Power may be at the end of a gun, but sometimes it's also at the end of the shadow or the image of a gun.
The object of China's strategy is inexorably to supplant the United States as the world's premier economic power, and if necessary, to defeat us militarily.
If you look beyond the short term violence and instability, you do see significant activities on the part of the Iraqi people that indicate they understand the commitment necessary to govern themselves. It's not clear how they will do it, but it never is.