Ukrainian leader Volodymyr Zelensky has increasingly made his frustrations with the Trump administration public, but he may have just crossed the line with the US President, who Zelensky admits can be tough and unbending.

Zelensky has newly complained amid the latest Geneva trilateral talks that the US delegation could pressure him to make "unsuccessful decisions" and he is urging Washington to back off, even using expletives to make his point.

For starters, he claims that the Ukrainian public won't let him cede territory to Russia for the sake of peace even if he wanted to, as we highlighted previously.

But the latest colorful verbal broadside, cited by Axios on Tuesday as Russian and Ukrainian delegations convened in Geneva, saw Zelensky take direct aim at the head of Moscow's negotiating team, Vladimir Medinsky. Kiev's frustration at the state of dialogue has been boiling over.