Question: Who was an  intellectual and diplomat, he held various academic posts and served as a Goodwill Ambassador for UNICEF and President of the World Federalist Movement, Billy Bob Thornton or Peter Ustinov?
Sentence (from "World Federalist Movement"): The organization was created in 1947 by those concerned that the structure of the new United Nations was too similar to the League of Nations which had failed to prevent World War II, both being loosely structured associations of sovereign nation-states, with few autonomous powers.
Relevant evidence: No