“Defense Minister Ehud Barak estimates 500 Israelis would die should a strike on Iran, which denies seeking to develop nuclear weaponry, turn into a regional exchange of fire.”
I’m assuming that refers only to immediate military deaths, because if war broke out with Iran, Israel would likely face another war with Hezbollah, and attacks from Hamas and other armed Palestinian groups. Violence could spill over into Shiite Iraq. It would be a boon to al-Qaeda like groups. So we’re talking about a lot more than 500 Israeli deaths. Of course, the deaths of non-Israelis would be disastrous as well, and probably far greater in number.