This documentary describes the American intelligence failure on the upcoming Iranian revolution. This interview of American and Canadian diplomats, intelligence agents, journalists and others who witnessed the transformation of Iran from the dynasty of the Shah to complete chaos under the Iranian Revolution and the capture of the US embassy. This movie describes how they were able to sneak out eight Americans through the Canadian embassy.
The movie ARGO is a Hollywood version of this Escape Plan and execution to successfully get eight members of the US Embassy pretending to be a film crew and having Canadian passports.
I can't believe that the British didn't want to help but the Swiss and the Canadians did!
Canada shut down its Embassy in Tehran in September, 2012 due to the Iranian government was harassing Iranian expatriates in Canada.