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Grand Ayatollah Seyyed Ruhollah Mosavi Khomeini (listen (Persian pronunciation) (help·info)) (Persian: ??? ???? ????? ????? Ru?ollah Musavi Khomeyni (May 17, 1900 – June 3, 1989) was a Shi`i Muslim cleric and marja (religious authority), and the political leader of the 1979 Iranian Revolution which saw the overthrow of Mohammad Reza Pahlavi, the last Shah of Iran. Following the revolution, Khomeini became Supreme Leader of Iran—the paramount symbolic political figure of the new Islamic Republic until his death.
He was considered a high spiritual leader (marja al-taqlid, "source of imitation") to many Shi'a Muslims. Khomeini was also a highly-influential and innovative Islamic political theorist, most noted for his development of the theory of velayat-e faqih, the "guardianship of the jurisconsult (clerical authority)". He was named Time's Man of the Year in 1979 and also one of Time magazine's 100 most influential people of the 20th century.
The complete, up-to-date and editable article about Ruhollah Khomeini can be found at Wikipedia: Ruhollah Khomeini