What British intelligence officer worked as a double agent for the Soviet Union and was recruited by Arnold Deutsch?
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.
Oleg Penkovsky Oleg Vladimirovich Penkovsky (Russian: Олег Владимирович Пеньковский ; 23 April 1919 – 16 May 1963), codenamed HERO, was a colonel with Soviet military intelligence (GRU) during the late 1950s and early 1960s who informed the United Kingdom and the United States about the Soviet emplacement of missiles in Cuba.