AP
Ukraine crisis: Explainer as tensions rise
Russia has placed more than 100,000 troops near Ukraine's border and ratcheted up war games in the region. Moscow denies it is planning an assault, but the United States and its NATO allies fear that Russia is planning for war — and are making preparations of their own. The battle-weary region has been fighting pro-Russia separatist fighters since 2014. It is an area close to where Russia has massed tens of thousands of soldiers in a troop buildup that U.S. President Joe Biden says could mount the largest invasion since World War II.
