The law of neutrality - the corpus of legal rules regulating the relationship between belligerents and States taking no part in hostilities - assumed its modern form in a world in which the waging of war was unconstrained. The neutral State enjoyed territorial inviolability to the extent that it adhered to the obligations attaching to its neutral status and thus the law of neutrality provided spatial parameters for the conduct of hostilities. Yet the basis on which the law of neutrality developed - the extra-legal character of war - no longer exists. Does the law of neutrality continue to...