Alexander Vassiliev (Russian: Александр Васильев) is a Russian journalist, writer, and espionage historian living in London who is a subject matter expert in the Soviet KGB and Russian SVR. A former officer in the Soviet Committee for State Security (KGB), he is known for his two books based upon KGB archival documents: Spies: The Rise and Fall of the KGB in America, co-authored with John Earl Haynes and Harvey Klehr, and The Haunted Wood: Soviet Espionage in America: the Stalin Era, co-authored with Allen Weinstein.
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