The United Nations San Remo Conference in 1920:
It included the the Allied Supreme Council - which included Britain, France, Italy, Greece, Japan, and Belgium.
They upheld and expanded the Sykes-Picot Agreement, dividing the Ottoman Empire's territories between France and Britain.
In April 1920, the conference decided to hand over the rule of the Land of Israel to Great Britain in a mandate.
The conference decided to include the Balfour Declaration in the mandate and assign Britain the responsibility for implementing the declaration.
The League of Nations mandate had a binding international legal status.
Thus, the legal rights arising from it are still valid until today.
In 1937, Great Britain formed the Peel Commission in response to the Great Arab Revolt during the British mandate.
The commission aimed to investigate the reasons for the revolt and address the Arab-Jewish conflict.
The commission recommendation was to divide the land of Israel into a Jewish and an Araba state, But this offer was rejected by the Arab leadership.
In June 1947, UNESCO convened the UNSCOP commission to end the British Mandate in the Land of Israel.
It recommended dividing the land into two states, to be joined by economic union - marking the first proposal for an Arab state within Israel's territory, without it being annexed to neighboring Arab countries.
On 29 November 1947 the UN General Assembly voted on the partition plan, adopted by 33 votes to 13 with 10 abstentions.
The Jewish side accepted the UN plan for the establishment of two states.
The Arabs rejected it and launched a war of annihilation against the Jewish state.
It was this war that led to the establishment of Israel in the territories that it claimed during the war.