MOSCOW, Dec 2 - U.S. President Donald Trump's special envoy, Steve Witkoff, and son-in-law Jared Kushner were due to meet Russian President Vladimir Putin on Tuesday for talks on a possible way to end the war in Ukraine.

Trump has said he wants to end Europe's deadliest conflict since World War Two but his efforts so far, including a summit with Putin in Alaska in August and meetings with Ukrainian President Volodymyr Zelenskiy, have not yet brought peace.