In the long run, global politics are bound to become increasingly uncongenial to the concentration of hegemonic power in the hands of a single state. Hence, America is not only the first, as well as the only, truly global superpower, but it is also likely to be the very last.
In the longer run, I happen to think that Russia really has no choice but to become gradually more associated with the Euro-Atlantic community. Because if it isn't, then it's going to find itself essentially facing China all by itself, facing the Euro-Atlantic community all by itself.
It certainly would be possible for America to redefine its role in the world, especially if, in the short run, America is able to cope effectively with the ongoing dilemma in the Middle East.
The dynamic character of China's nonstatist economic transformation, including its social openness to the rest of the world, is not mutually compatible in the long run with a relatively closed and bureaucratically rigid Communist dictatorship.