The US president hit out after holding talks with Volodymyr Zelenskyy at Pope Francis’ funeral.
In a post on Truth Social, Trump said he believed Putin was “just tapping me along” as he tries to get a deal to end the Ukraine war.
He also hinted at imposing tougher economic sanctions on Russia unless a peace agreement is reached soon.
It comes just two days after Trump called on Putin to stop bombing Ukraine so they could “get the peace deal done”.
In his post on Saturday afternoon, the president said: “There was no reason for Putin to be shooting missiles into civilian areas, cities and towns, over the last few days.
“It makes me think that maybe he doesn’t want to stop the war, he’s just tapping me along, and has to be dealt with differently, through “Banking” or “Secondary Sanctions?” Too many people are dying!!!”
Meanwhile, Zelenskyy said he and Trump had enjoyed a “good meeting” in the Vatican – their first talks since their extraordinary Oval Office bust-up in February.
In a post on X, the Ukrainian president said: “We discussed a lot one on one. Hoping for results on everything we covered.
“Protecting lives of our people. Full and unconditional ceasefire. Reliable and lasting peace that will prevent another war from breaking out.
“Very symbolic meeting that has potential to become historic, if we achieve joint results.”