The Hashemite Kingdom of Iraq was the Iraqi state located in the Middle East from 1932 to 1958. It was founded on 23 August 1921 as the Kingdom of Iraq, following the defeat of the Ottoman Empire in the Mesopotamian campaign of the First World War. Although a League of Nations mandate was awarded to the United Kingdom in 1920, the 1920 Iraqi revolt resulted in the scrapping of the original mandate plan in favour of a formally sovereign Iraqi kingdom, but one that was under effective British administration. The plan was formally established by the Anglo-Iraqi Treaty.
The role of the United Kingdom in the formal administration of the Kingdom of Iraq was ended in 1932, following the Anglo-Iraqi Treaty (1930). Now officially a fully independent kingdom, officially named the Hashemite Kingdom of Iraq, it underwent a period of turbulence under its Hashemite rulers throughout its entire existence. Establishment of Sunni religious domination in Iraq was followed by Assyrian, Yazidi and Shi'a unrests, which were all brutally suppressed. In 1936, the first military coup took place in the Hashemite Kingdom of Iraq, as Bakr Sidqi succeeded in replacing the acting Prime Minister with his associate. Multiple coups followed in a period of political instability, peaking in 1941.