The Democrats manage to come off looking inept on the subject of Iraq because they come up with stupid alternatives. Move the troops to Kuwait. Withdraw from Iraq but not really. Finish the job but they really are opposed to the job. That may save the GOP on the Iraq matter if nothing else does.
Moving our troops to Kuwait with a hostile government in Iraq and Iran puts our troops in danger of a chemical or biological attack from a close enemy. Far better to withdraw completely, beyond a "no-warning" line, than to expose our troops to danger. Even better, or course, elimiatre the hostile government.