No American who was alive and alert in the early 1980s will ever forget the Iran hostage crisis. Militants stormed the U.S. embassy in Tehran, captured American diplomats and staff and held 52 of them captive for 444 days. In the United States, the television news program “Nightline” emerged to give nightly updates on the crisis, with anchorman Ted Koppel beginning each report by announcing that it was now “Day 53” or “Day 318” of the crisis. For Americans, still recovering from defeat in Vietnam, the hostage crisis was a searing ordeal. It stunned the nation and undermined Jimmy Carter’s presidency. Many Americans see it as the pivotal episode in the history of U.S.-Iranian relations.