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 Biden will allow Ukraine to carry out long-range strikes on Russian targets, according to reports. How could it impact the war?

In the week that saw the conflict pass its 1000th day, Western powers substantially boosted Ukraine's military arsenal - and the Kremlin made its loudest threats yet of a nuclear strike. Here is how the last week played out - and what it means.