On February 21, 1921, Rezâ Khân, backed by the Cossack Brigade, staged a coup d’etat. He occupied Tehran, declared martial law, and installed a pro-British politician, Sayyid Ziâ-od-Din Tabâtabâi as prime minister. Rezâ Khân became commander of the army and minister of war. Tabâtabâi proved to be a disaster as prime minister. He made enemies […]