If history is any guide, skepticism about any new U.S.–Iran peace agreement is understandable. Over the past four decades, Washington and Tehran have repeatedly reached limited understandings, only to see them unravel under political pressure, military crises, or disputes over implementation. The central problem has rarely been signing an agreement—it has been sustaining one. 1979–1981: The Hostage Crisis and the Algiers Accords Relations between the two countries collapsed after the 1979 Iranian Revolution, when Iranian students seized the U.S. Embassy in Tehran and held 52 American diplomats hostage for 444 days. The crisis ended with the Algiers Accords in January 1981, under which Iran released the hostages while the United States agreed to unfreeze Iranian assets and pledged not to intervene in Iran's internal affairs. Although the agreement resolved the hostage crisis, it did not normalize diplomatic relations. Instead, both countries continued decades of sanctions, proxy co...