Estournelles de Constant, Paul Henri Benjamin, baron d' (pōl äNrēˈ bäNzhämăNˈ bärôNˈ dātōrnĕlˈ də kôNstäNˈ) [key], 1852–1924, French diplomat and pacifist. He wrote and spoke tirelessly in favor of disarmament and international conciliation, was a delegate to the Hague peace conferences (1899 and 1907), and was awarded the 1909 Nobel Peace Prize jointly with Auguste Beernaert.
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