The Israelis are masters of system design, and have layers of defense, and may, even though Obama cut the funding from our end, have the laser missile defense system initially developed by Hughes, operational - there were two, a theater and long range airborne versions that I heard of (from strictly public sources). The U.S. will have defense too, if we can both get rid of the Marxist street hustler and repair the damage he is doing to our defense management and technology. But while our left prefers that we remain sitting ducks, the Saudi’s best chance for survival is to ally with the Israelis. The Wahhabi in Ryadh are their problem but both Israel and Sunnis have a common problem with the pesky 12th Imam down the well, who will only come out when there is a big enough ruckus.
Only our left don't know the difference between defensive systems and offensive systems. It is offensive when the other guy promises to vaporize your ass. Israel would not be threatened by defensive systems, particularly if they designed them. It may be naive to think that Jimmah’s promotion of the crazy Shia in Iran (perhaps because the peanut farmer didn't like all those beautiful Persian women going to college and becoming less obedient to their rightful owners) could lead to a rapprochement between the Saudis and Israels. But we know Obama’s pal bin Talal, the guy who helped fund his education, and attended college in Menlo Park Ca and New Hampshire, would not like to see his gorgeous and scantily clad palace staff assigned to jihad duty. Reformation is possible if the alternative is annihilation.
I like your idea but I do not think that it would be a popular thing among the Saudi population and government. Their anti-semetic views still run high. Plus, you will be handing Osama Bin Laden another propaganda tool to use.