What event triggered the 1979 Iranian hostage crisis

The Iran hostage crisis was a diplomatic standoff between the United States and Iran. Fifty-two American diplomats and citizens were held hostage for 444 days from November 4, 1979, to January 20, 1981, after a group of Iranian college students belonging to the Muslim Student Followers of the Imam's Line, who supported the Iranian Revolution, took over the U.S. Embassy in Tehran.

Western media described the crisis as an "entanglement" of "vengeance and mutual incomprehension." American President Jimmy Carter called the hostage-taking an act of "blackmail" and the hostages "victims of terrorism and anarchy." In Iran it was widely seen as an act against the U.S. and its influence in Iran, including its perceived attempts to undermine the Iranian Revolution and its longstanding support of the Shah of Iran, Mohammad Reza Pahlavi, who was overthrown in 1979.

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