 The fragile British control over Fārs was disrupted in May 1918 when Ṣawlat-al-Dawla, leading the Qashqais and other pro-German tribal forces from Kazerun, Dashti, Dashtestan and Tangestan, embarked upon a war against the British.Eventually, Ṣawlat-al-Dawla’s uprising subsided due to the spread of influenza and British pressure.In late 1920 Mohammad Mossadegh, the new governor-general of Fārs, reinstated Ṣawlat-al-Dawla to the office of īlḵānī.