america to run a gount launtlet the center of kabul up to the main airport where they hope to get flights to the united states, maybe elsewhere, and start a new life in safety. but for that they must go through an extraordinary challenge. what should be the easiest drive in kabul is the reason the city is on edge. head up the main airport road since monday when i drove it and you run into the taliban. then they were beating people back, perhaps to clear the civilian runway crowded with desperate people then. by wednesday, it had gotten worse when they were clearly stopping people from using their escape to america and accosting cnn. taliban controlled that road, the entrance at the end of it and the road to the left, now many are trying to get in from the authority road. but that has led to devastating scenes at the north gate. when i was there, the crush was dangerous, but the number ofs have grown further still. at night stun grenades have been thrown when huge crowds still