The Algiers Accords of January 19, 1981, were brokered by the Algerian government between the United States and Iran to resolve the Iran hostage crisis. The crisis arose from the takeover of the American embassy in Tehran on November 4, 1979, and the taking hostage of the American staff there. By this accord the 52 American citizens were set free and able to leave Iran.
Among its chief provisions are:
The US would not intervene politically or militarily in Iranian internal affairs
The US would remove a freeze on Iranian assets and trade sanctions on Iran