I'm sure there's a couple people reading about this and other events in Belarus and wondering why Russia is so involved with Belarus like this. I thought I'd add a little bit on context. Like Ukraine, Belarus serves as a buffer between NATO and Russia, and was once a part of the Soviet Union. But Belarus is especially important to Russia because of Kaliningrad: https://en.wikipedia.org/wiki/Kaliningrad . It's a part of Russia that is completely separate from the rest of the country, on the Baltic Sea wedged between Poland and Lithuania. Kaliningrad is heavily militarized, and in any NATO-Russian conflict Kaliningrad would play a vital role. And the country of Belarus is directly between Kaliningrad and the rest of Russia. Any Russian war plan would hinge on being able to move troops through Belarus. I would expect Russia to pull out all the stops to defend their interests here
EDIT: sorry, Belarus does not directly connect to Kaliningrad, there is a gap of about 50 miles with Lithuania and Poland on either side. But the general point still stands