On November 29, 1947 the United Nations adopted Resolution 181 (also known as the Partition Resolution) that would divide Great Britain’s former Palestinian mandate into Jewish and Arab states in May 1948 when the British mandate was scheduled to end. Under the resolution, the area of religious significance surrounding Jerusalem would remain a corpus separatum under international control administered by the United Nations.
Although the United States backed Resolution 181, the U.S. Department of State recommended the creation of a United Nations trusteeship with limits on Jewish immigration and a division of Palestine into separate Jewish and Arab provinces but not states. The State Department, concerned about the possibility of an increasing Soviet role in the Arab world and the potential for restriction by Arab oil producing nations of oil supplies to the United States, advised against U.S. intervention on behalf of the Jews. Later, as the date for British departure from Palestine drew near, the Department of State grew concerned about the possibility of an all-out war in Palestine as Arab states threatened to attack almost as soon as the UN passed the partition resolution.
Despite growing conflict between Palestinian Arabs and Palestinian Jews and despite the Department of State’s endorsement of a trusteeship, Truman ultimately decided to recognize the state Israel.