World Religions › Contemporary › Islamic revival and political Islam
Iranian Revolution
1979· Event· Judaism, Christianity & Islam
Historical recordConfirmed by archaeology, outside sources or contemporary records.
The 1979 revolution that overthrew Iran's Shah and created an Islamic Republic ruled by Shia clergy.
See it on the World Religions map →What it is
Mass protests in 1978 united clerics, leftists, liberals and bazaar merchants against Shah Mohammad Reza Pahlavi's autocratic, Western-backed rule. The Shah fled in January 1979; Ayatollah Ruhollah Khomeini returned from 14 years in exile on February 1. A referendum approved an Islamic Republic. Its constitution enshrined velayat-e faqih, 'guardianship of the jurist', giving final authority to a senior cleric, the Supreme Leader. That November, students seized the US embassy and held 52 Americans for 444 days.
Why it matters
It was the first modern revolution made in religion's name, created a Shia theocracy that still rules about 90 million Iranians, and inspired Islamists far beyond Iran.
Sources and history
Khomeini's lectures 'Islamic Government' (1970), the 1979 constitution, referendum results, press and diplomatic records, and memoirs from all sides.
Questions and debates
Historians debate why a broad coalition ended under clerical rule, and whether the regime today is driven more by ideology or by plain authoritarian survival.
Connections (4)
▸Iranian Revolution intensified persecution of Bahá'í FaithHistorical record
The connection
Iran's largest non-Muslim minority, about 300,000 Bahá'ís, was already disliked by clerics who saw a faith after Muhammad as heresy. The Islamic Republic executed more than 200 Bahá'ís, mostly in 1979–85, including ten women hanged in Shiraz in 1983. It destroyed holy sites, seized property and barred Bahá'ís from universities.
When and where
Iran, from 1979, peaking 1980–85; a 1991 government memorandum on 'blocking their progress'; seven community leaders jailed in 2008.
Historical evidence
UN human rights reports, Amnesty International records, the leaked 1991 memorandum, and Iranian court documents.
Questions and debates
Iran denies religious persecution and accuses Bahá'ís of spying for Israel, citing their world center in Haifa, which exists because the Ottomans exiled Bahá'u'lláh to nearby Acre.
▸Iranian Revolution energized Islamic revival and political IslamHistorical record
The connection
The revolution showed Islamists across the Muslim world that a secular, Western-backed ruler could fall. Iran backed Hezbollah in Lebanon from 1982 and issued Khomeini's 1989 death decree against novelist Salman Rushdie. It also sharpened Saudi–Iranian and Sunni–Shia rivalry.
When and where
Tehran, 1979; Ayatollah Khomeini; Hezbollah, 1982; the Rushdie fatwa, February 14, 1989.
Historical evidence
Khomeini's writings, the 1979 constitution, Iranian state records, and studies such as Vali Nasr's 'The Shia Revival' (2006).
Questions and debates
Historians debate whether 1979 was mainly a religious revolution or a broad political revolt that the clergy captured.
▸Iranian Revolution sharpened Sunni and Shia splitMostly agreed by scholars
The connection
The 1979 revolution created a Shia-led Islamic republic that sought to export its revolution, alarming Sunni-led Gulf monarchies, above all Saudi Arabia. The rivalry fed proxy conflicts in Iraq, Lebanon, Syria, Bahrain and Yemen, where political and sectarian lines often coincided, though both sides also claimed to speak for all Muslims.
When and where
Iran, 1979, then across the Middle East: the Iran–Iraq War (1980–88), Lebanon's Hezbollah (1982), Iraq after 2003, Syria and Yemen from 2011.
How do we know?
Diplomatic records, leaders' speeches, and studies of Iranian support for Shia groups and Saudi funding for Sunni ones document the rivalry.
Questions and debates
Many scholars argue the rivalry is mainly geopolitical, with sectarian identity used as a tool, rather than a revival of a 1,400-year-old religious feud.
▸Iranian Revolution drew on the Shia memory of Battle of Karbala and the death of HusaynMostly agreed by scholars
The connection
Revolutionaries cast the Shah as Yazid and protesters as Husayn's companions, turning Karbala into a script for resistance. Shia mourning held 40 days after each death drove a cycle of protests in 1978, and huge Ashura marches that December showed the Shah had lost the streets. 'Every day is Ashura, every land is Karbala' became a slogan.
When and where
Iran, 1978–79, drawing on thinkers like Ali Shariati and Ayatollah Khomeini; the Tasua and Ashura marches of December 10–11, 1978.
How do we know?
Revolutionary speeches, slogans and posters, and eyewitness reporting on the 40-day mourning cycles and the Ashura marches in Tehran.
Questions and debates
Scholars debate how much religion, versus economic grievance and nationalism, drove the revolution; the Karbala imagery united people of very different politics.