It's doubtful that anybody is going to be defending 800 miles of Saudi Arabian border. What the Saudi's say for general consumption and what the Saudi's tell our war planners are entirely different things.
I guess I'm not making myself clear. Any refugees will want to go anywhere else but the western desert between Iraq/Saudi Arabia. Remember how suprised they were when our tanks and mechanized divisions came streaming out of there during the Gulf War. There's nothing out there and refugees would quickly die, they know that.