It is almost impossible to defend against a bomber willing to blow himself up. Unless someone develops a technique for scanning people for explosives at a safe distance, at the very least he can take out the guards who are searching him.

I fear that most of our casualties in Afghanistan over the next few years are going to be victims of such bombs. They know that Americans civilians back home are even more likely than Israelis to become discouraged at this sort of thing.

I am also concerned about individual suicide bombers becoming a standard tactic on our home soil while our security forces are off looking for weapons of mass destruction. While someone building a big truck bomb leaves a lot of tracks, how the heck do you track the small amount of explosive for one guy to blow up a restaurant?