Otto, seems you're conveniently leaving out the part where Georgia launches an artillery bombardment of South Ossetia, leaving it's capital 'in ruins' and indiscriminately killing over 1000 civilians and Russian peacekeepers - in South Ossetia under an international mandate agreed following civil war in 1992.
"After intense fighting" is deceptive.
Timeline: Conflict between Georgia and South Ossetia | International | Reuters
there are others out there, as I'm sure you know.
-Georgia knew - must have known, it was reported and publicised - there was a massive Russian build up and 'exercise' on the other side of the border.
-Georgia attacked South Ossetia.
-Russia kicked Georgia back out of South Ossetia as it was obliged to do under an international peacekeeping agreement.
Are there other power plays in here between NATO/The US/The EU? Certainly.
I'm at a loss as to why Georgia would ever have assaulted South Ossetia without some guarantees from NATO and The US. Saakashvili has alluded to as much during many of his interviews, wondering angrily where was his support from The West.
Russia isn't an angel, but neither is it a devil. Certainly not in this case.