Ayatollah Ruhollah Musavi Khomeini was an Iranian Islamic revolutionary, politician, and religious leader who served as the first supreme leader of Iran from 1979 until his death in 1989. He was the founder of the Islamic Republic of Iran and the main leader of the Iranian Revolution, which overthrew Mohammad Reza Pahlavi and ended the Iranian monarchy.

Mohammad Reza Pahlavi, commonly referred to in the Western world as Mohammad Reza Shah, or just simply The Shah, was the last monarch of Iran. He began ruling the Imperial State of Iran after succeeding his father Reza Shah in 1941 and remained in power until he was overthrown by the 1979 Iranian Revolution, which abolished the country's monarchy and established the Islamic Republic of Iran. In 1967, he took up the title Shahanshah and held several others, including Aryamehr and Bozorg Arteshtaran.