In my view, the attacks of Sept. 11, 2001, were an act of war, not a mere crime. Our terrorist enemies don't represent a sovereign nation, wear a uniform, follow the rules of armed conflict or show any regard for humanity. The key difference between them and us is that we care about these things. Even during a time of war, we have chosen to be a nation of laws, with a different, higher set of values than the terrorists. We should always remember that we are Americans, possessing values superior to those of our enemy, and that there is...