In May 1945 he was a member of the French Delegation under General Charles de Gaulle and attended the United Nations Conference on International Organization ( UNCIO ) , a convention of delegates from 50 Allied nations that took place from 25 April 1945 to 26 June 1945 in San Francisco , United States . At this convention , the delegates reviewed and rewrote the Dumbarton Oaks agreements
United Nations Conference on International Organization
United Nations Conference on International Organization
Robert Mouzillat