If the Islamic terrorists were rational, they might refrain from doing this, because of the predictable reaction of the American people. The anger that followed 9/11 would be nothing compared to the anger resulting from a nuclear release in one of our cities. But, regretably, they are not rational.
As Bush has said, this is going to be a long and difficult war, and along the way there are going to be inevitable setbacks. What can we do but live with it and deal with the perpetrators as they deserve?
I think you're probably right. The president looks so solemn so much of the time. I think he knows a lot that he's very concerned about.