Exactly as intended, Porter Goss has hit the Central Intelligence Agency like a wrecking ball. The former Florida congressman, who had an undistinguished career as a CIA operations officer in the 1960s, came to the agency in September 2004 after serving seven years as chairman of the House Permanent Select Committee on Intelligence. With his staff in tow -- a collection of Capitol Hill aides nicknamed the Gosslings -- Goss bowled into the CIA's Langley, Virginia, headquarters, scattering senior officials like so many duckpins. In mid-September, Robert Richer, the newly installed deputy director of operations and a former Near East Division chief, quit in disgust. The newspapers duly reported Richer's departure. But he is only the tip of a Titanic-sized iceberg. Since Goss took over, between 30 and 90 senior CIA officials have made their exit, according to various sources, some fleeing into retirement, others taking refuge as consultants. Others, unable to retire, have stayed, but only...