Ukraine: US troops on high alert over stand-off - BBC News
This could end up as NATO v Russia war. The 8,500 combat-ready US troops that are on high alert for deployment are, at least at this stage, for deployment if Nato military alliance decides to activate a rapid-reaction force.
There are a few other NATO members (Denmark, Spain, Bulgaria and the Netherlands) sending military assets to the region as well. But I doubt there’d be unanimous support for military action among NATO members.
Depending on how it all unfolds, this could be damaging to NATO. This might even be a clever play by Russia to weaken NATO by widening divisions along the lines of where its members stand on action against Russia.