Code-named MKULTRA, the project was the brainchild of CIA Director Allen Dulles, who was intrigued by reports of mind-control techniques allegedly conducted by Soviet, Chinese and North Korean agents on U.S. prisoners of war during the Korean War. The CIA wanted to use similar techniques on its own POWs and perhaps use LSD or other mind-bending substances on foreign leaders, including Cuba's Fidel Castro, a few years after the project got underway in 1953.