As talks are set to take place in Turkey this week, President Donald Trump has hinted he might join, saying casually, "I was thinking about flying over".

President Vladimir Putin said, according to a translation by the BBC: "We are determined to have serious negotiations with Ukraine. The purpose is to eliminate the root causes of the conflict and establish long-term, lasting peace with a historical perspective.

By Tom Balmforth, Yuliia Dysa and Steve Holland KYIV/WASHINGTON (Reuters) -U.S. President Donald Trump offered on Monday to join prospective Ukraine-Russia talks in Turkey later this week as European countries pushed to get the Kremlin to accept their demand for a 30-day ceasefire in the war in Ukraine.