Gerhard Kemp is professor of criminal law and international criminal law at Stellenbosch University (South Africa), and advocate of the High Court of South Africa. He studied law at the universities of Stellenbosch, and Antwerp (Belgium). His research outputs (which include books, chapters in books and articles in scientific journals) focus on international criminal law, criminal law, criminal procedure, and humanitarian law. He is Editor-in-chief of the "African Yearbook on International Humanitarian Law", and serves on the board of directors and executive committee of the Institute for Justice and Reconciliation. He is a member of the South African Academy of Science and Art.

About the first edition: A successful attempt to provide a working definition of the crime of aggression and the conditions for the exercise of jurisdiction by the ICC thereon. At the same time, it purports to trace the historical development of the norm of aggression and analyse the problematic issues concerning its definition. Using accessible style and language, the author correctly grasps the need for a two-sided approach to aggression, from the point of view of states, as well as of individual criminal responsibility, and touches upon the critical issue of the connection between maintenance of international peace and security and international criminal justice. [...]the book provides a thorough and concise analysis of the elements of aggression, one of the most controversial crimes in international criminal law and pinpoints its place in the complex scheme of interplay between collective security and international criminal justice. [...] the value of the present title lies in its contribution to the ongoing debate on the interrelation between state and individual responsibility for international crimes - a debate that seems far from being settled. Irena Giorgou in 2012 JICJ 712