Maybe it's the time to make the really big deal with China. They get Taiwan and Korea is unified under the Southern government. The U.S. and China form a mutual defense treaty, thus nullifying any threat to them from India or Russia. The U.S. gets one big enemy (and defense cost) crossed off its long list of major costs; big peace bonus. The containment of Russia is also assured, working to U.S. strategic interests. There is much to be gained by both nations.