U.S. President Donald Trumpis expected to speak with his Russian counterpart Vladimir Putinthis week on ways to end the three-year war in Ukraine, U.S. envoy Steve Witkoff told CNN on Sunday after returning from what he described as a "positive" meeting with Putin in Moscow.

Ukrainian President Volodymyr Zelenskyy accused Russian President Vladimir Putin of "prolonging the war" and "ignoring" U.S.-led efforts to agree a ceasefire.

Special envoy Steve Witkoff said he expects the discussion to be "positive" and a ceasefire to come soon in the war between Russia and Ukraine.