Ahmad Moshir al-Saltaneh ( Persian : احمد مشیرالسلطنه ‎;6 July 1844 in Amol – 20 April 1918 in Tehran ), also known Moshir al-Saltaneh and Mirza Ahmad Khan Moshir al-Saltaneh was a Prime Minister of Iran during the Qajar era . He served as prime minister twice and served as minister of interior. He was also Iran's Justice minister .