Dumbarton Oaks Conference

The Dumbarton Oaks Conference was held from 21 August to 7 October 1944 at the Dumbarton Oaks estate in Georgetown, Washington, D.C. It brought together delegations from the United States, the United Kingdom, the Soviet Union, and the Republic of China to negotiate the structural outline of a postwar international organization to succeed the League of Nations.

Because the Soviet Union was not yet at war with Japan and Moscow refused to sit at the same table as the Chinese delegation, the conference ran in two phases: the US–UK–USSR talks (August–September), followed by US–UK–China talks (late September–October). The American delegation was led by Under Secretary of State Edward Stettinius, the British by Sir Alexander Cadogan, the Soviet by Ambassador Andrei Gromyko, and the Chinese by Ambassador Wellington Koo.

The resulting "Proposals for the Establishment of a General International Organization" laid out the core architecture later adopted at San Francisco in 1945:

• A General Assembly of all member states.
• A Security Council with permanent and non-permanent members holding primary responsibility for international peace and security.
• A Secretariat headed by a Secretary-General.
• An Economic and Social Council and an International Court of Justice.
• Provisions on the peaceful settlement of disputes and enforcement action, foreshadowing Chapters VI and VII of the UN Charter.

Two major issues were left unresolved: the voting formula in the Security Council (the great-power veto) and the question of initial membership, particularly Soviet demands for seats for its constituent republics. These were settled at the Yalta Conference in February 1945, where the "Yalta formula" on the veto was agreed.

The proposals were published on 9 October 1944, debated publicly for several months, and served as the working draft at the United Nations Conference on International Organization in San Francisco (25 April – 26 June 1945), which produced the UN Charter.