Vladimir Kuzichkin
Vladimir Anatolyevich Kuzichkin Владимир Анатольевич Кузичкин is a former Soviet KGB officer who defected to the Tehran Station of the British secret intelligence service in 1982. Information on Soviet agents in Iran that he passed on to MI6 was subsequently provided by the agency, along with the CIA, to the Khomeini regime, which executed many of the agents. Ali Agca claimed that Major Kuzichkin ordered him to kill John Paul II.
He published his memoirs in English in 1991 with the title of Inside the KGB: Myth and Reality.