Charles Maynes

Officials from Russia and Ukraine in Istanbul on Monday failed to reach a ceasefire but agreed to exchange more prisoners.

For several days now, President Trump has expressed growing frustration with Russian President Vladimir Putin over the slow progress towards ending the war in Ukraine.

President Trump spoke with Russian President Vladimir Putin for more than two hours on Monday and claimed progress toward ending the war in Ukraine. But Putin did not agree to an immediate ceasefire.

President Trump is working the phones on Monday, holding calls with the leaders of Russia, Ukraine and other European countries as he continues efforts to negotiate an end to the war in Ukraine.

The negotiations took place a day later than planned amid low expectations for a breakthrough, after Russian President Vladimir Putin and President Trump opted not to go to Turkey.

Representatives from Russia and Ukraine will gather in Turkey on Thursday for negotiations — their first since the early months of the Kremlin's full-scale invasion in 2022.

There are lots of unknowns ahead of potential direct talks between Russia and Ukraine in Turkey.

Russian President Vladimir Putin welcomed the leaders of China and Brazil to commemorate the anniversary.

Russia declared a three-day ceasefire in Ukraine starting May 8 for the anniversary of the Soviet Union's victory over Nazi Germany. Ukraine called for an immediate, 30-day truce instead.

President Trump called on Russia and Ukraine to hold high-level negotiations to end the war, saying that talks toward a deal have gone well.