With the violent ethnic conflicts in the Balkans after the end of the Cold War, secessionist movements in Western Europe, and the refugee crisis in 2015, the integration of old and new minorities and stateless nations became a top priority for European contries. However, it is more and more evident that old legal and political concepts no longer adequately deal with these challenges. As long as ‘others’ are seen to ‘be’ the problem for national security, governabiltiy, or social cohesion through the lens of the monist-identitarian nation-state paradigm, nothing will change in the trias of identity-security-democracy for the theory and practice of conflict regulation through public law. This paper tries to deconstruct the natural and ideological fallacies of the nation-state paradigm and to demonstrate a theoretically and institutionally alternative pluralist model of multiple diversity governance of how to reconcile political unity with legal equality and cultural diversity.