DON'T LET DEPUTY SECRETARY OF STATE Robert Zoellick's fondness for pandas mislead you. The Bush administration's China policy has been undergoing a quiet metamorphosis, and now has a new steeliness to it.Fifteen months ago, just two days before George W. Bush's reelection, the Chinese government's English-language mouthpiece, China Daily, reprinted a blast by senior diplomat Qian Qichen against a "Bush Doctrine" marked by "cocksuredness and arrogance." President Bush no doubt believed, in the last days of an extremely tight race, that Qian's comments were an attempt to influence the result of the election, or at the very least an attempt...