I didn't "imply a comparison," I made one. Present day Russia is a lot weaker in many senses than the old USSR. You seem to be assuming that I am making a cold war argument, which I didn't mean to, but there you are.
The way it looks to me is that Russia is indeed moving to dominate the Trans-Caucasus, and further I feel it's rather sad to find people arguing that "sphere of influence" is still a valid argument. Does it apply to Russia and Ukraine? Or Russia and the Baltic states? Finland? (Which Russia ruled for over a century). Poland? (Much of it, likewise.) I doubt it; I don't look for Russian tanks in Helsinki, Vilnius, Warszawa, or even Kyiv anytime soon, for which I am profoundly grateful. I thought I had suggested that Putin was not such a fool as to run crazy with adventures but obviously I didn't say it clearly. My fault.
I have no idea what political miscalculations led the Georgian government to its present predicament, though if they counted on serious US involvement they were incredibly naive; so much so that I find it hard to imagine that they had any encouragement beyond, perhaps, Saakashvili's own desperation. I look forward to hearing what actually was said or done to get Georgia into this mess. The Transcaucasus has been a tangle of nationalist and secessionist movements for generations, and the Russian states have played an imperialist game for a long time, one against the other.
Again, nothing to celebrate. It's sad that some of the posters (I'm not including you) seem to be saying, "Hey, good on Putin, he bloodied the nose of the US." If that is what one takes away from this particular debacle, well, sad times for everyone, not just for Tbilisi, or any other place in the region. Much of it is a hideous, wrecked tangle of failing states, secessionist movements, banditry, and ruined cities; in Chechnya, Dagestan, now Georgia (with So. Ossetia and Abkhazia), and what the heck will happen with Armenia and Azerbaijan.
There's nothing to celebrate here. Any blow to the US in this region is small time, because there could never be a realistic expectation of American power there anyhow. But whatever floats boats.
ETA: I was responding especially to Egslim's post, just above.