How can he expect to have the support of the American people, much less the leaders of the world's major countries, if he won't tell us WHY he insists on this course of action? We are not idiots. We can handle the truth. This "I know a secret and I won't tell, nyah nyah nyah" stuff is just insulting.
I don't particularly doubt that he has evidence, but I also would not be surprised to learn that there isn't any evidence.
If this country goes to war unilaterally, without solid, publicly announced evidence, world opinion will turn against us in a major and unpleasant way. Even if Mr. Bush is willing to suffer that downturn, the rest of the American people are not.