The most important change in public international law over the past century has been a re-direction of its focus exclusively on states to a broadened scope of subjects including, most importantly, individual human beings. This shift in the status of individuals may be directly traced to the widely acknowledged need, in the aftermath of the Second World War, for a more adequate response to the Holocaust and other large-scale atrocities than that offered by traditional international law. Substantive concerns led to the development of human rights law. Victims' demands for compensation or restitution for the material injuries caused by genocidal Nazi persecution spurred a parallel procedural revolution. The innovation lay in national and international recognition of individuals' rights to assert such claims on their own behalf against their own governments, foreign states and foreign private entities.