- Lead. Russia’s territorial advance in Ukraine collapsed in the first half of 2026, slowing to one-sixteenth of its 2025 pace while monthly casualty figures exceeded the number of fresh recruits entering the line.
- Fact. June 2026 produced an estimated 39,490 Russian casualties — the highest single-month toll since February 2022 — at a cost of 1,298 killed or wounded per square kilometre of territory captured.
- Stake. At the current rate, analysts calculate it would take fourteen years to capture the remaining 20% of Donetsk that Russia claims as its territorial objective.
Russia’s ground campaign in Ukraine has entered its least productive phase since the initial offensive in 2022. Data compiled by the Center for Strategic and International Studies and analysed by Al Jazeera show that the first half of 2026 produced net territorial gains of just 97 square kilometres — a fraction of the 2,190 square kilometres Russia captured in the corresponding period of 2025.
The numbers behind the collapse
Russia’s advance averaged 1.03 square kilometres per day in June 2026, compared with 16.6 square kilometres per day across the first half of 2025. Gross captures in the first half of 2026 reached 622 square kilometres, but Ukrainian counter-advances erased most of those gains: Russia suffered net territorial losses in both April and May, its first monthly net reverses since August 2024.
The casualty figures tell a parallel story of attrition. CSIS estimates total Russian battlefield losses since February 2022 at approximately 1.4 million, including an estimated 450,000 killed. In June alone, Ukraine’s military recorded 39,490 Russian casualties — a rate that now exceeds Russia’s monthly recruitment capacity of 24,000 to 30,000 new soldiers. The cost-efficiency calculation has deteriorated sharply: Russia spent roughly 68 casualties per square kilometre captured in June 2025; in June 2026 that figure had risen to 1,298.
Ukraine’s long-range campaign
The battlefield arithmetic has been reshaped in part by Ukraine’s sustained long-range strike programme. Ukrainian forces conducted 303 mid-range strikes in June 2026, up from 210 in May, targeting Russian refineries, ammunition production facilities, and communications infrastructure deep inside Russian territory. Ukraine’s 40-day pressure campaign, which launched with a record 660-drone barrage in late June, has forced Russia to divert air-defence resources from the front line, reducing its ability to protect advancing troops.
President Volodymyr Zelenskyy, responding to Russian statements about continued offensive intent, said: “If Putin wants to send another million of his soldiers…these million Russians…should think about what awaits them.”
Pressure inside Russia
The casualty toll is beginning to register inside Russia. Independent Russian demographers tracking regional death notices report a marked acceleration in notifications from oblasts that supply the majority of contract soldiers. State media has increasingly restricted reporting on frontline conditions, and two regional governors have publicly requested additional federal compensation for families of soldiers killed in June.
Putin has rejected two ceasefire proposals from Kyiv since May. NATO’s Ankara summit, scheduled for July 7 and 8, is expected to produce fresh commitments on military aid to Ukraine, including pledges tied to the 5% GDP defence spending target that several member states endorsed in June. The battlefield data released this week will shape the terms of that discussion.