Anniversary: Iran's 1979 Revolution

Protesters hold a portrait of Ayatollah Ruhollah Khomeini during the 1979 revolution.

Iranian demonstrators in Tehran show support for the return of Ayatollah Ruhollah Khomeini.

Khomeini greets supporters on February 1, 1979, the day of his return from exile in France.

Supporters of the Islamic revolution demonstrate in Tehran, February 1979.

Khomeini at the Behesht Zahra cemetery on the day he returned from Paris, February 1, 1979.

Some one million people gather in Freedom Square in Tehran as the Iranian Revolution begins in 1979.

Women hold portraits of Khomeini in 1979.

Supporters of the Islamic revolution demonstrate in Tehran in 1979.

Large fires erupted in Tehran during the fall of Shah Reza Pahlavi's regime in February 1979.

Islamist students take over the U.S. embassy in support of the Iranian revolution in November 1979.

American hostages in Iran during seizure of the U.S. embassy by Islamist students.

Khomeini introduces Mehdi Bazargan as interim prime minister during the Islamic revolution in February 1979.

The front page of the "Kayhan" newspaper on February 11, 1979, dedicated to Iran's revolution.