Russian President Vladimir Putin said on Friday that Moscow hoped for more peace talks with Ukraine but that the momentum of the war was in its favour, signalling no shift in his stance despite a looming sanctions deadline from Washington.

The move means Trump is walking back the 50-day deadline he set this month in response to Russia's continued bombing of Ukrainian cities.

"I'm going to reduce that 50 days that I gave him to a lesser number," Trump said as he met British Prime Minister Keir Starmer.