The Sword and the Shield: The Mitrokhin Archive and the Secret History of the KGB

When Secondo Constantini returned from his expense-paid junket in London, he was able to resume supplying classified British documents to his brother Francesco, who passed them on for copying by both Akselrod’s illegal residency and Italian intelligence before returning them to embassy files. The Centre regarded the whole improbable story of Constantini’s continued access to embassy files after Vivian’s investigation as deeply suspicious. Unable to comprehend the naivety of the British foreign service in matters of embassy security, it suspected instead some deep-laid plot by British and/or Italian intelligence. Regular meetings with Francesco Constantini were suspended in August 1937.⁶⁸

THE CIPHER MATERIAL obtained from the Constantini brothers, Captain King and other agents in Western embassies and foreign ministries was passed to the most secret section of Soviet intelligence, a joint OGPU/Fourth Department SIGINT unit housed not in the Lubyanka but in the Foreign Affairs building on Kuznetsky Bridge. According to Evdokia Kartseva (later Petrova), who joined the unit in 1933, its personnel were forbidden to reveal even the location of their office to their closest relatives.⁶⁹ Like most young women in the unit, Kartseva was terrified of its head, Gleb Ivanovich Boky, who had made his reputation first in conducting the “Red Terror” in Petrograd in 1918, then in terrorizing Turkestan later in the civil war.⁷⁰ Though in his mid-fifties, Boky still prided himself on his sexual athleticism and arranged group sex weekends at his dacha. Kartseva lived in fear of being invited to the orgies. During the night shift, when she felt most vulnerable, she wore her “plainest and dullest clothes for fear of attracting [Boky’s] unwelcome attention.”⁷¹

Despite the personal depravity of its chief, the combined OGPU/Fourth Department unit was the world’s largest and best-resourced SIGINT agency. In particular, thanks to Bystroletov and others, it received more assistance from espionage than any similar agency in the West. The records seen by Mitrokhin show that Boky’s unit was able to decrypt at least some of the diplomatic traffic of Britain, Austria, Germany and Italy.⁷² Other evidence shows that Boky’s unit was also able to decrypt some Japanese, Turkish⁷³ and—almost certainly—American⁷⁴ and French⁷⁵ cables. No Western SIGINT agency during the 1930s seems to have collected so much political and diplomatic intelligence.

The unavailability of most of the decrypts produced by Boky’s unit makes detailed analysis of their influence on Soviet foreign policy impossible. Soviet SIGINT successes, however, included important Japanese decrypts on the negotiation of the Anti-Comintern Pact between Germany and Japan. The published version of the Pact, concluded in November 1936, merely provided for an exchange of information on Comintern activities and cooperation on preventive measures against them. A secret protocol, however, added that if either of the signatories became the victim of “an unprovoked [Soviet] attack or threat of attack,” both would immediately consult together on the action to take and do “nothing to ease the situation of the USSR.” Moscow, unsurprisingly, read sinister intentions into this tortuous formula, though Japan was, in reality, still anxious not to be drawn into a European war and had no intention of concluding a military alliance. Three days after the signing of the Anti-Comintern Pact, Litvinov publicly announced in a speech to a Congress of Soviets that Moscow knew its secret protocol. His speech also contained a curious veiled allusion to codebreaking:

It is not surprising that it is assumed by many that the German-Japanese agreement is written in a special code in which anti-Communism means something entirely different from the dictionary definition of this word, and that people decipher this code in different ways.⁷⁶

The success of Boky’s unit in decrypting Italian diplomatic traffic probably provided intelligence on Italy’s decision to join the Anti-Comintern Pact in the following year.