What British intelligence officer worked as a double agent for the Soviet Union and was recruited by Arnold Deutsch?
Arnold Deutsch Arnold Deutsch (1903–1942?), variously described as Austrian, Czech or Hungarian, was an academic who worked as a Soviet spy, best known for having recruited Kim Philby. Much of his life remains unknown or disputed.
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.