International Criminal Law (ICL) is a body of international rules designed both to proscribe certain categories of conduct (war crimes, crimes against humanity, genocide, torture, aggression and terrorism) and to make those persons who engage in such conduct criminally liable. ICL provides both enforcement and regulation at a State and international level. At a State level, ICL authorises or imposes an obligation upon States to prosecute and punish such criminal conduct. At an international level, ICL regulates international proceedings before international courts and tribunals that prosecute persons accused of such crimes