so was sgt bradley. 14 taliban died in battle. >> what kind of lessons do you think were learned?we have been lulled into a false sense of security here. >> this attack was unthinkable, but the tactics used were enormous to the reputation. >> quentin reporting, we can join him now. your report, in a way, raises a question. ok, the taliban was seen, but if they can do this now, what might they achieve after forces have left and nato has withdrawn? >> i think it is a reminder that the international mission here in afghanistan is facing a sophisticated enemy, able to manage this kind of attack against the most secure locations in afghanistan. we believe that the network here responsible for the attack is the same responsible for most of the attacks in kabul. the have launched similar, sophisticated attacks. this was a reminder of just how strong the taliban are, resilience. not just resilience, but the ability to rejuvenate despite the fact that this war has been going on for 11 years. >> for the benefit of our viewers, tells who the hakkani network are and the tactics needed to deal