Three years into the war with Russia, President Zelensky appears to have become embroiled in a personal feud with the leader of Ukraine’s most powerful ally.

Keith Kellogg and President Volodymyr Zelensky were expected to discuss possible paths to ending the war and ways to defuse tensions between Washington and Kyiv.

"It's unacceptable, they [Ukraine] need to tone it down and take a hard look and sign that deal," he tells Fox News. The deal he is referring to is a push by Donald Trump for access to rare minerals in Ukraine in return for aid, or even as compensation for the support the US has already provided.