"Everyone is entitled to his own opinion, but not his own set of facts." That cardinal rule of the late Daniel Patrick Moynihan comes in for mention in George Tenet's memoir "At the Center of the Storm." An unusual kind of irony, then, that Mr. Tenet is now attempting to rehabilitate himself in official Washington, and so he must paint himself as a dissenter, a truth-teller, a man railroaded by the Bush administration. The memoirist's natural tendency to recount the most favorable train of events thus takes on its own momentum. In Mr. Tenet's case, this puts the man at...