The USA and, to a lesser degree, the UK, France and Germany are fine examples of the third way. A majority of minorities united by common rules, beliefs and aspirations. Those are tension filled structures sustained by greed or vision or fear or hope and sometimes by the very tensions that they generate. No longer utopian, it is a realistic model to emulate. It is only when ethnic cleansing is combined with self determination that a fracturing of the solutions occurs.
Atrocities are the vile daughters of ideals.
Self determination is employed to facilitate ethnic cleansing rather than to prevent it. Actually, it is the very act of ethnic cleansing which validates the common identity, which forms the myth and the ethos that is national history, which perpetrates itself by conferring resilience upon the newly determined and by offering a common cause and the means to feel efficient, functional and victorious in carrying it out. There are many variants of this malignant, brutal, condemnable, criminal and inefficient form of ethnic cleansing. Bred by manic and hysterical nationalists, fed by demagogues, nourished by the hitherto deprived and humiliated - this cancerous mix of definition by negation wears many guises. It is often clad in legal attire.