I think you all greatly underestimate china's navy......I saw an interview with a general who said that in 10-12 years our "current" navy will not be able to take on the chinese naval forces given their current rate of growth. Our surveillance plane that collided with the chinese fighter was there to spy on a new chinese submarine that was conducted it's first sea trial. Without an awesome submarine force the chinese cannot take Taiwan due to american subs in the area that would sink any troop transports that tried to cross the strait. In this situation however, I don't think China is going to get involved. They're moving troops to the afghani border because they don't want a flood of refugees flooding into the country, they can't feed their 1billion people as it is.