British Defence Intelligence Update Ukraine 17 September 2025

Latest from the British Defence Intelligence.

  • The logistics hub of Pokrovsk remains the focal point for Russian offensive operations. Pokrovsk is an important defensive lynchpin, constraining Russian advances in the wider Donetsk oblast and towards the Ukrainian cities of Kramatorsk and Sloviansk, both of which are also Russian objectives.
  • Major elements of Russia’s Naval Infantry have been transferred from Russia’s Kursk region and Ukraine’s Sum region to the Pokrovsk-Dobropillia axis, where they have started to conduct offensive activity in small groups.
  • The Ukrainian logistics hub of Lyman, also in Donetsk, remains a Russian objective, having previously been retaken by Ukrainian forces in a September 2022 counterattack. Russian forces have taken the majority of the Serebriansk forest to the south east of Lyman, and are consolidating territory along the Siverskyi Donets river.
  • Russian forces have consolidated control over sectors of the areas bordering Dnipropetrovsk oblast and Donetsk oblast. Most of these border areas are likely still contested by Ukrainian forces. However in the vicinity of the village Sosnivka, Russian forces have advanced approximately 10 km further into Dnipropetrovsk on a narrow front.