Russia supports two provinces determined to secede from Georgia. Russia, with aspiring nations within its borders, generally opposes secessionists, as it did when America, which sometimes opposes secession (e.g., 1861-65), improvidently supported Kosovo's secession from Russia's ally Serbia. But Russia's aggression is really about the subordination of Georgia, a democratic, market-oriented U.S. ally. This is the recrudescence of Russia's dominance in what it calls the "near abroad." Ukraine, another nation guilty of being provocatively democratic near Russia, should tremble because there is not much America can do. It is a bystander at the bullying of an ally that might be about to undergo regime change.

http://www.washingtonpost.com/wp-dyn/content/article/2008/08/11/AR2008081102156.html