Saarc
Let me state here very frankly that the majority of Pakistanis do not like this Saarc stuff. If Bangladesh wants to enhance its relationship, say, with Sri Lanka or Nepal, Bangladesh can do it bilaterally. The United States, the only superpower of the world, does not have a Saarc like group in North America. Haiti (and other nation islands which are very close to the US) are very poor, but no group or organisation has been formed to lift these poor nations to a respectable position.
The other point is that Pakistan does not have a good relationship with India; both countries are spending a huge amount of money on defence. Their armies face each other. So Saarc doesn't appear to have a bright future.