Sources tell NBC News President Trump discussed U.S. and NATO-like security guarantees for Ukraine as part of a possible permanent peace deal with Russia on his way back from his summit with Russian President Putin.

In a shift, Trump now aligns more closely with Putin than allies in Europe in calling for final talks before a ceasefire

The U.S. president declared Saturday that he would forego his previous demand for an initial ceasefire, making it easier for Putin to continue the war and dictate terms of a peace agreement at gunpoint.