EDWARD JAY EPSTEIN: Moles. “Showtime has a new psycho-thriller series called ‘Homeland’ that concerns the search for a hidden mole in the CIA. So in the episodes to come dedicated investigators will ferret him or her out. What is interesting here is the schism between the fictional world and real world of counterespionage. In the former, the issue is discovering and getting rid of the mole. In the real world, the issue is the vulnerability of the organization itself. If the CIA can be penetrated for a sustained period of time by an enemy agent masquerading as a loyal officer, then there is a defect in its apparatus. To admit this, is to admit it is vulnerable to penetration.”