Russian invasion of Ukraine

The Russian invasion of Ukraine is the full-scale military attack that Russia launched against Ukraine on 24 February 2022, after years of conflict that began with the annexation of Crimea and fighting in Donbas in 2014. Russia's president described the operation as a "special military operation" and cited goals including the "demilitarization" and "denazification" of Ukraine, along with opposition to NATO expansion. Ukraine, most of the United Nations General Assembly, and many legal scholars characterize the attack as an unprovoked war of aggression. It is the largest interstate war in Europe since World War II, and it has reshaped European security, energy markets, and the international legal order. Its effects reach well beyond the battlefield, from nuclear safety at occupied power plants to the global price of food and fuel.

The war's course has moved through several distinct phases: an initial attempt to take Kyiv and the north in early 2022, a long campaign of attrition in the east and south, a Ukrainian counteroffensive and a Russian counter-advance, and, from 2023 onward, a largely static front with heavy use of drones, artillery, and satellite and reconnaissance technology. Russia continued to press for control of all of Donetsk Oblast, while Ukraine has refused to cede territory it still holds. This entry examines the historical background, military operations, occupation and humanitarian consequences, legal accountability, international responses, economic and energy effects, and the diplomatic efforts to end the fighting, including the stalled negotiations of 2025 and 2026.

The entry is organized chronologically where events are sequential and thematically where the topic requires it. Military history is treated separately from the legal, humanitarian, economic, and technological dimensions, which are each significant in their own right. Positions of the parties are attributed to them and set apart from the documented record, and the entry closes with the principal unresolved questions, including territorial settlement, security guarantees, accountability, and reconstruction.

Historical background since 1991

Ukraine’s parliament declared independence on 24 August 1991, during the dissolution of the Soviet Union. A referendum on 1 December confirmed the declaration with 90.32% of votes cast. Independence received majority support in every region, including 54.19% in Crimea and more than 80% in Donetsk and Luhansk oblasts. These results established a nationwide electoral mandate for statehood despite substantial regional differences in language, ethnicity, and historical experience. Ukrainian independence therefore preceded the Soviet Union’s formal dissolution in December rather than simply following it. (zakon.rada.gov.ua)

The settlement of Ukraine’s inherited Soviet nuclear arsenal produced the Budapest Memorandum of 5 December 1994, signed by Ukraine, Russia, the United States, and the United Kingdom in connection with Ukraine’s accession to the Nuclear Non-Proliferation Treaty as a non-nuclear-weapon state. The three other signatories reaffirmed respect for Ukraine’s independence, sovereignty, and existing borders, and undertook to refrain from threats or force and from economic coercion. They also committed to consultations if questions arose over these undertakings and to seeking Security Council action if Ukraine faced aggression or threats involving nuclear weapons. These were security assurances, not an undertaking to provide automatic military defense: the memorandum contained no collective-defense mechanism requiring troops to intervene. (unterm.un.org)

Shared historical origins became a subject of competing political narratives. In his essay of 12 July 2021, “On the Historical Unity of Russians and Ukrainians,” Russian president Vladimir Putin described Russians and Ukrainians as “one people,” invoking their descent from medieval Rus’, shared Orthodox traditions, and centuries of political association. He also attributed much of Ukraine’s territorial formation to Soviet decisions. Ukrainian official narratives instead emphasized a distinct historical community and continuity of Ukrainian statehood. President Volodymyr Zelenskyy’s address of 28 July 2021 presented Kyivan Rus’ as Ukraine’s historical inheritance; his independence-day speech on 24 August described 1991 as the restoration, rather than the first creation, of Ukrainian statehood. These statements expressed competing interpretations of history, not an agreed account of modern national identity. (colloquydowneast.org)

The Orange Revolution of 2004 arose primarily from a disputed presidential election, although the candidates also represented different foreign-policy orientations. Opposition candidate Viktor Yushchenko favored Western integration, while prime minister Viktor Yanukovych favored closer relations with Russia. International election observers documented serious irregularities in the 21 November runoff. On 3 December, Ukraine’s Supreme Court invalidated the result that had declared Yanukovych the winner and ordered a repeat runoff for 26 December, which Yushchenko won. OSCE observers assessed the repeat ballot as substantially closer to international standards. The immediate dispute thus concerned electoral legitimacy and government accountability, rather than a direct popular vote between European and Russian integration projects. (govinfo.gov)

Yanukovych subsequently won the presidency in 2010. On 21 November 2013, his government suspended preparations to sign an association and free-trade agreement with the European Union, citing the need to assess its effects on industry and trade with Russia. Moscow had warned of trade repercussions and promoted its customs union with Belarus and Kazakhstan as an alternative integration framework. The decision triggered Euromaidan demonstrations; police violence against protesters on 30 November broadened the movement into opposition to government abuses and corruption. Following lethal violence in February 2014, Yanukovych left Kyiv and parliament voted to remove him from office. The resulting change of government preceded Russia’s takeover of Crimea and the outbreak of war in Donbas. (eurasianet.org)

Language and regional identity did not map neatly onto national allegiance. Ukraine’s 2001 census recorded 17.3% of residents as ethnic Russians, but 29.6% reported Russian as their native language; the latter category therefore extended well beyond the ethnic Russian population. In 2014, Russian authorities framed Russian-speaking communities as requiring protection, while Ukrainian officials emphasized their inclusion within Ukraine. Parliament’s 23 February vote to repeal the 2012 language law heightened minority concerns, but acting president Oleksandr Turchynov declined to sign it, leaving the law in force. The UN human rights mission’s April 2014 assessment acknowledged tensions and some attacks against ethnic Russians but found that those attacks were neither systematic nor widespread. (2001.ukrcensus.gov.ua)

The 2014 annexation of Crimea and the war in Donbas

On 27 February 2014, armed men wearing uniforms without insignia seized Crimea’s parliament and government buildings in Simferopol. Russian forces subsequently secured control of the peninsula, blockading Ukrainian military installations. The newly installed Crimean authorities organized a referendum on 16 March, without authorization from Ukraine, on joining Russia. On 18 March, Russian president Vladimir Putin signed a treaty purporting to incorporate Crimea and Sevastopol into Russia. On 27 March, the UN General Assembly adopted Resolution 68/262 by 100 votes to 11, with 58 abstentions. The resolution reaffirmed Ukraine’s internationally recognized borders, declared that the referendum had no validity and could not alter the territory’s status, and called on states and international organizations not to recognize that alteration. This distinguished Russia’s effective control from internationally recognized sovereignty. (ohchr.org)

Armed conflict developed in the Donetsk and Luhansk oblasts of eastern Ukraine in April 2014. Groups occupying Donetsk’s regional administration proclaimed a “Donetsk People’s Republic” on 7 April; on 12 April, armed men seized administrative and security buildings in Sloviansk. A parallel “Luhansk People’s Republic” emerged, and both separatist administrations held unrecognized referendums on 11 May. Ukrainian forces fought to recover territory, while the separatists received Russian military, political and economic support. Russia denied being a party to the conflict, but subsequent international judicial findings distinguished its involvement from that of an outside mediator: the European Court of Human Rights found that separatist-held areas were under Russian effective control from 11 May 2014. Its findings included the presence of Russian military personnel from April and the large-scale deployment of Russian troops by August 2014. (hrw.org)

The Minsk agreements attempted to combine military de-escalation with the reintegration of separatist-held territories into Ukraine. The Minsk Protocol of 5 September 2014 and implementing memorandum of 19 September provided for a ceasefire and monitoring arrangements. The more detailed Package of Measures, agreed on 12 February 2015, required a ceasefire from 15 February, withdrawal of heavy weapons, OSCE verification, prisoner releases, and withdrawal of foreign armed formations and military equipment. Its political provisions included local elections under Ukrainian law, constitutional decentralization, and special arrangements for certain districts of Donetsk and Luhansk. Restoration of Ukrainian control over the international border was explicitly scheduled to begin after local elections and conclude after a comprehensive political settlement, envisaged by the end of 2015. (osce.org)

Implementation stalled over both compliance and sequencing. Kyiv argued that secure conditions, demilitarization and border control were necessary for credible elections; Moscow insisted that elections and the agreed political arrangements should precede restoration of border control. Ukraine also rejected Russia’s presentation of the fighting as principally an internal conflict requiring direct negotiation with the separatist authorities. Although the agreements reduced the scale of warfare, they did not produce a settlement. A roughly 427-kilometre contact line remained comparatively stable, with recurrent shelling and local clashes rather than an uninterrupted ceasefire. Additional ceasefire measures agreed in July 2020 reduced shelling and civilian casualties, but violations continued. (chathamhouse.org)

For 14 April 2014–31 December 2021, the UN human rights office estimated 14,200–14,400 conflict-related deaths: at least 3,404 civilians, approximately 4,400 Ukrainian personnel and approximately 6,500 members of armed groups. The civilian total included the 298 people killed aboard Malaysia Airlines Flight MH17 on 17 July 2014; the overall estimates also included non-combat deaths among personnel serving in the conflict zone. An estimated 37,000–39,000 people were injured. UNHCR’s 2021 planning figures recorded 1.45 million people registered by Ukrainian authorities as internally displaced following the conflict and occupation of Crimea. (ukraine.un.org)

The Organization for Security and Co-operation in Europe deployed its Special Monitoring Mission on 21 March 2014, following Ukraine’s request and agreement by all 57 participating states, including Russia. This unarmed civilian mission reported on security conditions and facilitated dialogue; it was not a peacekeeping force capable of enforcing the ceasefire. Restrictions limited its coverage, especially in non-government-controlled areas. In October 2021, for example, protests outside the monitors’ accommodation prevented patrols from leaving the Donetsk hub, interrupting observation along that sector of the front. (osce.org)

Crisis and decision to invade, 2021 to early 2022

In March–April 2021, Russia concentrated troops near Ukraine’s eastern border and in occupied Crimea. On 22 April, Defence Minister Sergei Shoigu announced that units would begin returning to their bases the following day. A renewed buildup later in 2021 expanded into a force capable of attacking from several directions. By 7 February 2022, NATO Secretary General Jens Stoltenberg reported well over 100,000 Russian troops around Ukraine, accompanied by medical units, command-and-control facilities, and logistical support; he also anticipated approximately 30,000 Russian troops in Belarus. On 18 February, U.S. diplomat Michael Carpenter estimated 169,000–190,000 personnel in and near Ukraine. That broader figure included Russian forces in Belarus and Crimea, internal-security personnel, and Russian-backed armed formations in eastern Ukraine, rather than only regular troops along the border. (themoscowtimes.com)

Assessments differed over whether these deployments represented preparation for war, coercive diplomacy, or both. Russian officials repeatedly denied plans to invade. The United States and United Kingdom publicly warned of an increasingly urgent threat, whereas Ukrainian President Volodymyr Zelenskyy cautioned on 28 January that alarmist reporting was damaging Ukraine’s economy; he did not exclude further escalation. Analysts also considered several possible objectives rather than treating a full-scale invasion as certain. A January assessment by Chatham House described a spectrum running from coercing concessions over NATO membership and the Minsk agreements to a large military offensive followed by an imposed political settlement. The disagreement concerned the likelihood, scale, and timing of an attack, not the existence of the Russian buildup. (investing.com)

On 17 December 2021, Russia published two draft security agreements, one addressed to Washington and the other to NATO members. They sought legally binding restrictions on further NATO enlargement, explicitly including Ukrainian membership, and on U.S. military bases and cooperation in non-NATO former Soviet states. The NATO draft proposed limits on deployments beyond the positions existing on 27 May 1997, subject to mutually agreed exceptions, and prohibited NATO military activity in Ukraine and several other regions. These demands extended beyond Ukraine to the wider European security order. NATO and the United States delivered written responses on 26 January 2022, rejecting restrictions on countries’ right to choose their alliances while offering discussions on missile deployments, military-exercise transparency, arms control, and risk reduction. Stoltenberg emphasized that these negotiations would not compromise the alliance’s fundamental principles. (osw.waw.pl)

On 21 February, President Vladimir Putin recognized the self-proclaimed Donetsk and Luhansk people’s republics as independent states, signed cooperation and mutual-assistance agreements with their leaders, and ordered Russian forces into their territories under a stated peacekeeping mandate. Recognition displaced the framework of the Minsk agreements, which had envisaged those areas remaining within Ukraine. UN Secretary-General António Guterres declared the decision a violation of Ukraine’s sovereignty and territorial integrity and rejected the characterization of the proposed deployment as peacekeeping. On 22 February, Russia’s legislature authorized Putin to use military force outside the country. (axios.com)

In the early hours of 24 February, Putin announced a “special military operation,” followed by the full-scale invasion. He presented NATO enlargement as a threat to Russian security, alleged genocide against inhabitants of Donbas, and stated goals of demilitarizing and “denazifying” Ukraine. Russia invoked Article 51 of the United Nations Charter, citing self-defence and requests for assistance from the newly recognized separatist entities. Article 51 preserves individual or collective self-defence if an armed attack occurs; Russia’s invocation did not establish international acceptance that those conditions had been met. During the emergency Security Council meeting, numerous governments rejected the operation as unjustified and contrary to the Charter. On 2 March, the General Assembly adopted a resolution by 141 votes to five, with 35 abstentions, characterizing Russia’s actions as aggression and demanding withdrawal and reversal of the recognition decisions. (en.wikipedia.org)

The northern and Kyiv offensive, February to April 2022

On 24 February 2022, Russian forces attacked Ukraine on several axes: southward from Belarus toward Kyiv, westward from Russia through Chernihiv and Sumy oblasts, toward Kharkiv in the northeast, and northward from occupied Crimea. The northern operation sought to encircle the capital and force a rapid government capitulation. A central element was the helicopter-borne assault on Hostomel’s Antonov Airport, northwest of Kyiv, intended to establish an air bridge for reinforcements. Russian airborne troops reached the airport on the first day, but Ukrainian counterattacks and artillery fire prevented its use for the planned large-scale airlift. Subsequent Russian ground occupation of the airfield did not restore the opportunity for a rapid airborne seizure of Kyiv. (researchcentre.army.gov.au)

The battle for Kyiv developed into fighting along the capital’s approaches rather than a successful assault on its centre. Russian troops occupied Bucha and Hostomel and fought for Irpin to the northwest; forces advancing from the northeast approached Brovary, east of the Dnipro. Ukraine reinforced the capital with reservists, newly formed infantry units, military-academy personnel, and artillery. Russian formations moving along shared roads became intermingled, congesting junctions and slowing their advance. Ukrainian attacks on supply routes compounded the difficulties of supporting forces that had bypassed defended towns. Artillery was particularly important: anti-tank teams disrupted Russian columns, while concentrated fire inflicted losses and prevented their deployment for further advances. Russia neither captured Kyiv nor completed its encirclement. (researchcentre.army.gov.au)

By late March, Ukrainian counterattacks were recovering territory around the capital. On 29 March, following negotiations in Istanbul, Russian deputy defence minister Alexander Fomin announced a substantial reduction of military activity around Kyiv and Chernihiv, presenting it as a confidence-building measure. The withdrawal followed the failure of the northern offensive and proceeded during continued fighting. By early April, Russian forces had abandoned their positions around Kyiv and withdrawn through Belarus or toward Russia for refitting and redeployment. Ukrainian forces also recovered almost all of Chernihiv and Sumy oblasts. The withdrawal removed the immediate ground threat to the capital but did not end missile attacks against it. (interfax.com)

The recovery of towns around Kyiv exposed civilian deaths in Bucha, Irpin, and other settlements. Human Rights Watch investigators working in Bucha on 4–10 April documented apparent summary executions, other unlawful killings, and torture. A United Nations monitoring report published on 7 December 2022 documented the violent deaths of 441 civilians across Kyiv, Chernihiv, and Sumy regions during 24 February–6 April. In Bucha, it verified 73 civilian killings and was corroborating another 105 alleged killings; these were documented cases, not a complete death toll. Investigators found that some executions followed security checks targeting suspected military connections. The discoveries became an important catalyst for further Western measures: on 8 April, the European Union explicitly cited atrocities in Bucha and other occupied towns when adopting its fifth sanctions package. (hrw.org)

The northeastern operations similarly failed to secure their principal cities. Russian troops bypassed Chernihiv and Sumy while attempting to reach Kyiv, leaving extended supply routes vulnerable to Ukrainian attacks; both cities endured bombardment without falling. At Kharkiv, Ukrainian resistance repulsed the initial ground assault, after which Russia subjected the city to sustained artillery, missile, and air attacks. Russian efforts increasingly shifted south toward Izium, whose crossings over the Siverskyi Donets offered an approach toward Ukrainian positions in Donbas. Its capture in early April, together with the redeployment of forces withdrawn from the north, helped establish the northern axis of Russia’s subsequent eastern offensive. (researchcentre.army.gov.au)

Siege of Mariupol and the southeastern campaign

Russia’s southeastern offensive sought to connect occupied Crimea with Russian-held territory in Donbas through a continuous land corridor along the Sea of Azov. Forces advancing from Crimea occupied territory in southern Kherson and Zaporizhzhia oblasts, including Melitopol and Berdyansk, while Russian and Russian-affiliated forces attacked Mariupol from several directions. Control of this coastal belt would connect the southern and eastern occupation zones and provide overland transport routes between them. Mariupol’s capture was therefore important both as the removal of a Ukrainian defensive position and as the consolidation of Russian control over the Azov coast. (themoscowtimes.com)

Russian forces encircled Mariupol by 1 March 2022. Artillery fire, aerial bombardment, and street fighting devastated residential districts and disrupted electricity, heating, water supplies, and medical care. Residents sheltered for weeks in basements with inadequate food, drinking water, and sanitation. Notable attacks included the bombing of maternity and pediatric hospital facilities on 9 March and the destruction of the Drama Theater, used as a civilian shelter, on 16 March. A 2024 investigation by Human Rights Watch, Truth Hounds, and SITU Research found that 443 of 477 high-rise residential buildings—93 percent—in its central-city study area had been damaged or destroyed by 20 May 2022. This figure described the surveyed area rather than all buildings across Mariupol. (documents.un.org)

As Russian forces gained control of the city, Ukrainian defenders concentrated in the Azovstal steelworks, whose underground facilities provided shelter for troops and civilians during continued bombardment. The plant remained the final substantial Ukrainian defensive position into May. Operations coordinated by the United Nations and the International Committee of the Red Cross evacuated more than 600 civilians from Azovstal and other parts of Mariupol by 8 May. Ukrainian military leaders subsequently ordered the remaining defenders to preserve their lives and cease defending the city. The surrender process concluded on 20 May, when Russia announced control of the plant and said that 2,439 defenders had surrendered over the preceding days; that total was a Russian official figure. (kelo.com)

Farther west, Kherson fell under Russian control in early March: on 2 March, Mayor Ihor Kolykhaiev reported that Russian troops had entered the city and council building. It was the only Ukrainian regional capital captured during the initial full-scale offensive. Its position on the western bank of the Dnipro subsequently created a logistical vulnerability for the occupying forces. Ukrainian strikes against river crossings, including the Antonivka bridges, disrupted reinforcement and resupply during the summer and autumn counteroffensive. On 9 November, General Sergei Surovikin told Defence Minister Sergei Shoigu that supplying the city was no longer practicable, and Shoigu ordered withdrawal to the eastern bank. Ukrainian troops entered Kherson on 11 November 2022; Russian forces retained territory across the river. (kelo.com)

Odesa remained outside Russian occupation, but the naval blockade and attacks on the Black Sea coast severely restricted Ukraine’s export capacity. The closure of maritime routes left grain exports at minimal levels for almost five months, according to a United States Department of Agriculture assessment. The Black Sea Grain Initiative, signed in Istanbul on 22 July 2022 with UN and Turkish mediation, established a humanitarian shipping corridor serving Odesa, Chornomorsk, and Pivdennyi. A Russian missile strike hit Odesa’s port on 23 July, less than a day after the agreement, illustrating the continuing exposure of port facilities even as arrangements were made to resume commercial food exports. (apps.fas.usda.gov)

Ukrainian counteroffensives and Russian annexation declarations, late 2022

On 6 September 2022, Ukrainian forces launched a surprise counteroffensive in Kharkiv Oblast, breaking through Russian positions and rapidly recovering territory occupied since the opening months of the invasion. (apnews.com) Mechanized formations advanced toward Balakliia, Kupiansk and Izium, threatening the transport network supporting Russia’s northeastern grouping. By 10 September, Ukrainian troops had reached central Kupiansk, a major railway supply hub, while Russia announced its withdrawal from the Izium area. Izium had served as a logistics base for Russian operations southward into Donbas; its loss disrupted that axis of attack. Russian troops abandoned ammunition and equipment during the retreat. That evening, President Volodymyr Zelenskyy reported that Ukrainian forces had recovered approximately 2,000 square kilometres since the beginning of September, an early official estimate rather than the final extent of the advance. (investing.com)

On 21 September, President Vladimir Putin ordered a “partial mobilization,” and Defence Minister Sergei Shoigu announced a planned call-up of 300,000 reservists. The measure expanded Russia’s available manpower after its battlefield losses, rather than constituting a declaration of general mobilization. (finance.yahoo.com) Russia also began strengthening defensive positions along its southern and eastern fronts. These measures accompanied a political commitment to defend occupied Ukrainian regions as Russian territory, linking the reinforcement of the army to Moscow’s impending annexation declarations. (researchbriefings.files.parliament.uk)

Russian-backed authorities held purported accession referendums in occupied parts of Donetsk, Luhansk, Zaporizhzhia and Kherson oblasts in late September. Ukraine rejected the votes; United Nations Secretary-General António Guterres stated that they could not constitute a genuine expression of popular will. On 30 September, Putin signed accession treaties with the Russian-installed leaders of the four regions. Russia’s parliament ratified the treaties on 3–4 October, and Putin signed the corresponding legislation on 5 October. The declarations did not reflect military control of the four oblasts: Russian forces had not secured their complete administrative territories, and Ukrainian counteroffensives continued within the claimed regions. (researchbriefings.files.parliament.uk) On 12 October, the United Nations General Assembly adopted Resolution ES-11/4 by 143 votes to five, with 35 abstentions. It condemned the attempted illegal annexation, declared the referendum-related decisions invalid under international law, and called for their reversal. (press.un.org)

On 8 October, an explosion damaged the Kerch Bridge, the road-and-rail connection between Russia and occupied Crimea. Putin blamed Ukrainian security services and presented the subsequent Russian bombardment as a response. On 10 October, he announced long-range strikes against Ukrainian energy, military command and communications facilities. (apnews.com) This marked an escalation into a sustained campaign against power generation and transmission infrastructure: repeated attacks damaged Ukraine’s electrical grid, producing widespread blackouts and electricity rationing during the following months. (ohchr.org)

Russia’s defensive consolidation remained uneven. In September, Ukrainian forces established bridgeheads east of the Oskil River, where Russia was attempting to organize a new defensive line. (hansard.parliament.uk) In the south, Russia announced its withdrawal from Kherson city on 9 November, abandoning its exposed position on the western bank of the Dnipro while retaining occupied territory across the river. Its army fortified fronts elsewhere in southern and eastern Ukraine, shifting toward holding territory after the autumn reversals. The river became a substantial defensive barrier around Kherson, while the eastern front remained contested rather than settling into an agreed or permanent boundary. (researchbriefings.files.parliament.uk)

Attrition and positional warfare, 2023 to 2025

The battle for Bakhmut, which began in 2022, culminated in Russian control of the devastated city in May 2023. The Wagner Group, led by Yevgeny Prigozhin, spearheaded the assault, employing both professional fighters and recruits drawn from Russian prisons. Months of artillery bombardment and street fighting reduced much of the city to ruins. Prigozhin declared its complete capture on 20 May; Ukraine initially disputed that all resistance inside the city had ended and continued fighting on its flanks. On 25 May, Wagner began transferring its positions to regular Russian troops. Moscow presented the capture as a route to further advances in Donbas, while Kyiv argued that its prolonged defense had exhausted Russian assault forces. The city's capture did not end fighting in the surrounding area. (investing.com)

Ukraine launched its principal 2023 counteroffensive in June, attacking southward in Zaporizhzhia Oblast and along the Donetsk–Zaporizhzhia boundary, while also conducting operations around Bakhmut. The southern campaign sought to threaten the occupied land corridor connecting Russia to Crimea. Ukraine announced the recapture of Robotyne on 28 August, but did not reach Tokmak or Melitopol. A Reuters mapping analysis measured an advance of approximately 7.5 kilometres on the Robotyne axis after six months of fighting: a tactical penetration rather than the operational breakthrough required to sever the corridor. Gains elsewhere likewise failed to produce a wider collapse of Russian defenses. (investing.com)

Russian defenses combined minefields, anti-tank obstacles, trenches, artillery and observation by unmanned aircraft. Mines slowed and channelled attacking vehicles, exposing troops and engineering equipment to fire while they attempted to clear passages. A September 2023 Royal United Services Institute study found that Russian forces had sought to deepen some minefields from the doctrinal 120 metres to approximately 500 metres. Its subsequent assessment, based on interviews with Ukrainian personnel, identified insufficient collective training, delayed equipment deliveries and the dispersion of offensive forces as additional constraints. These mechanisms helped turn the attempted breakthrough into attritional warfare, in which ammunition, trained personnel and replacement equipment were expended for limited territorial gains. (rusi.org)

Avdiivka became the next major urban battle. Russia intensified its offensive in October 2023, attacking the city's flanks and threatening its supply routes. Ukrainian defenders faced shortages of artillery ammunition alongside increasingly destructive aerial bombardment. On 17 February 2024, commander-in-chief Oleksandr Syrskyi ordered withdrawal to avoid encirclement, giving Russia its largest urban gain since Bakhmut. Artillery and guided glide bombs battered defensive positions; the latter combined large explosive payloads with guidance and wing kits, enabling aircraft to attack from a distance. Fighting subsequently extended across other industrial towns: Ukraine announced its withdrawal from Vuhledar on 2 October 2024, while Kurakhove and Toretsk became major battlefields in early 2025. (investing.com)

Ukraine opened a geographically distinct offensive on 6 August 2024 by crossing into Russia's Kursk Oblast. Mechanized units initially overwhelmed lightly armed border guards and conscripts, captured Sudzha and established a salient covering approximately 1,300 square kilometres at its greatest extent. Ukrainian leaders described several objectives: creating a border buffer, diverting Russian troops, taking prisoners for exchanges and gaining leverage in future negotiations. The operation compelled Russia to reinforce Kursk, but did not halt its advance in eastern Ukraine. Russian counterattacks, later supported by North Korean soldiers, progressively reduced the salient. (apnews.com)

The principal Kursk salient largely collapsed in March 2025. On 26 April, Russia's chief of the general staff, Valery Gerasimov, reported that the region had been fully retaken; Ukraine denied that fighting there had ended. The broad occupation around Sudzha had nevertheless been lost, substantially reducing the territorial leverage obtained in August 2024. Smaller cross-border positions remained contested: on 22 June, Syrskyi stated that Ukraine controlled approximately 90 square kilometres in Kursk's Hlushkov district. That claim concerned a limited border foothold, rather than the extensive salient held during the opening months of the operation. (apnews.com)

Occupation governance, forced displacement, and children

Russian-appointed authorities replaced Ukrainian administrative institutions in occupied areas with Russian systems of local government, policing, courts, taxation and business registration. An Office of the United Nations High Commissioner for Human Rights (OHCHR) report published on 20 March 2024, drawing on 2,319 interviews, documented pressure on officials and public-sector employees to serve the occupation administration. Businesses were required to re-register under Russian law and use the Russian ruble; OHCHR recorded the detention and beating of a Kherson-region grocer who resisted both requirements. By 31 December 2023, Russia had appointed 436 judges, predominantly from Russia, to courts in the occupied parts of Donetsk, Luhansk, Zaporizhzhia and Kherson regions. (ukraine.ohchr.org) Education was similarly reorganized: Russian curricula and citizenship requirements were imposed, Ukrainian-language education was restricted, and schools and youth organizations introduced military-patriotic training, as documented in OHCHR’s March 2025 report on children’s rights. (ukraine.ohchr.org)

Access to essential services became a mechanism of pressure to obtain Russian passports. OHCHR documented restrictions affecting healthcare, pensions, social assistance, humanitarian aid, banking and property ownership. Russian presidential decrees required Ukrainian residents to obtain Russian citizenship or regularize their status under Russian law, with the deadline eventually extended to 10 September 2025; non-compliance exposed residents to threatened “deportation.” Checkpoints imposed additional searches and questioning on people without Russian documents. In its report covering events through December 2025, OHCHR also recorded notices designating more than 38,000 homes as “potentially abandoned.” Owners could be required to appear within 30 days and register their property in the Russian system, something available in practice only to Russian passport holders. These rules affected both remaining residents and displaced owners seeking to protect homes or return. (ukraine.ohchr.org)

“Filtration” referred to security screening conducted by Russian and Russian-affiliated authorities, particularly against civilians leaving Mariupol and surrounding areas. Human Rights Watch’s September 2022 investigation, based on interviews with 117 Ukrainians, described fingerprinting, facial photography, body searches, inspection of telephone contacts and messages, and questioning about political views or connections to Ukrainian forces. It documented forced transfers to Russia and Russian-controlled territory, including cases in which civilians lacked a meaningful option to reach Ukrainian-controlled areas. Russian authorities described movements as evacuations. Figures require distinctions: the Russian news agency TASS reported more than 2.8 million arrivals from Ukraine by late July 2022, including 448,000 children, but these totals were not independently verified and did not establish how many movements were coerced. (hrw.org) Separately, OHCHR documented widespread torture and ill-treatment in detention: 90 per cent of 171 civilian detainees whose treatment it examined had experienced such abuse. (ukraine.ohchr.org)

Children were transferred through several routes, including relocations from residential institutions, separation from relatives, and subsequent placement with Russian families or institutions. On 12 March 2026, the United Nations Independent International Commission of Inquiry reported that it had verified deportations or transfers of more than 1,200 children from five Ukrainian regions; 80 per cent of children in its documented cases had not returned. It found that Russian authorities systematically granted citizenship, placed children’s profiles on adoption databases, and arranged long-term placements across 21 Russian regions and occupied Ukrainian territory. The commission identified the involvement of President Vladimir Putin and children’s rights commissioner Maria Lvova-Belova, and concluded that the documented deportations, forcible transfers and enforced disappearances constituted crimes against humanity. These were investigative findings, distinct from a criminal conviction. (ukraine.un.org)

Return efforts combined individual family searches, Ukrainian state coordination and third-country mediation. Ukraine established the Bring Kids Back UA action plan in 2023; Canada and Ukraine launched the International Coalition for the Return of Ukrainian Children on 2 February 2024 to coordinate tracing, reunification and reintegration. (commonslibrary.parliament.uk) Qatar helped facilitate negotiated returns. Ukraine’s ombudsman reported 1,183 children returned from Russia and occupied territory by early 2025, although the UN had not independently verified that total. Returns required establishing children’s whereabouts, confirming family relationships and arranging travel; the commission’s 2026 investigation documented delays, security risks and failures by Russian authorities to disclose locations to parents or legal guardians. (commonslibrary.parliament.uk)

Accountability, international law, and legal proceedings

On 2 March 2022, the United Nations General Assembly adopted Resolution ES-11/1 by 141 votes to five, with 35 abstentions. It deplored Russia’s aggression as a violation of Article 2(4) of the UN Charter and demanded the immediate, complete and unconditional withdrawal of Russian forces from Ukraine’s internationally recognized territory. Belarus, Eritrea, North Korea, Russia and Syria voted against it. The resolution also demanded protection for civilians and humanitarian access; it was not a criminal judgment against particular individuals. (press.un.org)

Ukraine instituted proceedings before the International Court of Justice (ICJ) on 26 February 2022 under Article IX of the Genocide Convention, contesting Russia’s allegations of genocide in Donetsk and Luhansk and their use to justify military action. On 16 March, the court ordered Russia to suspend immediately the military operations begun on 24 February and ensure that armed units, organizations and persons under its direction or control took no steps to advance those operations. It also ordered both parties not to aggravate the dispute. These were binding provisional measures, not a final judgment on the merits. In its jurisdictional judgment of 2 February 2024, the court allowed Ukraine’s request for a declaration that there was no credible evidence it had committed genocide in Donetsk and Luhansk to proceed. It declined jurisdiction over separate claims that Russia’s invasion and recognition of the separatist entities themselves violated the Genocide Convention. (api.icj-cij.org)

The International Criminal Court (ICC) addressed individual criminal responsibility. On 17 March 2023, its Pre-Trial Chamber II issued arrest warrants for Vladimir Putin and Maria Lvova-Belova, Russia’s presidential commissioner for children’s rights. Judges found reasonable grounds to believe that both bore responsibility for the alleged war crimes of unlawful deportation and unlawful transfer of children from occupied Ukrainian territory to Russia, committed at least from 24 February 2022. The warrants were not convictions. Ukraine’s declarations accepting ICC jurisdiction supplied a territorial basis for investigating alleged crimes despite Russia’s non-membership; Ukraine subsequently became a party to the Rome Statute on 1 January 2025. (icc-cpi.int)

Prosecution of the crime of aggression required a separate mechanism because the ICC’s aggression jurisdiction is narrower than its jurisdiction over war crimes, crimes against humanity and genocide. The proposed special tribunal would address senior leaders’ responsibility for planning, preparing, initiating or executing aggression, rather than particular battlefield offences. After negotiations involving legal experts from around 40 states, Ukraine and the Council of Europe signed an establishment agreement in Strasbourg on 25 June 2025. On 15 May 2026, 36 countries and the European Union adopted the enlarged partial agreement governing its management and financing. The tribunal’s framework nevertheless preserves personal immunity for serving heads of state, heads of government and foreign ministers: investigations and preparation of charges may proceed, but their trials require departure from office or waiver of immunity. (coe.int)

Reparation mechanisms developed separately from criminal proceedings. Following General Assembly Resolution ES-11/5 of 14 November 2022, the Council of Europe established the Register of Damage for Ukraine in 2023; it opened for claims on 2 April 2024. The register receives claims and supporting evidence concerning damage, loss or injury caused by Russia’s internationally wrongful acts on or after 24 February 2022 within Ukraine’s internationally recognized borders. Individuals, legal entities and Ukrainian public authorities can submit claims digitally through Diia. Its board determines eligibility for recording, but does not decide claims on their merits, value losses or award compensation. A convention establishing an International Claims Commission for Ukraine opened for signature in The Hague on 16 December 2025. Upon its establishment, the commission is intended to assess compensation claims and take over the register’s work and evidence. (rd4u.coe.int)

International responses, military aid, and sanctions

The United States supplied Ukraine through two principal mechanisms: Presidential Drawdown Authority, which transferred equipment from existing military stocks, and the Ukraine Security Assistance Initiative, which financed procurement from industry. By 9 January 2025, the Department of Defense reported approximately $65.9 billion in security-assistance commitments since the full-scale invasion began; commitments did not necessarily represent equipment already delivered. Assistance included Patriot and NASAMS air defenses, HIMARS rocket artillery, 155-mm howitzers and ammunition, Bradley infantry fighting vehicles, Abrams tanks, and ATACMS missiles. These packages combined weapons with maintenance, spare parts, communications equipment, and training needed to operate and sustain them. (2021-2025.state.gov)

European assistance included German Patriot and IRIS-T air-defense systems, Leopard tanks, and artillery, while the United Kingdom supplied Challenger 2 tanks, AS90 self-propelled guns, and Storm Shadow cruise missiles. Britain committed £4.5 billion in military support for 2025, combining its annual allocation with additional financing. A further procurement channel emerged after US President Donald Trump and NATO Secretary General Mark Rutte agreed on the Prioritised Ukraine Requirements List initiative on 14 July 2025: European allies and Canada financed packages of US equipment, generally worth approximately $500 million each, with NATO coordinating delivery. The Netherlands funded the first package, announced on 4 August. By June 2026, NATO reported more than $6 billion in funding commitments through this mechanism. (bundesregierung.de)

The European Union, G7 members, and other partners imposed restrictions on Russian banking, trade, energy exports, and designated individuals and organizations. EU measures included removing selected banks from SWIFT financial messaging, restricting exports of dual-use goods and advanced technology, freezing assets, and imposing travel bans. An embargo on most seaborne Russian crude imports operated alongside an oil-price-cap mechanism: participating jurisdictions restricted shipping, insurance, and related services for Russian oil sold above the permitted price. The original crude-oil ceiling was $60 per barrel; on 18 July 2025, the EU adopted a reduction to $47.60 and a mechanism for subsequent adjustment. This was an EU decision, rather than a uniform change across all G7 jurisdictions. Successive packages also targeted vessels used to circumvent restrictions and third-country businesses supplying Russia’s military-industrial sector. (consilium.europa.eu)

Sanctions also immobilized Russian central bank reserves, including approximately €210 billion in the EU—the majority of the reserves immobilized worldwide—with substantial holdings at Belgium-based Euroclear. Immobilization prevented Russia from accessing the assets but did not itself transfer ownership. In May 2024, the EU authorized the use of extraordinary net revenues generated by their immobilization to support Ukraine’s defense and reconstruction. The G7 subsequently developed approximately $50 billion in Extraordinary Revenue Acceleration loans, serviced through future revenue flows rather than immediate confiscation of the principal. EU rules adopted in October 2024 allocated 95% of these extraordinary revenues to the loan-repayment mechanism and 5% to the European Peace Facility. Proposals to confiscate the underlying reserves raised questions about sovereign immunity, litigation, and financial risk; in December 2025, the EU separately prohibited transfers of immobilized central-bank assets back to Russia on a temporary basis. (eur-lex.europa.eu)

Countries maintaining relations with Russia did not adopt a single common position. China’s February 2023 position paper called for respect for sovereignty, negotiations, and an end to unilateral sanctions; Chinese customs figures put bilateral trade with Russia at a record $244.8 billion in 2024. India increased purchases of Russian oil and pursued expanded trade settlement in rupees and roubles; Prime Minister Narendra Modi visited Moscow in July 2024 while advocating dialogue and diplomacy. Turkey declined to join Western sanctions while supporting Ukraine’s territorial integrity and supplying arms to Kyiv. These relationships preserved commercial and diplomatic channels with Russia without necessarily implying recognition of its territorial claims. (fmprc.gov.cn)

Energy, economic, and food shocks

Russia’s reductions in natural gas deliveries transformed an already tightening European energy market into a supply crisis. Russian pipeline exports to OECD Europe fell by approximately 50%, or 83 billion cubic metres, in 2022. European liquefied natural gas imports increased by 64 billion cubic metres—more than 60%—as buyers competed for replacement supplies. This helped balance European markets but diverted cargoes from more price-sensitive importing countries. High prices also forced industrial adjustment: the International Energy Agency estimated that production in gas-intensive European Union sectors, including fertilizers, steel and aluminium, fell by about 8% in 2022. Fuel-switching, conservation and reduced industrial activity contributed to lower consumption. (iea.org)

The reduction of Russian pipeline dependence continued after the immediate crisis. Gas transit through Ukraine declined from approximately 40 billion cubic metres in 2021 to 15 billion in 2024, then stopped on 1 January 2025 after the five-year transit agreement expired without renewal. This ended a route that had remained operational throughout almost three years of full-scale war; it did not end all Russian gas deliveries to Europe. The International Energy Agency assessed that the cessation posed no imminent supply-security risk to the European Union, although replacing these volumes would increase European demand for liquefied natural gas and tighten the global market. (iea.org)

Ukraine’s real gross domestic product contracted by 29.1% in 2022 as infrastructure destruction, population displacement, interrupted electricity supplies and disrupted trade reduced production. External financing became essential to maintaining civilian government services. The World Bank’s PEACE project reimbursed eligible public expenditure, including salaries for civil servants, teachers and health workers, and social assistance payments, using donor grants and guaranteed loans. On 31 March 2023, the International Monetary Fund approved a four-year, US$15.6 billion Extended Fund Facility arrangement as part of an envisaged US$115 billion international support package. Its financing and policy conditions addressed fiscal and external stability, debt sustainability and institutional reform rather than replacing the separate channels for military assistance. (documents1.worldbank.org)

Russia’s wartime fiscal commitments expanded even as financing and supply constraints accumulated. SIPRI estimated military expenditure at US$149 billion, or 7.1% of GDP, in 2024, rising to US$190 billion and 7.5% of GDP in 2025; these estimates cover more than the narrowly defined national-defence budget. The Bank of Russia identified acute labour shortages, high capacity utilization and complicated supply chains as constraints, raising its policy rate to 21% effective 28 October 2024 to counter inflation. Energy receipts remained important but fluctuated with prices, exchange rates and sanctions-related discounts: federal oil and gas revenues fell from 11.13 trillion roubles in 2024 to 8.48 trillion in 2025, a decline of 24%. These are budget receipts from the sector, not a measure of total export earnings. (sipri.org)

Commercial shipping from Ukrainian Black Sea ports halted in February 2022, disrupting grain and vegetable-oil supplies. The FAO reported that its international food-price index rose 12.6% in March 2022 to a then-record level, with cereal prices increasing 17.1%. On 22 July 2022, the United Nations and Turkey brokered the Black Sea Grain Initiative, reopening exports from Odesa, Chornomorsk and Pivdennyi. A joint coordination centre in Istanbul organized vessel movements and inspections by Russian, Ukrainian, Turkish and UN personnel; Ukrainian vessels guided ships past mined areas into the agreed corridor. The arrangement transported 32.9 million tonnes of food commodities before Russia declined renewal on 17 July 2023. Food prices nevertheless reflected wider supply and demand conditions as well as the corridor: by March 2023, the FAO index was 20.5% below its March 2022 peak, with ample supplies, subdued import demand and the initiative’s extension contributing to the decline. (un.org)

Zaporizhzhia nuclear power plant and nuclear safety

Russian forces seized the Zaporizhzhia Nuclear Power Plant on 4 March 2022. Its six VVER-1000 reactors make it Europe’s largest nuclear power station. During the takeover, a projectile struck its training centre, several hundred metres from the reactors, causing a fire that was subsequently extinguished. Ukraine reported to the International Atomic Energy Agency (IAEA) that the reactors’ safety systems remained intact and no radioactive material had been released. Ukrainian operating personnel initially continued running the facility under the authority of the Russian military commander; Rosatom personnel subsequently arrived. The IAEA identified interference with operational decision-making and the extreme stress experienced by staff as additional safety concerns. (iaea.org)

IAEA Director General Rafael Mariano Grossi established a permanent monitoring mission at the Russian-controlled site on 1 September 2022, with rotating teams observing equipment, staffing, radiation monitoring and military incidents. Their presence did not give the agency control over plant operations or unrestricted access: its 2024 reports documented denied access to parts of turbine halls, radioactive-waste facilities and locations of alleged attacks. On 13 April 2024, the remaining reactor in hot shutdown, Unit 4, entered cold shutdown, placing all six units in that condition. Shutdown reduced cooling requirements but did not eliminate the need to remove heat from reactor fuel and spent-fuel pools. (iaea.org)

Repeated losses of external electricity exposed the vulnerability of this cooling system. Damage to transmission lines could disconnect the plant from the electrical grid, requiring emergency diesel generators to supply pumps and other safety equipment. These generators provide redundancy, but depend on functioning machinery, maintenance and continuing fuel supplies. On 23 September 2025, the station lost all off-site power for the tenth time during the war. The outage lasted 30 days, until the 750-kilovolt Dniprovska line was reconnected on 23 October following repairs conducted under an IAEA-negotiated local ceasefire. During the interruption, diesel generators maintained essential functions; the IAEA reported no rise in radiation levels, while emphasizing that emergency power was not an adequate long-term substitute for reliable grid connections. (iaea.org)

Cooling-water availability became a separate concern after the destruction of the Kakhovka dam on 6 June 2023 depleted the reservoir previously used to replenish the plant’s water supply. The site retained alternatives, including its large cooling pond, the neighbouring thermal station’s discharge channel and groundwater wells. In its September 2024 report, the IAEA recorded approximately 250 cubic metres per hour supplied by 11 wells to 12 sprinkler ponds serving the shutdown reactors’ cooling systems. The large cooling pond had fallen below the circulation pumps’ nominal operating level of 15 metres on 10 July, although pumping remained possible. Further decline could require supplementary pumps. These findings distinguished loss of the original water source from an immediate failure of cooling, while showing why damage to remaining ponds or pumping systems would reduce safety margins. (iaea.org)

Russia and Ukraine repeatedly accused each other of shelling the plant and endangering its safety. Their competing allegations were recorded at the UN Security Council on 30 May 2023. IAEA observations established damage in particular incidents without necessarily establishing responsibility: experts inspected the aftermath of drone attacks on 7 April 2024, including damage at Unit 6, but could not verify several other alleged attacks because access was denied. Plant safety concerns also accompanied disputes over nuclear weapons: at a UN disarmament meeting on 17 October 2022, Ukraine accused Moscow of threatening nuclear use, while Russia described its deterrence policy as defensive. (press.un.org)

Protection rests on both international humanitarian law and operational safeguards. Article 56 of Additional Protocol I prohibits attacks on nuclear generating stations when they may release dangerous forces and cause severe civilian losses, even if the stations qualify as military objectives; exceptions are narrowly defined. Grossi’s five principles, presented on 30 May 2023, called for no attacks from or against the plant, no use of it as a base for heavy weapons or personnel conducting attacks, secure external power, protection of essential safety systems, and no actions undermining those requirements. Unlike territorial negotiations, these measures addressed immediate accident prevention at an occupied nuclear installation. (blogs.icrc.org)

Drones, electronic warfare, and long-range strikes

First-person-view (FPV) drones became widespread precision-strike weapons, complementing reconnaissance aircraft and artillery rather than replacing them. Operators use live video to guide expendable aircraft against vehicles, positions and personnel; Russia’s Lancet loitering munitions also combine target-search and attack functions. Persistent aerial observation made movement, resupply and casualty evacuation increasingly exposed. Russian guided glide bombs created a different threat: UMPK kits added deployable wings and satellite-navigation guidance to conventional bombs, notably FAB-500 and FAB-1500 models, allowing stand-off attacks capable of destroying substantial fortifications. Their employment expanded markedly during 2024. (static.rusi.org)

Electronic warfare contested the navigation, command and video links on which these systems depended. Vehicle-mounted jammers sought to interrupt approaching FPVs’ control signals or video feeds, while navigation interference affected satellite-guided weapons. Fibre-optic FPVs bypassed radio-link jamming by transmitting commands and imagery through a cable paid out during flight. (static.rusi.org) Adaptation also extended to satellite-connected aircraft. On 2 February 2026, Ukraine announced a registration “whitelist” for Starlink terminals, developed with SpaceX. Defence Minister Mykhailo Fedorov described it as a response to Russian drones using Starlink for real-time control over long distances; unregistered terminals were to be disconnected. (mod.gov.ua)

Commercial space services supplied both connectivity and remote sensing. USAID and SpaceX delivered 5,000 Starlink terminals to Ukraine in April 2022, providing an alternative communications channel as terrestrial networks were disrupted. (usaid.gov) Satellite imagery served a separate intelligence function. A contract announced on 12 November 2024 between Ukraine’s defence ministry, Rheinmetall and ICEYE, supported by Germany, expanded access to synthetic-aperture-radar imagery. Radar satellites could image selected areas at night and through cloud cover, enabling military commanders to monitor locations irrespective of the availability of optical imagery. This followed ICEYE’s August 2022 agreement with the Serhiy Prytula Charity Foundation and a July 2024 memorandum with the ministry. (mod.gov.ua)

Long-range attacks intensified during 2025–2026. UN human-rights monitors recorded 686 civilians killed and 4,451 injured by missiles and loitering munitions in Ukraine during 2025, a 66 per cent increase in combined casualties from these weapons compared with 2024. (ukraine.ohchr.org) During the winter of 2025–2026, Russian forces repeatedly struck generation, transmission and distribution facilities, often coordinating hundreds of weapons in an attack. Damage across the electrical grid triggered emergency outages affecting millions, while repeated strikes also disrupted centralized heating. These were cumulative attacks on an already damaged system, rather than isolated losses of individual power plants. (ukraine.ohchr.org)

Ukraine’s strike campaign targeted Russian military and industrial facilities, including airfields and oil refineries. Operation Spiderweb on 1 June 2025 demonstrated that strategic-depth attacks need not involve aircraft flying from Ukrainian territory: FPV drones were covertly transported into Russia and launched near bomber bases. (axios.com) In its subsequent account, Ukraine’s Security Service said 117 drones attacked four military airfields. (ssu.gov.ua) OSCE monitors reported that Ukrainian refinery strikes increased significantly from August 2025, with coordinated long-range attacks occurring several times weekly. (odihr.osce.org) The campaign continued into 2026; a 28 June report documented another refinery fire following a Ukrainian drone attack and Russian President Vladimir Putin’s acknowledgment of fuel shortages. (apnews.com)

Defensive adaptation combined dispersion, concealment, hardened positions, decoys and interception. Both sides separated artillery pieces and ammunition stocks, protected exposed equipment and periodically moved guns to avoid heavier strikes. (static.rusi.org) Industrial procurement likewise shifted toward mass production: in March 2025, Ukrainian procurement official Glib Kanevskyi announced plans to purchase 4.5 million FPV drones, distinguishing the year’s intended acquisitions from the more than 1.5 million drones purchased by two state agencies in 2024. (mod.gov.ua) Ukraine also expanded drone-on-drone interception. On 25 July 2025, President Volodymyr Zelenskyy requested production capacity of 1,000 interceptor drones daily—a stated manufacturing target, not a reported delivery total. (president.gov.ua)

Information warfare and cyber operations

Cyber operations targeted Ukrainian government networks, communications and civilian infrastructure before and during the invasion. Microsoft reported on 27 April 2022 that it had observed more than 237 operations by at least six Russia-aligned state actors since shortly before the invasion, including espionage and destructive attacks. Its January investigation identified WhisperGate malware on Ukrainian government, nonprofit and information-technology systems: although presented as ransomware, it was designed to destroy data rather than enable recovery after payment. In September 2024, a joint advisory from American, British, Ukrainian and other security agencies attributed WhisperGate to Russia’s military-intelligence Unit 29155. These were attributed findings by particular investigators, rather than a complete count of wartime cyber activity. (blogs.microsoft.com)

Communications and energy attacks demonstrated how intrusions could disrupt services beyond individual computers. The European Union attributed the attack on Viasat’s KA-SAT satellite network on 24 February 2022 to Russia, stating that it began approximately one hour before the invasion and caused communications outages in Ukraine and several EU states. In April, ESET and Ukraine’s Computer Emergency Response Team, CERT-UA, investigated and thwarted an attempted attack using Industroyer2 against high-voltage substations. The malware issued commands through an industrial-control protocol, while accompanying data-wiping programs targeted supporting systems; ESET attributed the operation to Sandworm. On 12 December 2023, an attack disrupted Kyivstar’s mobile and internet services, with Ukrainian authorities subsequently identifying Sandworm as responsible. (consilium.europa.eu)

Espionage also supplied material and access for influence operations. Mandiant identified UNC1151 as a Belarus-sponsored group whose intrusions supported the Ghostwriter campaign, including phishing messages exploiting evacuation and humanitarian themes to target Ukrainian entities. Its research distinguished the credential-stealing group from the associated information operation, rather than treating every activity under the two names as identical. Such operations sought to exploit trusted accounts and apparently legitimate documents to reach audiences already concerned about wartime emergencies. Separately, Microsoft described cooperation with Ukrainian cybersecurity officials and private enterprises to identify malicious activity and remediate compromised networks. (cloud.google.com)

Russia combined external propaganda with restrictions on domestic reporting. Laws brought into force on 4 March 2022 criminalized specified forms of allegedly false reporting about the armed forces, with maximum prison sentences of 15 years; independent outlets including TV Rain and Echo of Moscow were blocked or closed. Ukrainian public messaging also circulated morale-building stories that were not established battlefield accounts: the air force later acknowledged that the celebrated “Ghost of Kyiv” was a collective legend rather than an identifiable fighter ace. This differed evidentially from Russian denials of civilian killings in Bucha. After Russia’s defence ministry described the evidence as staged on 3 April 2022, Human Rights Watch’s field investigation documented apparent executions and other unlawful killings through witness interviews, site inspections and imagery analysis. (hrw.org)

Covert campaigns aimed at Western audiences frequently impersonated news media rather than relying solely on openly identified Russian broadcasters. In September 2022, Meta removed a Russian-origin network operating more than 60 websites that copied legitimate news organizations and distributed anti-Ukrainian narratives through social media, advertisements and petitions. Meta subsequently linked the operation to the Russian companies Structura and Social Design Agency. On 4 September 2024, the United States Department of Justice announced the seizure of 32 domains associated with the campaign known as Doppelganger, alleging Russian government direction and efforts to weaken international support for Ukraine. The EU separately suspended RT and Sputnik broadcasting activities on 2 March 2022 through sanctions. (about.fb.com)

Independent verification required separating a recording’s location and date from claims about perpetrators, casualty totals or military significance. Bellingcat’s Ukraine monitoring project used open-source investigation to geolocate and chronolocate images, archive original material and map incidents of potential civilian harm. Its published methodology emphasized that confirming where an image was recorded did not by itself establish responsibility or prove a war crime. Researchers therefore combined online evidence with witness testimony and other records, while distinguishing verified incidents from the wider—and incompletely documented—scale of destruction. (ukraine.bellingcat.com)

Diplomatic negotiations, from Istanbul to 2026

At direct talks in Istanbul on 29 March 2022, Ukraine proposed permanent neutrality in exchange for legally binding international security guarantees. Its proposal excluded membership in military alliances and foreign military bases but permitted accession to the European Union. Prospective guarantors included the United States, United Kingdom, France, China, Russia and Turkey. They would undertake to assist Ukraine against renewed aggression, potentially through weapons deliveries, airspace protection and military intervention. Ukraine proposed negotiations over Crimea lasting 15 years, with both sides refraining from resolving its status by force; outstanding questions concerning Donbas were reserved for a presidential meeting. These were negotiating proposals, not a signed settlement. (investing.com)

Negotiations continued remotely during April, but the parties remained divided over territorial status and the operation of security guarantees. Kyiv increasingly sought separate agreements: a ceasefire with Russia and guarantees from other states. Moscow insisted on participating in the guarantee system and rejected negotiations over Crimea, while demanding recognition of the separatist entities in Donetsk and Luhansk. The discovery of civilian killings after Russia’s withdrawal from the Kyiv region further damaged the political conditions for compromise, although Ukrainian representatives initially continued negotiating. Russia’s failed northern offensive, expanding Western military assistance and the continuing siege of Mariupol also altered the negotiating context. By May 2022, the broader ceasefire talks had stopped without an agreed treaty. (swp-berlin.org)

Humanitarian bargaining nevertheless continued through channels distinct from negotiations over a political settlement. The United Nations and Turkey brokered the Black Sea Grain Initiative on 22 July 2022, establishing arrangements for commercial shipping and joint inspections rather than a general ceasefire; Russia discontinued participation in July 2023. Prisoner exchanges likewise remained possible despite continued fighting. Renewed direct talks in Istanbul on 16 May 2025 produced an agreement to exchange 1,000 people from each side. The exchange was implemented on 23–25 May and included military personnel and civilians, but did not resolve the disagreement over ceasefire terms. (unsdg.un.org)

The U.S.-led process in late 2025 concentrated on territorial arrangements and enforceable postwar security guarantees. At Berlin talks in December, President Volodymyr Zelenskyy met U.S. negotiators Steve Witkoff and Jared Kushner. On 15 December, European leaders outlined support for Ukrainian armed forces maintained at a peacetime strength of 800,000, a European-led multinational force supported by the United States, and a U.S.-led ceasefire monitoring and verification mechanism. They also proposed legally binding commitments, subject to national procedures, to respond to renewed aggression. At Donald Trump’s Mar-a-Lago residence in Florida on 28 December, Trump and Zelenskyy reported progress but acknowledged that Donbas remained unresolved. Russia demanded all of Donbas, including Ukrainian-held territory; Kyiv sought to freeze the existing battle lines. A U.S. proposal for a free economic zone left its practical operation unsettled. (investing.com)

Early 2026 brought two rounds of U.S.-brokered trilateral negotiations in Abu Dhabi, followed by talks in Geneva on 17–18 February. The Geneva meeting ended without a breakthrough on the principal political and territorial differences. On 19 March, Kremlin spokesman Dmitry Peskov described the interruption of trilateral negotiations as a “situational pause”, against the background of the Middle East conflict. On 20 March, he confirmed that Russia would not participate in the scheduled U.S.–Ukraine talks the following day and said that no venue had been established for another trilateral round. (apnews.com)

Witkoff and Kushner visited Moscow on 5 September 2026 and Kyiv on 6 September, seeking to restart the trilateral process. In Kyiv, their discussions included Zelenskyy, Ukrainian negotiators and security advisers from Britain, Germany and France. Witkoff subsequently reported progress toward scheduling further trilateral talks, while Peskov said that discussion of dates and a venue remained premature. The visits therefore reopened discussion of another meeting without establishing its schedule or producing a territorial settlement or agreed security guarantees. (osw.waw.pl)

Front lines and prospects for a settlement, 2026

In early October 2026, Russia’s principal offensive effort remained directed toward the “fortress belt” of Sloviansk, Kramatorsk, Druzhkivka and Kostiantynivka in Donetsk Oblast. These defended urban centres stood between Russian forces and the completion of Moscow’s territorial objectives in the oblast. The Institute for the Study of War (ISW) identified several interconnected approaches: an attempted northern envelopment through Lyman, pressure from the east, and attacks from the south and southwest toward Kostiantynivka and Dobropillia. Ukrainian counterattacks had eliminated the Russian salient north of Lyman by September, disrupting the northern arm of this manoeuvre. An assessment published on 8 October reported Russian transfers of additional drone and special-forces units toward the Sloviansk–Kramatorsk sector, citing a Ukrainian military official. (criticalthreats.org)

The front was therefore relatively static at the strategic level but remained contested locally. ISW estimated that Ukrainian forces had recovered more than 745 square kilometres across Donetsk, Dnipropetrovsk and Zaporizhzhia oblasts during winter and spring 2026. In the southern sector, Ukrainian counterattacks west and northwest of Orikhiv constrained Russian attempts to envelop the town; September assessments also recorded Ukrainian advances in western Zaporizhzhia Oblast. These gains did not amount to a general breakthrough, while Russian forces continued to make tactical gains around Kostiantynivka. The distinction between local movement and a decisive change in the war’s trajectory underlay contemporary descriptions of a stalemate. (criticalthreats.org)

Diplomatic positions remained incompatible. Russia sought Ukrainian withdrawal from territory in Donetsk Oblast that its forces had not captured, whereas Ukraine proposed a ceasefire along the existing front line. On 7 October, Russian Deputy Foreign Minister Sergey Ryabkov said that no further United States-mediated trilateral talks were then planned. On 8 October, United States Secretary of State Marco Rubio described the conflict as a dangerous stalemate; Kremlin spokesman Dmitry Peskov publicly agreed with that assessment. This did not constitute agreement on ceasefire terms. The September diplomatic initiative had produced acceptance in principle of a trilateral meeting, rather than a territorial settlement or an implemented cessation of hostilities. (kyivindependent.com)

Long-range attacks continued independently of the limited territorial movement. On 2 October, Russian aerial strikes forced full or partial closures of three Kyiv road bridges over the Dnipro, according to Mayor Vitali Klitschko. On 7 October, Ukraine’s air force reported an attack involving 130 drones, 48 cruise missiles and additional ballistic missiles; Ukrainian officials identified energy facilities among the targets. Ukraine meanwhile continued striking Russian oil facilities. Its Defence Ministry claimed on 5 October that attacks had disabled 51% of Russia’s refining capacity, a figure the Associated Press could not independently verify. Separately, on 1 October, Vladimir Putin acknowledged economic damage from refinery strikes, estimating losses at approximately 1% of GDP. That figure was a Russian presidential estimate, not an independently established measurement. (apnews.com)

Economic pressures and electoral timing featured in assessments of possible limited agreements. Reuters reported on 5 October that Russian oil and gas tax receipts for January–September had fallen 17% year-on-year, from 6.61 trillion to 5.47 trillion roubles, while the anticipated 2026 budget deficit was approximately 3% of GDP. Lower production, export disruption and a stronger rouble reduced the fiscal benefit of higher oil prices. (uk.marketscreener.com) A Ukrainian official cited by Axios suggested that the approaching United States midterm elections and Russia’s interest in sanctions relief might encourage a partial ceasefire. Volodymyr Zelenskyy said on 8 October that discussions with Washington included an energy and grain ceasefire. Such proposals concerned reciprocal limits on infrastructure and shipping attacks, rather than agreement over sovereignty or the final territorial boundary. (axios.com)

Official positions and legal characterization

Russia presented the invasion as a “special military operation” rather than a war against Ukraine. In his address of 24 February 2022, circulated to the United Nations as document S/2022/154, President Vladimir Putin described NATO’s eastward enlargement and military infrastructure as threats to Russian security. He invoked Article 51 of the UN Charter and requests for assistance from the Russian-recognized Donetsk and Luhansk entities as grounds for collective self-defence. His stated objectives included protecting Donbas residents from alleged genocide and achieving Ukraine’s “demilitarization” and “denazification”. These claims accompanied his historical argument, developed in a July 2021 essay, that Russians and Ukrainians constituted one people. They were Russian official justifications, not findings accepted by international institutions. In its provisional-measures order of 16 March 2022, the International Court of Justice stated that it possessed no evidence substantiating Russia’s allegation of genocide on Ukrainian territory. (documents.un.org)

Russia characterized its territorial annexations as lawful expressions of self-determination. Defending the incorporation of Donetsk, Luhansk, Zaporizhzhia and Kherson regions before the General Assembly on 12 October 2022, Russian representative Vassily Nebenzia invoked referendum results, the UN Charter’s self-determination principle and the precedent of Kosovo. The General Assembly rejected that interpretation in resolution ES-11/4, adopted the same day by 143 votes to five, with 35 abstentions. It declared the referendums and attempted annexations invalid under international law and called on states and international organizations not to recognize any resulting alteration of Ukraine’s territorial status. (russiaun.ru)

Ukraine based its position on sovereignty and territorial integrity within its internationally recognized 1991 borders, including Crimea. President Volodymyr Zelenskyy’s Peace Formula linked a lasting settlement to restoration of those borders and withdrawal of Russian forces; Ukrainian officials also demanded reversal of Russia’s annexation decisions. In January 2025, Zelenskyy reiterated that Ukraine would not recognize occupied territories as Russian. This position on legal title did not make complete withdrawal a prerequisite for every temporary cessation of fighting: on 11 March 2025, Ukraine accepted in principle a US proposal for an immediate, renewable 30-day ceasefire, conditional on Russian acceptance and concurrent implementation. The distinction was between suspending hostilities and legally conceding territory. (president.gov.ua)

The European Union and NATO members described Russia’s conduct as aggression and rejected its annexations. NATO’s July 2024 Washington declaration assigned Russia sole responsibility for the war and demanded complete, unconditional withdrawal. EU leaders reiterated in August 2025 that borders must not be changed by force and that Ukraine must participate in decisions concerning its future. The United States initially pursued similar language, co-sponsoring the February 2022 Security Council draft condemning Russian aggression. Under President Donald Trump, its diplomatic wording changed: on 24 February 2025, Washington supported Security Council resolution 2774, which called for a swift end to the conflict and lasting peace without assigning responsibility. It passed by ten votes to none, with five European members abstaining. (nato.int)

Institutional statements therefore differed in wording and legal function. Russia vetoed the condemnatory Security Council draft on 25 February 2022 despite eleven supporting votes. General Assembly resolution ES-11/1, adopted on 2 March by 141 votes to five, with 35 abstentions, characterized Russia’s action as aggression contrary to Article 2(4) of the Charter and demanded withdrawal. Such intergovernmental characterizations are distinct from establishing an individual’s criminal responsibility. Under Article 8 bis of the Rome Statute, the crime of aggression concerns leaders who plan, prepare, initiate or execute an act of aggression whose character, gravity and scale make it a manifest Charter violation. Prosecution requires proof of the individual elements and a competent tribunal; a resolution is not a criminal conviction. The International Criminal Court’s ordinary aggression jurisdiction excludes nationals of non-party states such as Russia, although a Security Council referral can provide a separate jurisdictional route. This restriction is distinct from the Court’s jurisdiction over war crimes committed in Ukraine. (press.un.org)

Effects on European security and neighboring states

Finland joined NATO on 4 April 2023, followed by Sweden on 7 March 2024, bringing the alliance to 32 members. Both reversed policies of military non-alignment after the invasion, extending NATO’s collective-defence framework across the Nordic region. The alliance also reinforced its eastern flank: in March 2022 it announced four additional multinational battlegroups in Bulgaria, Hungary, Romania and Slovakia, supplementing those in Estonia, Latvia, Lithuania and Poland. At the July 2023 Vilnius summit, allies approved new regional defence plans and confirmed arrangements to expand battlegroups to brigade strength where required. Prepositioned equipment, assigned reinforcement forces and higher readiness were intended to permit a faster, larger response to attacks on allied territory. (nato.int)

Defence budgets increased alongside these operational changes. On 27 February 2022, German chancellor Olaf Scholz announced a €100 billion special fund to modernise Germany’s armed forces. NATO’s annual report released in March 2026 recorded a 20% increase in European allies’ and Canada’s defence spending in 2025 compared with 2024, and reported that all allies had met or exceeded the earlier benchmark of 2% of GDP. At the June 2025 Hague summit, members committed to annual defence and security-related expenditure of 5% of GDP by 2035: at least 3.5% for core military requirements, with up to 1.5% for areas including critical infrastructure, resilience and industrial capacity. This was a future spending commitment, rather than a level already attained across the alliance. (bundesregierung.de)

The European Union increasingly used industrial policy to address ammunition shortages and fragmented procurement. In March 2024, the European Commission allocated €500 million under the Act in Support of Ammunition Production to expand manufacturing capacity, particularly explosives and propellant production. Its stated objective was capacity for two million shells annually by the end of 2025, not a guarantee of actual production or deliveries to Ukraine. On 27 May 2025, the Council adopted Security Action for Europe, providing up to €150 billion in loans for defence investment, principally through joint procurement. The mechanism sought to aggregate orders and give manufacturers more predictable demand for expanding production. (defence-industry-space.ec.europa.eu)

Neighboring states assumed different security roles. Belarus provided territory for Russia’s February 2022 attack and subsequently hosted Russian forces and military infrastructure; Alexander Lukashenko’s government also supported Russian military production and hosted Russian nuclear weapons, without contributing its own troops to combat in Ukraine. Poland hosted a major logistics hub for assistance to Ukraine and the NATO–Ukraine Joint Analysis, Training and Education Centre in Bydgoszcz, inaugurated in February 2025 to incorporate wartime lessons into training and planning. In Moldova, EU support focused on military modernisation, crisis management, cybersecurity and resistance to information manipulation. By July 2025, the EU had allocated €197 million through the European Peace Facility during 2021–2025; EU and Moldovan leaders also called for Russian personnel and ammunition to leave Transnistria. (apnews.com)

Regional energy-security measures included changes to the operation of the electrical grid, beyond the wider reduction in dependence on Russian fuel. On 9 February 2025, Estonia, Latvia and Lithuania synchronised their electricity systems with continental Europe after disconnecting from the Russian-controlled synchronous system. The project received more than €1.23 billion in EU Connecting Europe Facility grants. Moldova likewise pursued closer integration with the EU energy market, supported by European assistance during its 2025 energy crisis. (data.consilium.europa.eu)

Refugee reception produced a parallel shift in European migration policy. The EU activated its temporary-protection mechanism in March 2022, allowing eligible displaced people to obtain residence, employment, education, medical care and housing support without first completing individual asylum procedures. By 31 July 2026, 4.43 million people displaced from Ukraine held temporary protection in the EU; the mechanism had been extended until 4 March 2028. EU cohesion and recovery funding rules were adapted to help receiving communities finance accommodation, schools, healthcare and childcare, with approximately €17 billion identified for possible reallocation when the invasion began. (consilium.europa.eu)

Casualties, refugees, and disputed statistics

Military casualty figures distinguish deaths from broader totals that include wounded and missing personnel. A January 2026 study by Seth G. Jones and Riley McCabe of the Center for Strategic and International Studies (CSIS) estimated that, between February 2022 and December 2025, Russian forces suffered approximately 1.2 million casualties, including 275,000–325,000 deaths, and Ukrainian forces 500,000–600,000 casualties, including 100,000–140,000 deaths. The assessment combined British government estimates, open-source investigations and interviews with American, European and Ukrainian officials; these were analytical estimates rather than individually verified counts. A July 2026 CSIS update estimated Russian losses through June at 1.4 million casualties and up to 450,000 deaths. Different reporting periods and definitions therefore prevent direct comparison of many published totals. (csis.org)

Official disclosures and named-death investigations measure different things. On 4 February 2026, President Volodymyr Zelenskyy stated that Ukraine had officially recorded 55,000 military personnel killed on the battlefield, while acknowledging a substantial number missing. This was considerably below the CSIS estimate, but neither figure constituted a complete public register. On 24 February, Mediazona and BBC Russian reported approximately 200,000 individually confirmed Russian military deaths. Their investigation used obituaries, relatives’ notices and official records, supplemented by leaked civil-registration data. Mediazona described its count as a minimum: the leaked database ended in early 2025, many certificates omitted the place of death, and verification backlogs delayed inclusion. The addition of 23,000 names over ten days illustrated how a sudden increase in a published tally could reflect newly processed evidence rather than deaths during that interval. (kfgo.com)

The United Nations Human Rights Monitoring Mission in Ukraine (HRMMU) records verified civilian deaths and injuries separately from military losses. By February 2026 it had verified more than 15,000 civilian deaths and 41,000 injuries since the full-scale invasion. For 2025 alone, it recorded 2,514 killed and 12,142 injured, a combined total 31% above 2024; 97% of these verified casualties occurred in Ukrainian government-controlled territory from Russian attacks. Its September 2026 update recorded at least 372 civilians killed and 2,349 injured during August. Verification draws on witness interviews, medical and forensic records, photographs, videos and other corroborating material. These counts are not estimates of the complete toll: inaccessible locations, particularly places devastated early in the invasion such as Mariupol, remain undercounted. Later reports also incorporate casualties from earlier periods when supporting evidence becomes available. (ukraine.ohchr.org)

Displacement statistics likewise depend on date, geographical coverage and administrative category. UNHCR’s year-end 2025 reporting identified approximately 5.9 million refugees from Ukraine worldwide, including 5.3 million in Europe, alongside 3.7 million people displaced within Ukraine. Eurostat recorded 4.41 million non-EU citizens who had fled Ukraine and held temporary-protection status in the European Union on 30 June 2026. This narrower legal-status count excludes refugees in non-EU countries and does not encompass every Ukrainian living abroad. Consequently, UNHCR’s regional refugee figures and national protection registers describe overlapping, rather than identical, populations. (unhcr.org)

For internally displaced persons, household surveys and government registration produce different totals. The International Organization for Migration estimated approximately 3.7 million people still internally displaced in December 2025. Ukraine’s administrative register, cited in a January 2026 OECD study, contained 4.64 million registered displaced persons at the beginning of 2025, compared with 1.48 million before the full-scale invasion. Registration can persist after a person returns home or moves abroad; the OECD identified this as a principal reason registered totals exceeded estimates of actual displacement. Neither a protection registration nor an internal-displacement registration necessarily establishes a person’s current residence. (crisisresponse.iom.int)

The consequences for demography extend beyond directly recorded deaths. UNFPA reported 176,700 births registered in Ukraine in 2024, 35% fewer than in 2021, and projected fertility of approximately 0.9 children per woman. Displacement has also altered the age structure: the departure of women, young people and children contributes to population ageing in the communities they leave. Population estimates remain unusually uncertain because Ukraine’s last census was conducted in 2001. UNFPA has therefore combined older census information with civil registration, migration records and geospatial data. Birth registrations, projected fertility and resident-population estimates are distinct measures; wartime population decline cannot be interpreted simply as a count of deaths. (ukraine.unfpa.org)

Unresolved questions

A territorial settlement must distinguish between a ceasefire line and legal recognition of sovereignty. On 14 June 2024, Vladimir Putin demanded Ukrainian withdrawal from the entire administrative territories of Donetsk, Luhansk, Zaporizhzhia and Kherson oblasts, including areas Russia had not occupied, and abandonment of Ukraine’s NATO ambitions; his broader conditions included recognition of Crimea as Russian territory. These demands therefore extended beyond freezing existing military positions. Volodymyr Zelenskyy subsequently indicated that negotiations over occupied territory could follow a ceasefire, while maintaining that Ukraine would not legally recognize Russian ownership. The unresolved distinction is whether military control could remain provisional without changing internationally recognized borders, rather than whether a cessation of fighting would itself settle the status of Donetsk, the southern oblasts or Crimea. (apnews.com)

Security arrangements raise separate questions about enforcement, foreign deployments and alliance membership. The declaration signed by Ukraine, France and the United Kingdom on 6 January 2026 envisaged a multinational force after a ceasefire. On 13 July, the Coalition of the Willing’s co-chairs reaffirmed proposed politically and legally binding guarantees, activated once a ceasefire entered into force, alongside long-term support for Ukrainian forces. They described a force operating on land, at sea and in the air at Ukraine’s request. These arrangements are distinct from NATO membership: the alliance’s stated accession framework requires agreement among allies and fulfillment of conditions, whereas Article 5 applies to members. Russia’s opposition to foreign troops adds an unresolved obstacle concerning deployment consent and protection against renewed hostilities. (gov.uk)

Accountability depends on more than establishing jurisdiction. The International Criminal Court has issued arrest warrants concerning alleged crimes in Ukraine, but has no police force and relies on state cooperation to arrest suspects. A separate institutional track addresses the crime of aggression through the Council of Europe–Ukraine agreement establishing a special tribunal and its subsequent management arrangements. Criminal proceedings determine individual responsibility; compensation mechanisms address damage suffered by individuals, businesses and the state. The convention establishing an International Claims Commission opened for signature on 16 December 2025. As of 6 October 2026, it had 41 signatories, but only ten states and the European Union had ratified it; entry into force requires 25 ratifications and sufficient initial financial commitments. Creating a claims procedure thus does not itself secure either criminal enforcement or compensation payments. (icc-cpi.int)

The future use of immobilized Russian assets involves a distinction between the underlying reserves and income generated while they remain blocked. Approximately €210 billion in Russian central bank assets were immobilized in the EU. Rules adopted on 25 October 2024 allocated 95% of extraordinary revenues to a mechanism supporting repayment of approximately €45 billion in EU–G7 loans to Ukraine, with the remaining 5% allocated to the European Peace Facility. On 12 December 2025, the EU prohibited transfers of the immobilized assets back to Russia on a temporary basis. These measures provide financial support without constituting a comprehensive transfer of the principal into a reparations fund; the European Council’s stated position links continued immobilization to Russia ending the invasion and compensating Ukraine. (consilium.europa.eu)

Reconstruction requirements are substantially larger than direct physical damage. The fifth joint assessment by Ukraine, the World Bank, European Commission and United Nations, published on 23 February 2026, estimated recovery and reconstruction needs at nearly $588 billion over ten years, measured through 31 December 2025. Financing these needs remains separate from determining compensation liability. The Zaporizhzhia nuclear plant also presents operational questions beyond territorial control: reliable external electricity is necessary for cooling and other safety functions even when reactors are shut down. A settlement concerning the facility therefore has to address practical nuclear safety as well as authority over the site. (worldbank.org)

The return of displaced people cannot be treated as an automatic consequence of a ceasefire. UNHCR identifies voluntary, informed decisions and return in safety and dignity as essential principles, while its Ukraine return-information system addresses housing compensation, employment, education and access to services. Its 2026 reporting links gradual voluntary returns to conditions permitting sustainable recovery. These requirements intersect with property compensation and territorial authority: ending hostilities, adjudicating losses and enabling residents to resume their lives are different processes. Likewise, the European security arrangements under discussion explicitly connect protection against renewed aggression with stability in Europe, making the enforceability of any settlement a question extending beyond the immediate ceasefire line. (help.unhcr.org)

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