After graduation, he remained in the US and worked as an entrepreneur. Around 1970 Entezam's mother was dying and he returned to Iran to be with her. Because of his earlier political activities, the Shah's Intelligence Service would not allow him to return to the U.S. He stayed in Iran, marrying, becoming a father and developing a business in partnership with his friend and mentor,
Mehdi Bazargan. Bazargan appointed him as the head of the political bureau of the
Freedom Movement of Iran in December 1978, replacing
Mohammad Tavasoli. In 1979, the Shah was overthrown by the
Iranian Revolution. Revolutionary leader Ayatollah Khomeini, recently returned to Iran, appointed Bazargan as prime minister of
the provisional revolutionary government. "Bazargan asks Entezam to be the deputy prime minister and the official spokesperson for the new government." In 1979, Entezam "succeeded in having the majority of the cabinet sign a letter opposing the Assembly of Experts", which was drawing up the new theocratic constitution where democratic bodies were subordinate to clerical bodies. His theocratic opponents attacked him and in August 1979 Bazargan "appointed Entezam to become Iran's ambassador to
Denmark." ==Imprisonment==