The beginning of the end of the Iran hostage crisis occurred on September 12th, 1980, as Ayatollah Khomeini announced four conditions for the release of the hostages.
The conditions were these:
The shah's American fortune, amounting to billions of dollars, was to be remitted to the Iranian government. American claims against Iran in the International Court of Justice were to be nullified. Iranian assets frozen in American banks were to be released. The United States was to promise never to interfere with Iran's affairs.