Dumbarton Oaks Conference, prelude to the United Nations, begins.

The Dumbarton Oaks Conference, or, more formally, the Washington Conversations on International Peace and Security Organization, 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. The conference was led by the Four Policemen – the United States, the United Kingdom, the Soviet Union, and China. It was held at the Dumbarton Oaks estate in Washington, D.C., from August 21, 1944, to October 7, 1944.

The United Nations (UN) is the global intergovernmental organization established by the signing of the UN Charter on 26 June 1945 with the articulated mission of maintaining international peace and security, to develop friendly relations among states, to promote international cooperation, and to serve as a centre for harmonizing the actions of states in achieving those goals.