Yup.
I cannot believe that the Saudis, their neighbors, and other fellow travelers are unaware of the fact that it would take little more than a few SEAL teams to knock out the seaside desalinization plants that provide what little water exists in that part of the world.
It would be sadly amusing to see the US trading (barrel-for-barrel) premium-priced water delivered to Saudi Arabia by tanker ships -- to the exclusion of all other "vendors" -- for newly-discounted Arab oil.
It also would not be beyond our military and strategic capability to cut them off with respect to other commodities necessary for the sustenance of their flea-bitten lives....