The publication of Hubris is filled with irony for David Corn, Washington editor of the left-wing Nation magazine. He was present at the creation of the Valerie Plame "scandal," which the enemies of George W. Bush hoped could bring down a president. Nobody was more responsible for bloating this episode. Yet Corn is coauthor of a book that has had the effect of killing the story. Thanks to Corn's intrepid coauthor, Newsweek investigative reporter Michael Isikoff, Hubris definitively revealed then-Deputy Secretary of State Richard Armitage as my source that Joseph Wilson's wife, Valerie, worked for the CIA and suggested her...