'Idhuvum Kadandhu Pogum "
Even this challenging situation would ease
Theoretically the idea is all right but there will be problem of governance and questions like - who will be the sole President?
There are many countries where many different groups are surviving under the same umbrella so why so many different races and communities can not survive under one United World Govt.
It may look as a difficult proposition but not an impossible one.
Knowledge is power.