As Kyiv braces for the potential of difficult talks with Russia, Biden hopes providing land mines and allowing longer-range attacks will strengthen its hand.

President-elect Donald Trump's choice for national security advisor said the U.S. should find "the framework of a deal."

Ukraine says Russia launched an intercontinental ballistic missile, one carrying a conventional warhead, toward it. ICBMs can also be used to launch nuclear weapons, and Russian President Vladimir Putin recently lowered the bar for using nuclear weapons in what appeared to be a threat to the U.S. and its NATO allies.