Jan Bloch is a classic example of an upwardly-mobile, nineteenth century Jew. Bloch worked his way up from humble eastern European Jewish origins in central Poland to become one of the Russian Empire’s leading entrepreneurs. However, Bloch’s initiatives to overcome war represent his greatest service. He lent impetus to the Hague Peace Conference. In his standard work “The Future of War”, he called for a departure from Clausewitz and advocated arms control as well as an international court of justice. This book deserves its place as a classic work of historical peace research.