A series of Russian military moves and potential political steps has heightened concern within the Biden administration that Moscow could launch a major military attack in Ukraine within weeks, US officials said.
The officials, who discussed internal assessments of the Russian buildup on condition they not be identified, sketched out a series of indicators suggesting Putin intends an invasion in coming weeks, although the size and scale are unclear. They stressed that a diplomatic solution appears to remain possible.
Among those military indicators: an exercise of Russia's strategic nuclear forces that usually is held each fall was rescheduled for mid-February to March.