In April 1947 the British government requested a special session of the U.N. General Assembly to discuss Palestine, over which it had been assigned a mandate by the League of Nations in 1917. Per the terms of that mandate, increasing numbers of Jews had settled in Palestine, and conflicts between them and Arabs had escalated.
The General Assembly created a Special Committee on Palestine to investigate the situation and Secretary-General Trygve Lie appointed Ralph Bunche as assistant to his representative on the committee. In a June 1947 letter to C.H. Rieber, a former dean and professor at UCLA, Bunche mentioned the beginning of this assignment: "I had planned to visit California this summer and I certainly intended to get in touch with you . . . . But now my summer plans have been re-arranged for me, since I have been assigned to accompany the United Nations mission to Palestine. . . . I will need on this mission all of the philosophy, vision and patience which you and McIlwain [Charles Howard McIlwain, a political philosophy professor; Bunche considered him his best teacher at Harvard University] taught me -- and more." Bunche worked with the committee throughout the summer, drafted its majority and minority reports, then returned to his responsibilities in the Trusteeship Division.
A contentious General Assembly vote on November 29, 1947, approved the establishment of separate Arab and Jewish states following the withdrawal of British troops and created a commission to manage the transition, to which Bunche was appointed. Representatives from Arab and Muslim countries voted against it, then walked out, and a three-day general strike followed in Palestine.
On August 4, 1949, Bunche reported the completion of the mission in Palestine to the U.N. Security Council and requested that remaining responsibilities be transferred to the ongoing operations of the Palestine Conciliation Committee. A press release issued by the U.N. with the text of his statement marked what he hoped was the end of this assignment.