After about the 200th e-mail from a stranger demanding that I cease my personal coverup of something called the Downing Street Memo, I decided to read it. It's all over the blogosphere and Air America, the left-wing talk radio network: This is the smoking gun of the Iraq war. It is proof positive that President Bush was determined to invade Iraq the year before he did so. The whole "weapons of mass destruction" concern was phony from the start, and the drama about inspections was just kabuki: going through the motions. Although it is flattering to be thought personally responsible...