In January 1979, the shah’s government collapsed and he and his family fled into exile. On 1 February, Khomeini returned to Iran in triumph. There was a national referendum and Khomeini won a landslide victory. He declared an Islamic republic and was appointed Iran’s political and religious leader for life. Islamic law was introduced across the country. His denunciation of American influence led to militant Islamic students storming the US Embassy in Teheran in November 1979. Some of the American hostages were held captive for more than a year.