The "Canadian Caper" was the joint covert rescue by the Canadian government and the CIA of six American diplomats who had evaded capture during the seizure of the United States embassy in Tehran, Iran, on November 4, 1979, after the Iranian Revolution, when Islamist students took most of the American embassy personnel hostage, demanding the return of the US-backed Shah for trial.
Americans were grateful for Canadian aid in sheltering and rescuing American diplomats during the Iran hostage crisis of 1980.