In reply to:

What if we never invaded Iraq and ten years from now a nuke goes off in a US city and we discover Saddam financed the operation...or maybe lent out his nuclear scientists to terrorists....or maybe allowed the safe passage of plutonium through his country etc etc.

Are you serious? Hypotheticals are never a good enough reason to go to war.

"I thought he was going to punch me next year, so I hit him today." Yeah. Uh huh.