The world is changing and things that were impossible become possible and the other way round. September 11th demonstrated that.

Just as "conventional" war changes unrecognisably every few years, so do other types of war, or whatever we call it. The assumption that the factors that have shaped events in the past necessarily apply in the future is as naive as the thinking of those who envisaged the Great War in terms of cavalry charges.

That's what I mean when I say that thinking in terms of bases of operations in distant countries, and sophisticated weaponry and so forth could be a very serious mistake.