The cabinet led by Prime Minister Hassan Ali Mansur was inaugurated on 7 March 1964. It replaced the second government of Asadollah Alam. Mansur's cabinet was the first of party-governments in Iran. It was led by the Iran Novin Party and was approved by the Majlis on 8 March. It enjoyed nearly full confirmation at the Majlis, including the members of the opposition party, People's Party. The cabinet's term ended in January 1965 when Hassan Ali Mansur was assassinated. Next cabinet was formed by Amir Abbas Hoveyda.