Donald Trump has presented a new, shorter deadline for Russia to agree to a ceasefire over the war in Ukraine of "ten or 12 days" from Monday. The US president said there was "no reason" in waiting any longer as no progress towards peace had been made.

Russia and Ukraine discussed further prisoner swaps on Wednesday at a brief session of peace talks in Istanbul, but the sides remained far apart on ceasefire terms and a possible meeting of their leaders.

Donald Trump has given Russia a shorter window of 10 to 12 days to agree a ceasefire in Ukraine or face tighter sanctions, as his frustration with his Russian counterpart escalates.

Russian and Ukrainian negotiating teams will again meet in Istanbul, Turkey, on Wednesday, Ukrainian President Volodymyr Zelenskyy confirmed, for the first such meeting since President Donald Trump set a 50-day deadline for a ceasefire to be reached.

Russia and Ukraine discussed further prisoner swaps on Wednesday at a brief session of peace talks in Istanbul, but the sides remained far apart on ceasefire terms and a possible meeting of their leaders.

The warring sides remain far apart after the third round of U.S.-brokered peace negotiations on Wednesday. But there was progress on humanitarian issues.

Others with a stake in Ukraine’s security and relations with Russia must stay engaged too, argues the Nobel Peace Prize winner

Oil prices rose 2% on Monday after a trade deal between the U.S. and the European Union, and U.S. President Donald Trump's announcement that he would shorten the deadline for Russia to end its war in Ukraine or face sanctions.