This book challenges the traditional approach to international law by concentrating on international humanitarian law and placing the focus beyond States: it reflects on current legal, policy and practical issues that concern non-State actors in and around situations of armed conflict. With the emergence of the nation-State, international law was almost entirely focused on inter-State relations, thus excluding - for the most part - non-State entities. In the modern era, such a focus needs to be adjusted, in order to encompass the various types of functions and interactions that those entities perform throughout numerous international decision-making processes.The contributions that comprise this volume are oriented towards a broad readership audience in the academic and professional fields related to international humanitarian law, international criminal law, international human rights law and general public international law.