Israel has made no secret of the fact that, in a future war with Syria, they estimate that there would be as many as 3,300 Israeli casualties (including up to 200 dead). That's if Syria just used its long range missiles armed with conventional warheads (high explosives or cluster bombs). If the Syrians used chemical warheads, Israeli casualties could be as high as 16,000. Over 200,000 Israelis would be left homeless, and it's believed about a 100,000 would seek to leave the country.