The chief of Russia's general staff told President Vladimir Putin on Thursday that Russian forces had taken control of the northeastern Ukrainian city of Kupiansk, but Ukraine's military denied the city had changed hands.

A senior US official says President Trump supports the plan and both Russia and Ukraine have to make concessions.

The UK has identified which military units it would send to Ukraine after a series of reconnaissance visits in the country, ensuring it would be ready to swiftly deploy troops if the latest effort to revive peace talks succeeds.

Oil prices edged higher on Thursday, recovering from losses in the previous session, as markets assessed the latest U.S. proposals to end the war in Ukraine and prepared for a U.S. deadline to cease operations with two major Russian oil firms.

Ukraine plans to seek nearly $44 billion in climate damages from Russia for emissions caused by the ongoing war.