The Third Anglo-Afghan War ended with the United Kingdom signing a treaty to recognise the independence of the Emirate of Afghanistan.

The Third Anglo-Afghan War, also known as the Third Afghan War, the British-Afghan War of 1919, and in Afghanistan as the War of Liberation, was a short war which began on 3 May and ended on 8 August 1919. The new Emir of the Emirate of Afghanistan Amanullah Khan declared the holy war of Jihad against the British in the hope to proclaim full independence, as well as to strengthen his own legitimacy. Amanullah's forces invaded British India on three fronts taking advantage of the unrest in India, in an effort to seize the old Afghan provinces west of the Indus River.