Power Politics

Though Russia and Georgia have recently signed a tenuous truce, the conflict is likely far from over. I don't have much to say on this, since I'm not very knowledgeable in this area, but it does make you wonder: how useful is it nowadays to have the US as a friend internationally? What can we (alone) really do for Georgia? Russia and the rest of the world knows how thinly-stretched our military is. If Russia pushes back, what power does the US really have left to protect Georgia?