BTW, Bunnahabhain, I could see the possibility of a localized chemical attack, but not nuclear, even for cities other than Jerusalem. The fallout from the use of nuclear weapons would cause devastating consequences for both Jordan as well as Egypt. Both of those countries have diplomatic relations with Israel. They don't have a burning need or desire to see Israel destroyed, and I don't see them taking a nuclear attack on that country, with the resulting nuclear fallout on their own people, very kindly.