U.S. President Donald Trump said he still believes Russian President Vladimir Putin is ready to strike a deal to end the war in Ukraine, but warned that if negotiations fail, his administration will move forward with sanctions against Moscow.

Zelensky sends Ukrainian delegation to Istanbul, as peace talks with Russia are expected on May 16 Trump expects no progress in Russia-Ukraine peace talks until he meets Putin Pro-Ukraine partisans sabotage railway track near Russia's Smolensk Ukraine shows its latest 'ship-killer' Magura drone series to the public for the first time US proposes reviving NATO-Russia Council,

In this handout photo released by Turkish Presidency, Turkish President Recep Tayyip Erdogan, right, shakes hands with his Ukrainian counterpart Volodymyr Zelenskyy during their meeting at the Presidential palace in Ankara,