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.

Russia will announce who is attending proposed peace talks in Turkey on ending the war in Ukraine when President Vladimir Putin sees fit to, the Kremlin said on Tuesday, declining to say at this stage whether or not Putin will attend himself.

US President Donald Trump said he was open to attending the potential peace talks between Russia and Ukraine in Turkey on Thursday, as the US ramps up pressure on Moscow and Kyiv to bring an end to the three-year conflict.