...... Does this refer to the tribal areas? The govt of pak apparently has very little control over that area anyway - it sounds like things are kind of outta control there. ....
Right on!
The question at the top of this thread has a Part I and Part II.
Part I - Who can divide Pakistan?
Part II - Who will benefit from the division?
Here are quick comments on the two parts.
Part I - Anyone who challenges the writ of Pakistani government is in fact trying to divide the country. The list of dividers includes FATA militants as you pointed out, Alqaida, the Islamists who do not accept the boundaries of Pakistan to be sacred, the Urdu speaking elitists of Karachi who feel they and only they have the right to control Pakistan's vital port, and last but not least Punjabi militants who are hell bent on using Islam in order to kill the Pakistan.
Part II. The biggest beneficiary of divided Pakistan will be Al-Qaida and the Middle Eastern Arabs who do not want Pakistan to compete with their hold on Tribal Areas and Southern Afghanistan.
The second biggest beneficiary will be Russia that it will be able to control Turkmenistan oil in its iron grip.
India will surely be a loser. If Pakistan goes, so goes the dam that has stopped tribal laskhars from invading India. Surely India can defeat initial invasions, but the history clearly shows that Indian society is too fractured and poverty stricken to face a 100+ years onslaught from the North West.
Americans and Brits will lose too. All their efforts will go to waste as they will fail to stabilize the region and turn it into S. Korea like fort against anarchy.
Everyone in Pakistan will be a loser, because Pakistan will surely resemble the Islamic Emirates of Afghanistan or those tribal cesspools of anarchy in the Middle East and in Africa. All the big mansions of Islamabad, Pindi, Lahore, and Karachi will be gone just like their bombed out cousins in Kabul. All the bridges will be destroyed, and so will be the motorway. Most of the roads will have more potholes than those in Somalia, and there will be warlords at every 10 miles asking for Bhatta just like Talibans and MQM does at this point.