On August 21, 1944, the Washington Conversations on International Peace and Security opened in the Dumbarton Oaks mansion in Washington, DC, USA. From the opening of the conference until its close on October 7, representatives of the US, USSR, the UK, and the Republic of China laid the groundwork for the United Nations and the post-WWII world.

Learn more about the Dumbarton Oaks Conference from the United Nations.