Ukrainian President Volodymyr Zelenskiy said on Sunday that a ceasefire with Russia in its more than three-year-old war was possible at any moment and called on Kyiv's allies to apply greater pressure on Moscow to put the measure in place.

President Trump "wants to see a permanent ceasefire first, to stop the killing, stop the bloodshed," press secretary Karoline Leavitt said.

Ukraine and Russia are at odds over competing ceasefire proposals. Moscow has accused Ukrainian President Volodymyr Zelenskyy of threatening the safety of dignitaries attending Victory Day celebrations after he dismissed Russia’s unilateral 72-hour ceasefire.