an oil tanker burning out of control symbolizing open season on truck convoys from pakistan that supply nato forces in afghanistan. it's the fourth attack in as many days. the taliban claims responsibility for at least two ambushes and says it's created a special squad to target nato supply operations in pakistan. i went over the attack locations with cnn national security analyst peter bergen. one up here in -- not too unusual, but this one, why is that unusual? >> well, you know, the taliban, you know, the taliban stronghold is essentially in this area. so this is a very long way from where they normally operate. the fact that they're operating so far south in pakistan, it's like -- i mean, they're trying to send a message. they originate down here, a massive city and port. right on the southern coast. and then, you know, i think the