The Dumbarton Oaks Conference, formally, the Washington Conversations on International Peace and Security Organization, is held at the Dumbarton Oaks estate in Washington, D.C. It was an international conference at which proposals for the establishment of a "general international organization", which was to become the United Nations, were formulated and negotiated; following up on the commitment made at the Moscow Conferences of 1943 to create an international organization to succeed the League of Nations.
A little more than a year later, on 24 October 1945. the United Nations officially came unto existence after its Charter had been ratified by China, France, the Soviet Union, the United Kingdom, the United States and by a majority of other signatories with a total number of 51 founding members.
The Dumbarton Oaks Conference, conversations were held in two phases, since the Soviets were unwilling to meet directly with the Chinese. In the first phase, representatives of the Soviet Union, the United Kingdom, and the United States convened between August 21 and September 28. In the second, representatives of Republic of China, the United Kingdom, and the United States held discussions between September 29 and October 7.