It's a nice analysis, Sukhoiman. Very smoothly written, I must say, I even suspected for a moment that it was copy pasted from some solid defense analyst's article
Just some observations.
I wouldn't blame Pakistan for "nurturing Al-Qaeda". They are nobody's proxy. I've studied their ideological genesis in depth and it appears that they are a product exclusively of the Arab MidEast. Nor are the Taleban a Pakistani creation; to my knowledge, their clergy has overwhelmingly been educated in the Darul Uloom Deoband in Uttar Pradesh, India, and its multiple foreign branches. They may have been exploited by Pakistan to some extent though.
What worries me the most about Pakistan is its internal political instability. India may not be the most reliable of allies and they have long-standing sympathies for the Arab states- but at least it can be assumed with a high degree of certainty that their state isn't going to collapse into anarchy and emerge as another nuclear version of the Islamist Iran. With Pakistan, unfortunately, it is still a very real possibility.
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