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

The Rome residency’s pride in running the OGPU’s leading agent is reflected in its flattering descriptions of him. Constantini was said to have the face of “an ancient Roman,” and to be known to his many female admirers as “the handsome one.”⁶⁶ By 1928 the OGPU suspected him—accurately—of also supplying documents to Italian intelligence. Despite suspicions about Constantini’s honesty, however, there was no mistaking the importance of the material he supplied. Maksim Litvinov, who by the late 1920s was the dominating figure in the People’s Commissariat for Foreign Affairs, pronounced it “of great use to me.”⁶⁷

THE OGPU’S FIRST successful penetration of the British foreign service was overshadowed in 1927 by an embarrassing series of well-publicized intelligence failures. The security of the rapidly expanding foreign network of OGPU and Fourth Department (Military Intelligence) residencies was threatened by the vulnerability of early Soviet cipher systems to Western cryptanalysts, by the inexperience of some of the first generation of INO officers, and by errors in the selection and training of foreign Communists as agents. The International Liaison Department (OMS) of the Communist International provided a ready pool of enthusiastic volunteers for Soviet intelligence operations. Some, such as the German Richard Sorge, were to be numbered among the greatest spies of the century. Others ignored orthodox tradecraft and neglected standard security procedures.

In the spring of 1927 there were dramatic revelations of Soviet espionage in eight different countries. In March a major OGPU spy ring was uncovered in Poland; a Soviet trade official was arrested for espionage in Turkey; and the Swiss police announced the arrest of two Russian spies. In April a police raid on the Soviet consulate in Beijing uncovered a mass of incriminating intelligence documents; and the French Sûreté, arrested members of a Soviet spy ring in Paris run by Jean Crémet, a leading French Communist. In May Austrian foreign ministry officials were found passing classified information to the OGPU residency, and the British Home Secretary indignantly announced to the House of Commons the discovery of “one of the most complete and one of the most nefarious spy systems that it has ever been my lot to meet.”⁶⁸

Following this last discovery, Britain—still regarded in the Soviet Union as the leading world power and its most dangerous enemy—formally broke off diplomatic relations, and senior ministers read out to the Commons decrypted extracts from intercepted Soviet telegrams. To tighten the security of Soviet diplomatic and OGPU communications after the dramatic revelation of British codebreaking successes, the laborious but virtually unbreakable “one-time pad” cipher system was introduced. As a result, Western cryptanalysts were able to decrypt almost no further high-grade Soviet communications until after the Second World War.⁶⁹

THE MOST WORRYSOME as well as the most plentiful foreign intelligence in 1927 concerned Japan. Since 1925 INO had been able to intercept the secret communications of both Japan’s military mission and its consulate-general in the northeast Chinese city of Harbin. Remarkably, instead of using diplomatic bags and their own couriers, Japanese official representatives in Harbin corresponded with Tokyo via the Chinese postal service. The OGPU recruited the Chinese employees who were used to take Japanese official despatches to the Harbin post office, and sent expert teams of letter-openers to examine and photograph the despatches, before sending them on their way in new envelopes with copies of Japanese seals. Professor Matsokin, a Japanese specialist from Moscow,⁷⁰ was employed by INO in Harbin to peruse the despatches and send translations of the most important promptly to the Centre. There was ample evidence in the intercepts forwarded to Moscow of designs by the Japanese military on China and the Soviet Far East. But the most troubling document, intercepted in July 1927, was a secret memorandum written by Baron Gi-ishi Tanaka, the Japanese prime minister and foreign minister, which advocated the conquest of Manchuria and Mongolia as a prelude to Japanese domination over the whole of China, and predicted that Japan “would once again have to cross swords with Russia.”⁷¹