There is a book by Jeannie Dixon where she predicted a Chinese migration into Russia. Given the current demographic reality, with the bulk of the Chinese population concentrated on their coast, this seems nutty.
Given the possibility of global warming and the current conflict between Russia and Georgia, her premonition deserves a second look.
It is hoped that the CIA is looking into what would happen if sea levels rose and the price of gasoline began to rise again. Global warming may be off the table at EPA, it should not be at CIA. Both energy prices and rising sea levels may drive the majority of the Chinese population away from the coast and the Chinese military west in search of oil, which is conveniently located in Siberia. Global warming and changing weather patterns could water the Gobi, or at least force the kind of technological development which makes drinking water more available in the Russian Steppe.
Due to the value of the resources contested in any Sino-Russian conflict, nuclear weapons won't be used - at least not strategic ones. This makes analysis of Russian v. Chinese conventional capabilities over the coming years essential. As we learned in Korea, China has the advantage of numbers, even after the one-child policy has been in effect for a generation. As those pampered pets need gas for their cars they may go west to get it. Picking on the Georgians, or even pushing back against Georgean militants, is one thing. Fighting a surging China, whether in war or in illegal immigration, is another (as we know with our southern border).