The Soviet Defector Who Did the Most Damage

During the past 30 years, extraordinary material released from American and Russian archives has enormously expanded our understanding about Soviet espionage directed at the United States and its allies during the 20th century. The Venona decryptions were the product of American decoding of KGB messages. The Vassiliev Notebooks were based on documents the KGB provided to a researcher as part of a negotiated book deal. The only material provided by a genuine spy was the Mitrokhin material, several thousand pages of notes made surreptitiously by a KGB archivist. While British historian Christopher Andrew collaborated with Vasili Mitrokhin to write two books based on his notes, Mitrokhin himself has not received the attention he merits. Venona and Vassiliev exposed a great deal about Soviet espionage from the 1930s and ’40s. Mitrokhin’s information covered more recent operations and did far more damage to Soviet intelligence than any other defector.

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