JD Vance said the US would "walk away" from negotiating peace in Ukraine if it believes Russia to be acting in bad faith.

He told Fox news:"We knew that Russia would ask for too much because Russia's perspective on the ground is that they're winning. Our attitude is we don't want Ukraine to collapse. We obviously want Ukraine to remain a sovereign country.

"But Russia can't expect to be given territory they haven't even conquered yet. I actually think that it’s progress that they’re even talking at all – the Russians and Ukrainians. I think it’s progress that they are putting concrete peace plans on the table. But we knew that the Russians' first offer would be too much.

"We knew that they would ask for more than what was reasonable to give, that's how negotiations often work. What would bother me is if we conclude that the Russians are not engaging in negotiation in good faith. And if that happens, yeah, we're going to walk away. The president’s gonna say – we’re out of this."