 The objective of the psychological operation was to target Communist pilots to defect to South Korea with a MiG-15, in order for the U.S. to conduct analysis of the capabilities of the MiG.Some leafleting of North Korea was resumed after the Korean War, such as in the Cold War "Operation Jilli" from 1964 to 1968.The CIA's operation to overthrow the Government of Guatemala in 1954 marked an early zenith in the Agency's long record of covert action.