I agree with Saif on the issue of the baluchis, sindhis and Pakhtoons, as all of them either did not want to join Pakistan or resented it (sindhis) after joining. Actually, the pakhtoon (Pathans), under Gaffar Khan, wanted to join India!! In their long history, this is the only time the Pathans voluntarily gave up their weapons and became non-violent. I think historically the Baluchis were more favorably disposed towards India than pakistan (at the time of partition). The last amir of baluchistan wanted to rise up one last time, but before he could do anything substantial was killed recently. Pakistan has been alienating these groups for a long time now, just as they did the bengalis, and only time will tell how this will be played out.