It says here in the Washington Post that the Powell Doctrine of overwhelming force is gone for good. Now is the era of the Long War: relatively low-scale violence against civilians in occupied lands from now until a dollar's a penny (which, come to think of it, might not be too long from now). As somebody wrote in a book I read one time (I suppose it could have been Andrew Bacevich, The Limits of Power), the Pentagon boys took their humiliation in Vietnam pretty hard and so decided to gear the...