Russian media have been reacting to Trump's growing criticism of Putin, the most recent being on Tuesday when he accused the Russian leader of peddling "bulls***" over his intentions in Ukraine, after rejecting U.S. ceasefire proposals.

The Kremlin said on Wednesday that it was not sure of the veracity of a CNN article that reported U.S. President Donald Trump had once threatened to bomb Moscow to deter Russian President Vladimir Putin from attacking Ukraine.

Donald Trump told a private gathering of donors last year that he once sought to deter Russian President Vladimir Putin from attacking Ukraine by threatening to “bomb the sh*t out of Moscow” in retaliation,