": "Gender and education in Iran",
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      "title": "MYTH vs. FACT: Education in Iran — American Iranian Council",
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      "title": "Iran - Literacy rate 2022",
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      "title": "Conflict, no internet, politics isolate students, academics",
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    },
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      "title": "New Academic Year 2026 in Iran: Female University Students Face Security, Economic, and Educational Pressures",
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    },
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      "title": "No Iranian University Features in 2026 Times Higher Education Impact Rankings",
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    },
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      "title": "1,176 Hours Offline, Limited Access Begins for Academics",
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    },
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    },
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      "title": "New Wave of Student Repression Sweeps Iranian Universities - Iran News Update",
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    },
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      "title": "Stanford professor Maryam Mirzakhani wins Fields Medal, first woman to do so",
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    },
    {
      "title": "Maryam Mirzakhani, mathematician and Fields Medal winner, dies at Stanford",
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    },
    {
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    },
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      "title": "Internet censorship in Iran",
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      "title": "Iran-Russia Comprehensive Strategic Partnership Agreement - Middle East Policy Council",
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    },
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      "title": "Landmark Iran-Russia partnership treaty officially takes effect - Tehran Times",
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    },
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      "title": "Iranian parliament ratifies strategic partnership pact with Russia",
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    },
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      "title": "What You Need to Know About Iran Sanctions Snap Back at the UN: A Q&A with Kelsey Davenport",
      "url": "https://www.justsecurity.org/119774/iran-sanctions-snapback-qa/"
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    {
      "title": "Security Council Debates Iran Nuclear Programme amid Dispute over ‘Snapback’ Sanctions as Russian Federation, China Challenge Legality",
      "url": "https://press.un.org/en/2026/sc16316.doc.htm"
    },
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    },
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      "title": "UN imposes 'snapback' sanctions on a hungrier, poorer and more anxious Iran : NPR",
      "url": "https://www.npr.org/2025/09/28/nx-s1-5555869/un-sanctions-iran"
    },
    {
      "title": "European nations hit Iran with ‘snapback’ sanctions over its nuclear program. Here’s what that means",
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    },
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    },
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      "title": "U.N. nuclear chief says inspectors will visit Iran, but Iran says only after final deal",
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    },
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      "title": "IAEA Says Unable to Verify Iran's Enriched Uranium Stockpiles",
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    },
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    },
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    {
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      "url": "https://www.npr.org/2026/02/28/nx-s1-5730158/israel-iran-strikes-trump-us"
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    },
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    },
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    },
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      "url": "https://www.jpost.com/middle-east/iran-news/article-889215"
    },
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      "title": "BERNAMA - Iran Appoints Mojtaba Khamenei As Its New Supreme Leader",
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    },
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    },
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    },
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    },
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    },
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    },
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    },
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    },
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    },
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      "url": "https://thebulletin.org/2026/03/analysis-iran-likely-transferred-highly-enriched-uranium-to-isfahan-before-the-june-strikes/"
    },
    {
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      "url": "https://www.middleeastmonitor.com/20261008-iran-rejects-giving-up-uranium-enrichment-handing-over-enriched-stockpile/"
    }
  ],
  "license": "https://creativecommons.org/licenses/by/4.0/"
}