Walter Pincus and Vernon Loeb of the Washington Post report that the FBI does not believe that the 1995 Chinese defector whose information led to the spy hunt at the national laboratories was a double agent, as the CIA concluded. It appears that the CIA believed the defector to be a double agent primarily (if not solely) because he “failed” a polygraph “test.” See George Maschke’s commentary on the the AntiPolygraph.org message board.