Anyone think this is because of the Iraq War and recent demonstrations of American vitality? If you trust Pillsbury's overviews of Chinese strategic thought, what's being suggested is that China is replanning their diplomatic strategy from one where the United States becomes merely a single pole among many, to one where the United States remains the north star. Therefore combative policies to other regional powers are fruitless, China would not have the space or time to pick up the pieces once the show is over.
Same with Agni 3 (?, 2?), let's see how China's foreign policy changes with regard to India. Actually, how much does the Chinese government understand India at all?