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.
Sergei Skripal Sergei Skripal (Сергей Скрипаль) is a former Russian officer who was convicted of spying for the United Kingdom.