The US gave Ukraine permission to hit Russia with long-range missiles, as it had long wanted. But the delay meant Russia was able to prepare.

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.

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