I'm sure there WILL be more terrorist attacks. I just don't think there will be any major ones. It's out of current terrorist capabilities to blow up a nuclear bomb, release a modern plague on us, take out the government or anything along those lines.
I'm sure they can walk into a Sbarro pizza and blow themselves up though.
Are you aware of the concerns of the Dept. of Defense with regard to 12 backpack nukes that are reportedly missing in Russia? These nukes were part of the old Soviet arsenal, and they have just disappeared. No one knows where these weapons are at present, or who might have them.
I will say this much I hope that I'm proven wrong, and you're proven right. In this instance I will gladly be wrong!