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Diplomat and author Richard Holbrooke served in the United States Foreign Service for over four decades, holding numerous high-ranking positions including U.S. Assistant Secretary of State for East Asian and Pacific Affairs and U.S. Ambassador to the United Nations. He is best known for his work in the Balkans during the 1990s, where he served as the chief negotiator for the Dayton Peace Accords that ended the Bosnian War.