“Nobody ever actually died from laughing too hard and that’s the only danger any Russian troops are in.”
More have Russian troops have already died in the Ukraine, than died in a decade in Afghanistan (from which the Soviet Union retreated, and then collapsed). The Soviet Military was four times the size of the current Russian Military, and the Warsaw Pact was on their side (now among their fiercest opponents).
The Ukraine and Afghanistan have very similar numbers for population and land area, but Ukrainians are much better educated, and much better supplied with heavy and sophisticated weapons.