South Korean military ruler who seized power 1979; president 1981-88 as head of the newly formed Democratic Justice Party. Chun, trained in Korea and the USA, served as an army commander from 1967 and was in charge of military intelligence 1979 when President Park was assassinated by the chief of the Korean Central Intelligence Agency (KCIA). General Chun took charge of the KCIA and, in a coup, assumed control of the army and the South Korean government. In 1981 Chun was appointed president, and oversaw a period of rapid economic growth, governing in an authoritarian manner. In 1988 he retired to a Buddhist retreat.