It seems Bush will challenge the UN to enforce inspections, which the UN will agree to do. But along that path, Iraq will not cooperate, opening the door for unilateral US involvement.
Hopefully (for them), the Iraqi military will grasp their impending fate in advance, and get rid of Saddam, somehow. Barring that, US airpower turns out the lights in Iraq's air-defenses and bombs away at anything remotely like military infrastructure, bridges, highways, electrical grids, pipelines, oil loading depots, etc.
Eventually another military surrender. And down with Saddam.
"Hopefully (for them), the Iraqi military will grasp their impending fate in advance, and get rid of Saddam, somehow."
THAT is what I suspect could be the most desireable outcome... and not just in Iraq either.