NO SMOKING GUN (or even a flaming missile) will ever be enough to convince liberals that this war is inevitably necessary. Their supply of feeble excuses is endless.
Unless, of course, one of their own, like Klintoon, is occupying the White House at the time -- then every position they currently hold will flip 180 degrees.
And of course, if Bush waits, and Iraq lobs a chem/bio/nuke weapon into Israel, etc. the libs will immediately break into wails of "he should have known!!".
In other words, you cannot win with those gutless parasites, so to hell with 'em.