In November 2002, legal experts from the academic world, defence ministries and the military, gathered in The Hague for a two-day conference, entitled 'Terrorism and the Military: International Legal Implications'. The discussions centred on three themes: Ius ad Bellum, the laws governing the use of force; Ius in Bello, the laws governing the conduct of hostilities and Criminal law. This volume contains the proceedings of this highly informative conference, including the discussions, syntheses and an overall conclusion.