This work represents an analysis of and a reflection on the new challenges of humanitarian law in armed conflicts. It covers the jurisprudential dimension not only of the International Court of Justice, but also all the different legal bodies, including the ad hoc tribunals created by the United Nations. It analyses the purely doctrinal dimension of general aspects such as the solutions to world disorder in this field, the relationship between jus in bello and jus ad bellum, the principles of universal and international jurisdiction, and the notion of justice and peace. More concrete aspects include the situation of foreigners and journalists in armed conflicts, terrorist acts in terms of international humanitarian law and sexual violence as a war crime. Despite the range of themes addressed, they are all linked with the essential theme of the book, The New Challenges of Humanitarian Law in Armed Conflicts.