Ukraine rallied support from its Western allies on Friday after Kyiv and Moscow failed to agree to a ceasefire at their first direct talks in more than three years, with Russia presenting conditions that a Ukrainian source described as "non-starters".

Russia and Ukraine are due to hold their first direct peace talks in three years Friday, gathering in Istanbul for Turkish-brokered negotiations, but officials and observers expect them to yield little immediate progress on stopping the more than 3-year war.

Russian and Ukrainian negotiators will meet in Istanbul on Friday for their first peace talks in more than three years as both sides come under pressure from U.S. President Donald Trump to end Europe's deadliest conflict since World War Two.