Seyyed Mohammad Ali Keshavarz Sadr ( Mahallat , 1902 – 17 October 1974) was a lawyer, judge, author and leading figure in the National Front of Iran . A close friend and associate of Prime Minister Mohammad Mosaddegh , often acting as his official deputy, he nationalised the Iranian fishing industry and played a major role in the nationalization of the Iranian oil industry . He served as governor of Isfahan , Gilan and Tehran . He entered parliament as representative of Khorramabad . After resisting the 1953 Iranian coup d'état which toppled the democratically elected government of Mossadegh, Keshavarz Sadr was imprisoned and tortured. After his release he became spokesperson of the Second National Front and wrote a range of books.