The hand-over to the national afghan security is risky, without a doubt. But I wonder more about why Petraeus stepped down and let Allen take over. Though Allen seems to take the position that he will continue Petraeus' course, another general means another way of action. Can Allen handle the deficit of forces caused by the recent troop withdrawal? The new appointment of general Allen might cause more distress in this increasingly choatic time of the hand-over and troop withdrawal.