When did the double agent who was recruited by Arnold Deutsch defect to the Soviet Union ?
Kim Philby Harold Adrian Russell "Kim" Philby (1 January 1912 – 11 May 1988) was a high-ranking member of British intelligence who worked as a double agent before defecting to the Soviet Union in 1963. He served as both an NKVD and KGB operative.
Nikolai Ivanovich Kuznetsov Nikolai Ivanovich Kuznetsov (Russian: Николай Иванович Кузнецов ) (July 27, 1911–March 9, 1944) was a semi-legendary Soviet intelligence agent and partisan who operated in Nazi-occupied Ukraine (Reichskommissariat Ukraine) during World War II who personally killed six high-ranking German officials. His file is still not fully disclosed and will be held until 2025 in the FSB archives. It was not until 1990 that Kuznetsov was officially recognized as a NKVD agent. He used several pseudonyms during his intelligence operations: e.g. Rudolf Schmidt, Nikolai Vasilevitsh Grachev (Николай Васильевич Грачёв) and Oberleutnant Paul Siebert. Kuznetsov was posthumously awarded the title Hero of the Soviet Union.