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Eventually, with the departure of the Shah and the failure of the government of the national prime minister Shapur Bakhtiar, the return of Khomeini to the country on February 12, the formation of the interim government of Iran to the PM of Mehdi Bazargan on February 15, and finally two days of armed struggle of guerrilla organizations and thousands of armed volunteers with the Imperial Guard and The declaration of the impartiality of the army on February 22, 1357, won the revolution.
