I think that Russia have a very good reason to consider Georgia, the US and the Ukraine a threat, and it is quite simply NATO. During the Cold War, the fight was NATO vs. Warsaw Pact, but then the Warsaw Pact and the Soviet Union dissolved, leaving NATO. NATO, however, chose not to dissolve - worse, it chose to continue to expand. Georgia and the Ukraine both want to join NATO, and NATO have agreed in principle. Can you imagine how the Americans would react if Russia signed treaties with Canada and Mexico and started sending troops and missiles there?
I'm not trying to paint the Russians as saints - they're not, but they're no worse than any other country their size.
Also, I think the 50% and 5% figures you've quoted are completely wrong - can I please see your source for those, I think it would make very interesting reading.