President biden warning his ukrainian counterpart that a russian invasion is now virtually certain once the ground is frozen later in february, allowing the movement of russian officials. this is according to a senior ukrainian official who said a call yesterday between biden and president zelensky did not go well. the ukrainian leader disagreeing on the risk levels of an attack, officials said. the white house, though, disputing the official's account. let's talk about the situation in ukraine with pentagon spokesman john kirby. thank you so much for giving us your time at such a critical poi...