President Donald Trump delivered a fresh warning to Russian President Vladimir Putin after the Russians spent the past few days showering Ukraine with missile and drone strikes.

'What Vladimir Putin doesn't realize is that if it weren't for me, lots of really bad things would have already happened to Russia, and I mean REALLY BAD,' Trump posted to Truth Social Tuesday. 'He's playing with fire!'

Over the weekend Trump grew publicly frustrated with Putin, who he had spoken to on the phone for two hours the previous Monday, coming away from the conversation saying he thought it to be productive.

But there was no progress made in concluding the war - with Russia escalating its attacks on Ukraine thoughout the weekend, pummelling the country with drone strikes.

Ukrainian officials estimated around 900 drones were launched by Russia in attacks from Friday through Sunday nights, the Associated Press reported.