"This important new book . . . based on archival material . . . shows the huge extent of Soviet espionage activity in the United States during the 20th century" ( The Telegraph).Based on KGB archives that have never been previously released, this stunning book provides the most complete account of Soviet espionage in America ever written. In 1993, former KGB officer Alexander Vassiliev was permitted unique access to Stalin-era records of Soviet intelligenc...