In 1943 Pasvolsky was placed in charge of International Organization and Security Affairs in the State Department with responsibility for drafting the United Nations Charter ; he was present at Bretton Woods and Dumbarton Oaks . He became chairman of the Coordination Committee at the San Francisco United Nations Conference on International Organization , where the charter was negotiated and signed . Secretary Hull depended heavily on Pasvolsky to explain the plans and proposals for the UN to President Roosevelt . Craufurd Goodwin writes " It is striking how close a resemblance Pasvolsky 's statement of objectives for the new international organization bears to the positions he had taken with Moulton throughout the previous decade . " Another important innovation at Dumbarton Oaks was the Economic and Social Council . Pasvolsky and the new Secretary of State Edward Stettinius , Jr. managed to persuade Roosevelt to drop his idea of adding Brazil as a sixth member of the Security Council . Pasvolsky opposed an absolute veto by permanent members on all Security Council discussions and resolutions as giving these big states too much power , while Hull and the Soviets supported it . His persistence on this issue persuaded Hull and eventually the Soviets to limit the veto to substantive matters only – not allowing it on procedural ones including discussions
United Nations Conference on International Organization
United Nations Conference on International Organization
Leo Pasvolsky