The Iran hostage crisis was a diplomatic crisis between Iran and the United States. 52 American diplomats and citizens were held hostage for 444 days (November 4, 1979, to January 20, 1981) after a group of Iranian 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. The crisis was described by the Western media as an "entanglement" of "vengeance and mutual incomprehension." President Jimmy Carter called the hostages "victims of terrorism and anarchy" and said, "The United States will not yield to blackmail." In Iran, it was widely seen as a blow against the United States and its influence in Iran, including its perceived attempts to undermine the Iranian Revolution and its longstanding support of the recently overthrown Shah of Iran, Mohammad Reza Pahlavi, who had led an autocratic regime. Wikipedia
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