The big question, and the my reason to be warry about a nuke, is that if they had a nuke why not use it first. I mean, wouldn't it have been easier to get it incountry and potentially be more destructive before 9/11. Security is a lot tighter now and assets are spread out. Did you notice that Bush and Cheney are not in the same place anymore. For example, if the terrorists knew when the higher ups in govt were going to be in the same area (state of the union address)a detonation would have caused a massive upheaval in our governmental and civilian structure. As of, whenever, a plan has been implemented to continue on if a large number of the govt leaders were killed or injured. Logically it does not make sense to use a nuke now, but then again terrorists don't usually think logically.