- Douglas GuilfoyleDouglas GuilfoyleAssociate Professor of Law, Monash University
This chapter addresses one of the more contentious issues in international criminal law: the extent to which a defendant should be able to plead that there are circumstances excusing or justifying what will invariably be appalling crimes. It first notes that while the distinction between justifications and excuses is known in a number of national legal systems, it is of no direct relevance to international criminal law. It then discusses the following defences before international criminal tribunals: mental incapacity, intoxication, self-defence, duress and necessity, mistake of fact and law, and superior orders. It also considers two defences which arise under the law of war crimes: reprisals and ‘tu quoque’, and military necessity.