Yasuaki, Onuma Keywords: International law | Legal history | Legitimacy | International customary law | Sovereignty | Human rights | Mots clefs: ABSTRACT The twenty-first century will witness conflicts which may destabilize the international order. These conflicts are likely to arise between emerging Asian States such as China and India whose material power is growing, and the Western nations who wield significant ideational power. A West-centric international society will change to a multi-polar and multi-civilizatio…