He also served as the Chilean Ambassador to Uruguay , Brazil , Haiti , Panama , the Dominican Republic , and Peru at different periods of his diplomatic career . He was also Chile 's delegate in the United Nations Conference on International Organization in 1945 . He subsequently served as the Chilean representative at the United Nations , before becoming the President of the United Nations General Assembly in 1954 . He was subsequently the Chilean Ambassador to Argentina from 1957 to 1958
United Nations Conference on International Organization
United Nations Conference on International Organization
José Maza Fernández