Russia is bogged down in Ukraine as is. Can Belarus handle an invasion on their own is the question. Putin might want it but hopefully the Belarus military is more realistic.......
This has alarmed the Poles who fear a Belarussian invasion. Surely Putin wouldn't be so foolish as to invade a NATO country, or would he?
During the first cold war it was the Soviet Puppet states like East Germany that would've made them dangerous in a conventional war. I don't think Belarus is there as far a conventional war goes.