During the time of the Mandatory Palestine, the Balfour Declaration signed in 1917, stated that the government of Great Britain supported the establishment of a "Jewish national home" in Palestine. This exacerbated tensions between the Arabs living in Mandate Palestine and the Jews who emigrated there during the Ottoman period. Signed in January 1919, the Faisal–Weizmann Agreement promoted Arab-Jewish cooperation on the development of a Jewish national homeland in Palestine and an Arab nation in a large part of the Middle East, though this event had little to no effect on the conflict.

In 1920, the San Remo conference largely endorsed the 1916 Anglo-French Sykes–Picot Agreement, allocating to Britain the area of present day Jordan, the area between the Jordan River and the Mediterranean Sea, and Iraq, while France received Syria and Lebanon. In 1922, the League of Nations formally established the British Mandate for Palestine and Transjordan, at least partially fulfilling Britain's commitments from the 1915–16 McMahon–Hussein Correspondence by assigning all of the land east of the Jordan River to the Emirate of Jordan, ruled by Hashemite king Abdullah but closely dependent on Britain, leaving the remainder west of the Jordan as the League of Nations Mandatory Palestine. While the British had made promises to give both Arabs and Jews land, the British claimed they had never promised to give either side all of the land. Rising tensions had given way to violence, such as the 1920 Nebi Musa riots, and Jaffa riots of 1921. To assuage the Arabs, and due to British inability to control Arab violence in the Mandatory Palestine any other way, the semi-autonomous Arab Emirate of Transjordan was created in all Palestinian territory east of the Jordan river (roughly 77% of the mandate).

The conflicting forces of Arab nationalism and the Zionist movement created a situation