International Crimes: Theories Practice and Evolution is unique in that it proposes a theory of international criminal law by questioning the law itself. The analysis focuses on particular definitional aspects of international crimes in order to highlight their similarities as well as the defects of the relevant instruments and to ultimately stress the need for change and the feasibility of such a proposal. The recurring theme of the book is the idea that international criminal law is not, and should not be considered, as a static legal corpus. Rather, it should be acknowledged that the different crimes it covers interact greatly and could, and should, influence one another in order to reinforce, or enforce, the implementation and effectiveness of international criminal law. By exploring methods of improvement of international criminal law, this book addresses both theoretical issues as well as practical matters and, in that respect, will be of interest to both academics and practitioners.