Recently a number of former CIA officers received an invitation from the Spy Museum in Washington to attend a luncheon for former KGB Col. Victor Cherkashin. The event, as the invitation said, would afford "a once-in-a-lifetime opportunity to dine and dish with an extraordinary spymaster." In the heyday of the Cold War, such an offer, delivered with slightly more discretion, might have been the prelude to a KGB recruitment operation. Now it's merely the notice for a book party celebrating yet another memoir by a former KGB officer recounting how the KGB duped the CIA. In this case, there is...