Ayatollah Sayyed Ruhollah Mousavi Khomeini was a Muslim cleric and Marja, and the political leader of the 1979 Islamic Revolution of Iran which overthrew Mohammad Reza Pahlavi, the last Shah of Iran.

Khomeini was a marja or marja al-taqlid ("source of emulation", also known as a Grand Ayatollah) in Twelver Shi'a Islam, but is most famous for his political role. In his writings and preachings ...