British Mandate of Mesopotamia in the context of "San Remo Conference"

The Kingdom of Iraq under British Administration, or Mandatory Iraq (Arabic: الانتداب البريطاني على العراق, romanized: al-Intidāb al-Brīṭānī ʿalā l-ʿIrāq), was created in 1921, following the 1920 Iraqi Revolution against the proposed British Mandate of Mesopotamia, and enacted via the 1922 Anglo-Iraqi Treaty and a 1924 undertaking by the United Kingdom to the League of Nations to fulfil the role as Mandatory Power.

Faisal ibn Husayn, who had been proclaimed King of Syria by a Syrian National Congress in Damascus in March 1920, was ejected by the French in July of the same year. Faisal was then granted by the British the territory of Iraq, to rule it as a kingdom, with the British Royal Air Force (RAF) retaining certain military control, but de facto, the territory remained under British administration until 1932.

The Anglo-Iraqi Treaty of 1930 was a treaty of alliance between the United Kingdom of Great Britain and Northern Ireland and the British-Mandate-controlled administration of the Hashemite Kingdom of Iraq. The treaty was between the governments of George V the United Kingdom and Faisal I of Iraq. High Commissioner Francis Humphrys signed for the United Kingdom and Prime Minister Nuri as-Said signed for Iraq. The 1930 treaty was based upon an earlier Anglo-Iraqi Treaty of 1922 but took into account Iraq's increased importance to British interests given new oil finds made in 1927.