The presidents of Ukraine and Russia are expected to be briefed this week on outcomes of Sunday's U.S.-Ukraine talks.

Russian President Vladimir Putin has claimed without evidence that Russian forces have taken control of Ukrainian cities Pokrovsk and Vovchansk.

These are the key developments from day 1,377 of Russia’s war on Ukraine.

Both vessels are on a list of ships subject to sanctions imposed against Russia following its full-scale invasion of Ukraine.

Ukraine has launched a restructuring of $2.6bn of growth-linked debts that are seen as key to financing its war effort and which had threatened to drain billions of dollars from Kyiv’s postwar finances.

Ukraine launched an offer to investors to swap $3.2 billion of complex and costly GDP warrants for international bonds on Monday, the government said, as it attempts to clear a major remaining hurdle in its push to emerge from sovereign default.