Again you are claiming something, you can't possibly know..Maybe CIA has no ground assets in tribal areas or maybe they have numerous Pakistani tribal on payroll..feeding them info.
This is well known, dude. ISI provides ground intelligence, and it authorizes terrorist attacks. It cannot happen otherwise. How do YOU know it happens otherwise? You do realize that without Pakistan's consent this would be very tough to do for US, considering it doesn't have too many assets in the region. You do realize that professional intelligence agencies do not use paid informants as primary source of information as they're not that reliable?
Pakistan drone war takes a toll on militants -- and civilians - CNN.com
Is Secrecy on Drone Attacks Hiding Civilian Casualties??By Ken Silverstein (Harper's Magazine)
Besides exact % is not as important as the question..why would ISI kill numerous Pakistani civilians..so that in the process it can also kill a few men..with who it has enmity?
It's collateral damage, as I said, just like civilians getting killed in Kashmir.
If only AT is present in N.Wazirstan, then where is TTP present..as far as I know..rest of Tribal areas are under the control of Pakistani army..so where is TTP conducting its operations from?
South Waziristan, and in smaller numbers in other agencies.
But more importantly, at the height of its power, when South Waziristan was occupied by TTP, there were very few attacks on TTP by NATO.