Saddam's mighty legions and his Praetorian Guard will sit around the city playing pinochle by candlelight till the bottled water and camel Spam runs out. Agents provocateurs will be working via radio, pamphlets and rewards to undermine morale among the populace and provoke mass defections of Saddam's home defense troops. Once we've occupied the oil fields, and start pumping oil and pocketing the profits, the cities become irrelevant.
We just provide that any women and children who want to leave may do so, and will be well cared for. Set up camps outside the city cooking large quantities of spicy food, and let the aroma empty the cities
Right on target.
Siege has worked for thousands of years. They'll get hungry eventually.