Pakistan, India, Bangladesh and to some extent even Sri Lanka are young nations or as I like to call them: bastard nations (this is not to offend anyone more like an analogy). The main problem arises because of the fact that these nations did not evolve, same as with the the rest of the post-colonial nations. They were demarcated by a bunch of bureaucrats from their illegitimate parents (Imperialists).
Thus, these nations have not resolved their existentialist crises which often spill over to one another. The traditional (philosophically), the modern and as G. Spivak states the sub-altern are in conflict and these fissures are the base of the regional and local conflicts we have and would continue to do so unless we evolve.
In many aspects our development mirrors Europe's after the evolution of nationalism where people gained an identity based on their nation-states. However, we have the West brooding over us to ensure we remain divided and actually aggravates our fissures to keep us on a ledge to ensure their hegemonic hold.
Just imagine China and India have resolved their problems, are working on an economic treaty. India and Pakistan have resolved their conflicts are also being included in the defence and economic cooperation with India and China with Bangladesh and Sri Lanka looking to come in. That puts near about 2/7 of humanity with their economic power against the West, to challenge and lead the world.
I keep saying it again and agian: Asians need to wake up.