Which, um, they seem to be doing just fine. Frankly, I'm even a little impressed with the progress that the Russian Army is making in just four days. Keep in mind, it took us weeks to get to Baghdad in 2003.
Your gun wank fantasies aside, the Russians are going a fairly impressive job of mopping up the Ukraine, even with the billions of dollars of weapons we've dumped into the place.
You mean after a decade of antagonizing their larger neighbor, they got invaded?
Maybe they shouldn't have antagonized their neighbor. Don't poke the bear.
This problem SHOULD have been resolved at the negotiating table.