League of Nations and British Mandate: The San Remo Conference (1922)

From the very first days of military government under General Allenby, the British leave no doubt that they have no intention of sharing sovereignty over the Holy City with France or any of the other erstwhile protectors of the Christian minorities.
The first order of business is to keep the municipal institutions running that had already been established under the Ottomans and to turn Jerusalem into the seat of government of an efficient quasi-colonial administration.

Great Britain's hold on Palestine received international legitimization on April 24, 1920, when the San Remo Conference of the victorious powers of the First World War and member states of the League of Nations (predecessor of the United Nations Organization) decide to assign the League of Nations' mandate for Palestine to Britain. The text of this agreement is confirmed by the Council of the League of Nations on July 24, 1922 and goes into force in September 1923. (Agreement of the San Remo Conference.) This indicates the transition from military government to civil administration. The first High Commissioner of the British Mandate is Sir Herbert Samuel, a Jew.

Since the San Remo conference explicitly confirms the Balfour declaration of 1917, Britain is immediately confronted with the the fears of Palestinian nationalists that the British intended to make Palestine into a Jewish state. In order to allay such fears, a White Paper was published in 1922, spelling out how the British imagined Jewish and Arab coexistence in Palestine.