John Bolton’s decision to resign as America’s envoy to the United Nations was a wise move. He averted a distracting and divisive fight at a time when both Congress and the Bush administration have better things to do. He has also provided President Bush with an opportunity to show the kind of bipartisan leadership he talks about so frequently and exercises so seldom. This page opposed Mr. Bolton’s nomination in the first place, arguing that at the very minimum, an ambassador to the United Nations should be someone who believed the organization deserved to exist. Mr. Bolton has always been...