Trump called Putin 'crazy' over the weekend and said May 27 he's 'playing with fire' as he continues to bombard Ukraine during peace negotiations.

But in recent weeks, the relationship has begun to show signs of strain.

Trump previously said his personal relationship with Putin would usher in peace for Ukraine. Now, he says Putin's gone "absolutely CRAZY!"

Charlamagne Tha God said this week that President Donald Trump and Russian President Vladimir Putin's egos could bring about "the end of civilization as we know it." Newsweek reached out to the White House for comment via email.

President Donald Trump on Tuesday signaled that his patience with Vladimir Putin is running thin, warning the Russian leader that he is “playing with fire” by refusing to engage in serious peace talks about ending the war in Ukraine.

All-Star’ panelists Josh Kraushaar, Kimberley Strassel and Juan Williams discuss President Donald Trump warning Russian President Vladimir Putin he is ‘playing with fire’ on ‘Special Report.’

President Donald Trump has warned Vladimir Putin that he is "playing with fire," just days after he blasted the Russian leader for launching a major drone strike against Ukraine. "What Vladimir Putin doesn't realize is that if it weren't for me,