I really respect Getty Images' John Moore and one of his packages from his last trip to Afghanistan struck me as we are considering Gen. McChrystal's decision to avoid fighting in populated areas.
From John's images and commentary, we can see that on the ground, this attempt at sterilization will be very difficult and throw ambiguity into the fight for coalition troops.
There may just be some areas where the hearts and minds approach just won't work ever.
-- Christian