The Iranian Revolution (1979)

In Operation Ajax, the CIA and MI6 orchestrate a coup that overthrows Prime Minister Mohammad Mossadegh, who had nationalized Iran's British-owned oil industry. The coup reinstates the Shah with expanded powers and sets the stage for decades of authoritarian rule, suppression of dissent, and deep anti-Western resentment.

Mohammad Reza Pahlavi announces the White Revolution, an ambitious program of land reform, women's suffrage, literacy campaigns, and modernization. While it transforms Iranian society, it also displaces traditional elites, alienates the Shia clergy, and concentrates power in the monarchy, creating widespread social dislocation.

Ayatollah Ruhollah Khomeini, a prominent Shia cleric, delivers a fiery speech denouncing the Shah's alliance with Israel and the United States, and his subordination of Iran's religious establishment. The speech triggers massive protests that are violently suppressed; the Shah's forces kill hundreds. Khomeini is arrested, then exiled in 1964.

An article denouncing Khomeini published in a government-controlled newspaper sparks protests by religious students in the holy city of Qom. Security forces open fire, killing several protesters. The deaths trigger a cycle of mourning and protest every 40 days (the traditional Shia mourning period), spreading the uprising across Iran.

A fire at the Cinema Rex in Abadan kills approximately 400 people who were locked inside a movie theater. While the fire was set by Islamist militants, widespread rumors blame SAVAK, the Shah's secret police. The atrocity galvanizes national outrage and becomes a rallying point for the revolutionary movement.

The Shah declares martial law in major cities. In Tehran's Jaleh Square, troops open fire on a massive demonstration, killing an estimated 88 to several hundred people. The event, known as Black Friday, ends any possibility of compromise and solidifies the determination of the opposition to overthrow the monarchy entirely.

A nationwide general strike led by oil workers, bazaar merchants, and government employees cripples Iran's economy. Oil exports -- the lifeblood of the Iranian economy -- grind to a halt. The Shah's government loses control over the country as the military faces defections and soldiers refuse to fire on protesters.

Facing an unstoppable uprising and abandoned by the United States, the Shah appoints opposition figure Shapour Bakhtiar as prime minister and departs Iran for exile, ostensibly for a "vacation abroad." Crowds in Tehran tear down statues of the Shah and celebrate in the streets. The 2,500-year-old Persian monarchy effectively ends.

After 14 years in exile (in Turkey, Iraq, and France), Ruhollah Khomeini returns to Tehran on a chartered Air France flight. An estimated 6 million people line the streets to greet him. He appoints Mehdi Bazargan as prime minister of a provisional government, rejecting Bakhtiar's authority.

After two days of armed street battles between revolutionaries and the Imperial Guard, the Supreme Military Council declares neutrality and withdraws its forces to barracks. Bakhtiar resigns and goes into hiding. The Pahlavi dynasty is overthrown. Khomeini's revolutionaries control the country.

In a national referendum, Iranians vote overwhelmingly (98% approval) to replace the monarchy with an Islamic Republic. The referendum offers voters a yes/no choice between the monarchy and the Islamic Republic, with no alternative options. The new government begins drafting a theocratic constitution under Khomeini's direction.

Fifty-two American diplomats and citizens are taken hostage by a group of Iranian students who overrun the US Embassy in Tehran. They demand the extradition of the Shah from the United States for trial. The hostage crisis continues for 444 days, leading to the severing of US-Iran diplomatic relations and a failed rescue attempt, and it shapes the Islamic Republic's anti-American identity.