The role of the US in “regime change” in Pakistan is central. According to Prof. Michel Chossudovsky, of The Centre for Research on Globalization, “Washington’s foreign policy course is to actively promote the political fragmentation and balkanization of Pakistan as a nation.”
Everything else is spin.
Interesting perspective on Pakistan:
http://acropolisreview.com/2007/12/death-of-benazir-bhutto.html