Hezbollah is asking the Arab residents of Haifa to vacate the city.
Historically, Haifa was one of the few cities in Israel the Arabs did not leave during the 1948 War for Independence. Consequently, it has one of the largest Arab populations within the State of Israel and shares much in character with towns such as Nazareth and Bethlehem in this regard.
Question: What is the deterrent against Hezbollah that prevents them from using WMD?