Russian President Vladimir Putin told U.S. President Donald Trump in a phone call on Thursday that Moscow wants a negotiated end to the Ukraine war but will not step back from its original goals, a Kremlin aide said.

Russia unleashed a massive drone attack on the Ukrainian capital, hours after US President Donald Trump expressed frustration at failing to make any progress toward ending Moscow’s war on Ukraine during a call with his Russian counterpart Vladimir Putin.

Are Russia's most advanced fighter-bombers actually safe, even hundreds of miles from the combat zone? The recent Ukrainian drone attack on Marinovka airfield reopened controversy over Russia's much-touted Su-34 fleet vulnerability and the revamping balance of air power in Eastern Europe.