Gevork Andreevich Vartanian (Armenian: ????? ?????????, Russian: ????´?? ?????´???? ???????´?; February 17, 1924 – 10 January 2012) was a Soviet intelligence officer.He was primarily responsible, together with his wife Goar Vartanian, for thwarting Operation Long Jump, concocted by Adolf Hitler, headed by Ernst Kaltenbrunner, and led by Otto Skorzeny, which was an attempt to assassinate Stalin, Churchill, and Roosevelt at the Tehran conference in 1943.