PLEASE HURRY ASAP A timeline of the start of the Iranian Revolution from 1978 to 1979. The shah of Iran went into exile in January 1979. Ayatollah Khomeini returned from exile and came into power in February 1979. The shah was admitted to the U S for medical treatment in October 1979. Iranian students seized the U S embassy in Tehran in November 1979. The Iranian Revolution was from January 1978 to February 1979. Who was in charge of the government of Iran during the hostage crisis? the shah a group of Iranian students the US government Ayatollah Khomeini