Israel is under the US nuclear umbrella. When was the last time somebody used nukes on somebody under the US nuclear umbrella? Starting a war is not in Israel's interest. Having the US destroy itself economically and militarily by having the US launch another Middle Eastern war is not in the interest of Israel either. If you need a war that bad, buy a boat and invade on your own. But don't expect everybody to follow. It ain't gonna happen. Nobody rational is that suicidal.
Seven Libyan soldiers killed in clashes with ISIS (Reuters)
from the article: International push for Iran sanctions is too little, too late