For weeks, Western officials warned that a massive buildup of Russian troops on the border with Ukraine signaled a plan by Moscow to invade. Now, a full-scale invasion by Russian forces is underway, with missiles and artillery raining down on major cities, hundreds of civilians killed and some places — including Ukraine’s largest nuclear power plant — already under Russia’s control.
Russia is at war with Ukraine. Here’s the background you need to know.
Updated March 7, 2022 at 2:35 p.m. EST|Published December 7, 2021 at 5:08 a.m. EST