We are already beyond that in Ukraine. Bush flew back combat-tested Ukrainian soldiers to Georgia, and that is the point that Russia halted its advance. The U.S. took other supportive measures to back Georgia short of all-out war, as Cheney has said in interviews in recent weeks.
But as I said, Bush overall took a firm military/diplomatic stance in his 8 years, and it was only when he was leaving as president that Russia ventured into military action. Even so, Bush implemented policies that made Russia halt its advance, ceasing to take further territory in Georgia.
