I think that this situation will only end with the extermination of one or both sides. Iran, Syria etc have only one desire. That is the utter extermination of Israel and every Israelie down to the most newborn baby. If every Arab nation decided to make common cause and accept the losses that such a war would incurr then Israel would face extinction. Faced with a second Holocaust, Israel would go nuclear and those bombs would be as dirty a possible. Consiquences to the rest of the planet can go hang. Bug Out plans? Only if you have an other planet to go to....
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I don't do dumb & helpless.