This situation led Reza Khan to decide on an attempt at putting an end to the chaos by taking over power and forming a strong government, bolstered by an effective and disciplined military force. He enlisted some young progressive Iranian elements and also received some encouragement from British diplomats for the endeavour. On February 21, 1921, he occupied Tehrān at the head of 1,200 men. A young journalist, Sayyid Zia al-Din Tabatabaʾi, became prime minister, while Reza Khan took command of all the military forces and was appointed minister of war a few weeks after.