A new book co-authored by Newsweek’s Michael Isikoff and the Nation’s David Corn, excerpted in Newsweek , reports what everybody knew about the CIA leak case: that the original leaker of Valerie Plame’s identity was State Department official Richard Armitage — a man who had nothing to do with any sort of traitorous conspiracy to out a CIA agent:

The disclosures about Armitage, gleaned from interviews with colleagues, friends and lawyers directly involved in the case, underscore one of the ironies of the Plame investigation: that the initial leak, seized on by administration critics as evidence of how far the White House was willing to go to smear an opponent, came from a man who had no apparent intention of harming anyone…
But officials at the White House also told reporters about Wilson’s wife in an effort to discredit Wilson for his public attacks on Bush’s handling of Iraq intelligence. Karl Rove confirmed to Novak that Wilson’s wife worked at the CIA, and days later offered the same information to Time reporter Matt Cooper. The inquiry into the case led to the indictment of Cheney’s chief of staff, I. Lewis (Scooter) Libby, on charges of perjury and obstruction of justice. Armitage himself was aggressively investigated by special counsel Patrick Fitzgerald, but was never charged. Fitzgerald found no evidence that Armitage knew of Plame’s covert CIA status when he talked to Novak and Woodward.