He [President Donald Trump] believes he is increasingly frustrated with the leaders of both countries [Ukrainian President Volodymyr Zelenskyy and Russian dictator Vladimir Putin]. He wants to achieve a permanent ceasefire.

Russian President Vladimir Putin on Monday declared a unilateral three-day ceasefire in Ukraine next month, a move met with skepticism by Ukrainian officials who demanded the Kremlin leader immediately accept a longer truce proposal from the United States that he has so far rejected.

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