Donetsk Sector

• Donetsk Oblast remains the war's primary front of active Russian offensive effort and the sector where tactical change has been most significant since late 2023; after the fall of Avdiivka in February 2024 — a fortified Ukrainian position that Russia besieged for months at enormous cost before finally overwhelming — Russian forces advanced from the Avdiivka salient westward toward the critical logistics hub of Pokrovsk, which by February 2026 stands approximately 8–12 km from Russian forward positions and faces ongoing pressure; Pokrovsk serves as a critical rail and road junction for Ukrainian supply to the entire central Donetsk frontline, and its loss would require significant Ukrainian logistics restructuring for the entire sector; Ukrainian forces have constructed multiple defensive lines west of Pokrovsk and are fighting to delay Russian approach along the Pokrovsk highway axis
• Toretsk–Chasiv Yar axis: simultaneously, Russia has pressed advances on the Toretsk (formerly Dzerzhynsk) and Chasiv Yar axes northwest of the Bakhmut ruins; Chasiv Yar sits on elevated terrain overlooking Kostiantynivka, and its fall would give Russia commanding observation over a significant stretch of the Ukrainian rear; Ukrainian forces have contested every industrial structure and urban block in Chasiv Yar since March 2024; Russian advance there has been measured in hundreds of metres per week but is cumulatively significant; as of February 2026 Russian forces have penetrated the western districts of Chasiv Yar while Ukrainian defenders hold the central and elevated sections
• Vuhledar aftermath: the fall of Vuhledar in October 2024 — a fortified hilltop town where Russia's forces had suffered catastrophic preliminary assault losses before ultimately capturing it — gave Russia road access through southern Donetsk Oblast that had previously been denied; Russian forces have used the Vuhledar axis to advance toward Kurakhove, which fell in January 2025, and are pressing further toward Velyka Novosilka in what could become a southern pincer complementing the western Pokrovsk push in threatening the depth of Ukrainian defence in central Donetsk

Zaporizhzhia Sector

• The Zaporizhzhia sector — the front running from the Robotyne area in the north toward Tokmak and Melitopol — has remained relatively static compared to Donetsk since the collapse of Ukraine's 2023 summer counteroffensive that failed to breach the prepared defensive lines between the Orikhiv area and Tokmak; Russian forces have conducted incremental attacks to recover Ukrainian gains made during the counteroffensive and have made gradual progress, particularly around Robotyne which changed hands multiple times; the overall front displacement has been small — a few km on both sides — but the Ukrainian bridgehead south of Robotyne, which Ukraine held as a potential penetration point, has been under constant Russian pressure to eliminate
• Zaporizhzhia Nuclear Plant front: the front line in Zaporizhzhia Oblast runs approximately 5–8km from the Zaporizhzhia Nuclear Power Plant (ZNPP), which remains under Russian occupation and has been operating in cold shutdown since autumn 2022 after repeated grid disconnections; both sides maintain artillery positions that in principle could reach the plant, and every artillery exchange in the area generates international concern about nuclear safety; the ZNPP sector has been a de facto constraint on tactical manoeuvre by both sides given the catastrophic reputational cost of any weapons impact on plant structures

Kherson Sector

• The Kherson front runs along the Dnipro River following Ukraine's liberation of the right bank (including Kherson city) in November 2022; Russian forces hold the left bank (east bank) and have established defensive positions in the villages and fields of Kherson Oblast east of the river; the front is a river line rather than a land contact line, making it fundamentally different from other sectors — river crossings under fire are among the most difficult military operations, and neither side has the resources or tactical conditions to profitably attempt a major crossing; small-scale Ukrainian operations have established bridgehead positions in villages on the east bank near Krynky and Kozachi Laheri, but maintaining these positions across the river under Russian air, artillery, and FPV drone attack has proven extraordinarily costly for Ukraine with limited strategic return
• Kherson city vulnerability: Kherson city, liberated and still inhabited by reduced but civilian population, lies within easy artillery range of Russian positions on the east bank; Russia has continued systematic shelling of Kherson city throughout 2023–2026, making it one of the most consistently struck frontline cities in the war despite its civilian population; agricultural Kherson Oblast on the Ukrainian side continues to face drone and artillery strikes that disrupt farming and force partial depopulation of villages near the riverline

Kharkiv and Sumy Sector

• The Kharkiv Oblast sector saw significant Russian operational activity in May 2024 when Russia opened a new northern front from Russian Belgorod Oblast, advancing southward toward Vovchansk in what appeared to be either an attempt to capture territory or a fixing operation to force Ukraine to redeploy reserves from other fronts; Vovchansk was partially captured by Russian forces and fighting in that town became a months-long grinding urban battle; by early 2025 the Vovchansk fighting had stabilised with Russia holding parts of the town and Ukraine contesting others, and the front in that sector had not advanced significantly toward Kharkiv city; the offensive's principal operational effect was forcing Ukraine to commit reserves to the northern axis that it had intended for use elsewhere
• Kharkiv city: Ukraine's second-largest city, with a pre-war population of 1.4 million reduced to an estimated 900,000–1 million under wartime conditions, remains within Russian artillery range from the Belgorod border and has been struck by glide bombs, cruise missiles, and guided aerial bombs throughout the war; the city's continued function — with significant Dnipro-area industrial production and the Kharkiv IT hub operating partly remotely — is a testament to Ukrainian urban resilience but its proximity to uncontrolled Russian border territory represents a persistent vulnerability that limits full economic recovery in the region

Kursk Oblast

• Ukraine's August 2024 cross-border incursion into Russian Kursk Oblast — the first foreign military occupation of Russian sovereign territory since World War II — captured approximately 1,000–1,300 square km of Russian territory at its peak, including the town of Sudzha and numerous villages, before Russian counterattacks including DPRK troops progressively reduced the Ukrainian foothold through late 2024 and into 2025; by February 2026 Ukraine retains a small residual presence in Kursk Oblast — approximately 50–100 square km — that has military value for cross-border fire control and political value as leverage in any potential negotiations, but is far reduced from the peak incursion footprint
• Strategic effect of Kursk incursion: the Kursk operation achieved several of its likely strategic objectives — forced Russia to deploy forces from Ukrainian fronts to counterattack, demonstrated Ukrainian capability for offensive operations inside Russia that Russian civil defence must now permanently consider, provided leverage cards in any negotiation scenario, and rallied Ukrainian domestic and international morale at a moment of difficult frontline news from Donetsk; the cost — substantial Ukrainian forces and equipment committed to an offensive operation inside Russia rather than defensive operations in Ukraine — was a genuine opportunity cost that military analysts continue to debate

Overall Operational Balance

• The overall operational balance in February 2026 favours Russia in terms of tactical initiative and the current rate of territorial change — Russia is gaining approximately 150–250 square km of Ukrainian territory per month across all sectors through grinding attrition, a rate that is slow by historical standards for a major war but cumulatively significant; at this rate Russia would reach operationally significant targets (Pokrovsk, Kostiantynivka, Sloviansk) within 12–18 months absent major changes; Ukraine is fighting effectively defensively — Russian gains are costly in personnel and equipment terms at rates that Ukrainian and Western analysts assess as unsustainable for Russia long-term but which Russia appears to be accepting as the price of strategic patience
• Casualty asymmetry debate: estimates of Russian casualties are subject to significant uncertainty but Western and Ukrainian intelligence consensus suggests Russia has suffered an estimated 400,000–500,000 personnel casualties (killed and wounded combined) through February 2026; Ukrainian casualties are estimated at approximately 100,000–150,000 killed and 200,000–350,000 wounded; the 3–4:1 unfavourable ratio for Russian casualties reflects tactical conditions (attackers pay higher immediate costs) but Russia's larger initial manpower reserve and mobilisation capacity has allowed it to absorb these losses and maintain offensive pressure

Territorial Trends and Projections

• Territorial change in 2025 amounted to approximately 2,500–3,000 square km of Russian net gains across all sectors — smaller than 2022's large early swings in either direction but larger than 2023's approximately 500 square km of Russian net gain after accounting for Ukrainian counteroffensive gains and subsequent Russian recovery; the 2025 pace substantially exceeded the 2023 pace, reflecting the cumulative weakening of Ukrainian defensive depth from ammunition shortages, manpower pressures, and the glide bomb-enabled Russian assault methods that progressively destroy prepared defensive positions
• Ceasefire scenario territorial baseline: if negotiations were to produce a ceasefire along current front lines, Russia would retain approximately 18–19% of Ukraine's internationally recognised territory including all of Luhansk Oblast and most of Donetsk, Zaporizhzhia, and Kherson Oblasts; the front line as of February 2026 represents a significantly worse negotiating position for Ukraine than the immediate post-Kherson liberation lines of late 2022, which is one reason Ukrainian and most European governments have resisted Western pressure for a ceasefire that would lock in current Russian territorial gains

Frequently Asked Questions