"The only person who can do this is President Donald Trump and he will do it. They're tired of killing each other out there," Keith Kellogg said.

At a CNN town hall in May 2023, Donald Trump promised that if elected, he would end the war in Ukraine in a single day. That bullish pledge has now become a familiar refrain, with the president-elect insisting that he uniquely has the nous to bring Russia and Ukraine to the table and force a truce.