So the real question is what or who is going to stop them from expanding? Asians have a higher IQ, they have the human numbers and natural resources.
The only thing I can imagine stopping them is that they will be composed of too many regions that want to split. But as long as they can maintain a strong grip, I don't think anything can split off.
There is no world power that can or wants to face them head on, and it will only get worse when they grow bigger (which they will).
Maybe I'm pessimistic, or maybe just realistic?