<p>WE'RE RELUCTANT to return to the subject of former CIA employee Valerie Plame because of our oft-stated belief that far too much attention and debate in Washington has been devoted to her story and that of her husband, former ambassador Joseph C. Wilson IV, over the past three years. But all those who have opined on this affair ought to take note of the not-so-surprising disclosure that the primary source of the newspaper column in which Ms. Plame's cover as an agent was purportedly blown in 2003 was former deputy secretary of state Richard L. Armitage.</p>