This book describes Mussolini´s little-known radical ideology, including his activities in Switzerland, relationship with revolutionary syndicalism, and radical journalism. It provides an in-depth treatment of the young Benito Mussolini as a revolutionary Socialist and describes the political maneuverings that took a major European Socialist party by storm before the First World War. It explains the process of how he came to dominate Italian Socialism until the crisis caused by Italy´s intervention in World War I. It illuminates Mussolini´s leadership qualities and his rise to leader of the Italian Socialist Party.