The Casuistry of International Criminal Law: Exploring a New Field of Research

Abstract

International criminal courts have made an important contribution to the development of international criminal law. Through case law, the courts have fine-tuned and modernized outdated concepts of international crimes and liability theories. In studying this practice, scholars have so far focused on the judicial interpretation of statutory and customary rules, thereby paying little attention to the rules' application in individual cases. In this article, I reveal the limitations of this approach and illustrate how insights from casuistry can advance international criminal law discourse. In particular, I use the example of genocide to show that casuistic case law analyses can help scholars clarify the meaning of the law and appraise the application of substantive legal concepts in individual cases. Based on these observations, I argue that scholars should complement their current research with studies into the casuistry international criminal law.

Keywords: casuistry, legal reasoning, international criminal law, genocide