Economic and armed non-state actors increasingly operate through their transnational activities. International public law excludes them from any international regulation or accountability process. International humanitarian law (IHL, the law of war) as a branch of international public law is an exception to this because it also regulates the behavior of non-state actors. Recent developments pertaining to the potential liability of business entities for involvement in international crimes, particularly when related to the activities of ANSGs challenge the traditional doctrine of international law and demonstrate the need for its norms to adapt to an evolving reality.