Hmmmm...so you would predict that the local arab nations would jump in on this one. I think you are right.
Now as to the availability of cruise missiles, i dont know if the Brits have any. They got some good nukes, but i dont know if they have this specific capability. I do know that Israel does have a counter battery to this problem, in the form of patriot missile batterys and hawk inplacements, so this form of attack may not work.
Could Israel defend and conquer on a four front war? They have done it before: they can just as well do it again. I believe they could, if they used their air assets carefully. it would all depend on how much of a shake-up the Air Forces could generate amongst the attackers.
The one sticky part of the whole equation is this: which side would the US be on if such a conflict existed? Israel? Britain? or would it stay neutral? or would it take down both partys in the name of maintaining a stable reigon in the area? A british invasion force and the israeli groups could be easily stopped by the humane use of EMP weapontry to totally destroy the communication and electronic systems needed by both groups to command and control their forces. if the other arab states got froggy at that time, im sure a non-humane method waits to deal with that situation too.
then again, there is good ole south africa. Now south africa has had a long standing friendship with Israel: do they have a mutual defense pact too? would they feel froggy enough to jump in and help Israel, as to honor a defense treaty, or would they stay out of it?
so many varibles. Im just glad that something like this will not come to pass in my day and age. Maybee in a hundred years...