Ukraine says Operation Vivaldi has retaken about 175 sq km around Lyman

10 October 2026

Ukraine's counter-offensive in the Donetsk region, named Operation Vivaldi, has retaken about 175 sq km around the town of Lyman, according to a review of the week to 8 October 2026. President Volodymyr Zelenskyy described the operation as successful but incomplete. Russia had hoped to use Lyman as a springboard towards Sloviansk and Kramatorsk; the village of Kryva Luka, east of Sloviansk on the Siversky Donets river, is seen as the next key point. A bomb struck two city buses in Kramatorsk on 8 October, killing at least 30 people. Ukraine's military put Russian casualties in September at 46,230, a record for 2026, of which it said more than 70 per cent, or 33,087, were confirmed killed. The Institute for the Study of War, which tracks territory from open sources, assessed that Russia lost 80 sq km of ground during September.