Pakistan was born as the creation of elite Urdu-speaking Muslims who sought to govern a state that would maintain their dominance. After rallying non-Urdu speaking leaders around him, Jinnah imposed a unitary definition of the new nation state that obliterated linguistic diversity. This centralisation - 'justified' by the Indian threat - fostered centrifugal forces that resulted in Bengali secessionism in 1971 and Baloch, as well as Mohajir, separatisms...