After a Vatican rendezvous with President Donald Trump and Ukrainian President Volodymyr Zelensky on Saturday, Trump's rhetoric towards the European leader seemed to mellow. On Sunday, he described Zelensky as "calmer" and more amenable to negotiating peace to halt the conflict with Russia.

Trump's comment follow Ukrainian officials rejecting a U.S. proposed peace deal that would see Russia continue to have authority territory in the Crimean Peninsula

US President Trump urged Russia to halt its attacks on Ukraine while expressing optimism about peace talks with Ukraine's President Zelenskiy. Trump warned that the US could withdraw from negotiations if progress isn't made,