And the fundamental question is: Why does anything about Afghanistan really matter to the U.S.? How many years will it take for us to get over the fact that Osama bin Laden ran a training camp for jihadists there? Right now you can be sure that somewhere between Casablanca and East Timor there are training camps for religious maniacs and thousands more casual meet-ups among aggrieved young men with testosterone boiling in their brains and nothing else to occupy their time but playing with guns. Are we going to invade every land where this goes on?