In Sept. 1915 (Sept. 5 and 8) there was held at Zimmerwald in Switzerland the first conference of European Socialists who were opposed to the imperialistic war. Thirty-one delegates were present. ###>Du 5 au 8.9.1915 se tint la première conférence de Zimmerwald, réunissant les socialistes européens opposés à la guerre. 31 délégués étaient présents.