Last Monday I pointed out that China’s foreign minister Qin Gang had suddenly vanished and hadn’t been seen in three weeks. Officially, he was said to be ill but unofficially there rumors that he’d done something potentially embarrassing to the party. Today, Qin was officially removed from his post and replaced, once again suggesting that whatever led to his disappearance was seen as a career-ending mistake.Mr. Qin was abruptly removed as foreign minister on Tuesday after having disappeared from public view for 30 days. The move ended the career of a diplomat who had leaped to the top as one...