Dumbarton Oaks

The Dumbarton Oaks Conference (officially the "Washington Conversations on International Peace and Security Organization") was held from 21 August to 7 October 1944 at the Dumbarton Oaks estate in the Georgetown neighborhood of Washington, D.C. It was convened by the United States to negotiate the institutional architecture of the post-war organization that would replace the League of Nations.

Because the Soviet Union had not yet declared war on Japan and Moscow refused to sit at the same table as the Republic of China, the conference proceeded in two phases: the US, UK, and USSR met first (21 August – 28 September), followed by talks among the US, UK, and China (29 September – 7 October). The principal delegates were Edward Stettinius (US), Sir Alexander Cadogan (UK), Andrei Gromyko (USSR), and Wellington Koo (China).

The resulting "Dumbarton Oaks Proposals" sketched the core features that would later appear in the UN Charter:

• A General Assembly of all members
• A Security Council with permanent and non-permanent members holding primary responsibility for international peace and security
• An International Court of Justice
• A Secretariat headed by a Secretary-General
• An Economic and Social Council

Two major issues were deliberately deferred: the scope of the great-power veto in the Security Council, and the question of which Soviet republics would receive separate membership. These were resolved at the Yalta Conference in February 1945, where the "Yalta formula" on voting was agreed, and finalized at the San Francisco Conference (25 April – 26 June 1945), which produced the UN Charter signed on 26 June 1945.

Dumbarton Oaks is significant because it locked in the great-power-centric design of the UN — particularly the privileged role of the P5 — before smaller and middle powers were brought into the drafting process at San Francisco, where many lobbied (with limited success) to constrain the veto.