History of the Mujahideen-e Khalq (MEK)

Although Khomeini had misgivings about the MEK's ideology, he allied with the MEK during the 1970s against the Shah. After the fall of the Shah, Khomeini had little use for the MEK. The MEK was then joined by other groups that opposed the new constitution, including the People’s Fedayeen and the Muslim People’s Republican Party. Despite the opposition, the 3 December 1979 referendum vote approved the new constitution.