With Iranian proxy Hezbollah -armed to the teeth with over 30,000 rockets- instigating a Lebanese government collapse, Israel is well-advised to prepare for the worst. It is altogether likely that Tehran and Damascus are once again probing for weakness... which they're sure to find coming in torrents from today's clueless White House.
---------------------------------
It's a similar situation to North Korea in that Hezbollah could do a lot of damage in northern Israel, but despite ceaseless bluster is guaranteed to lose any full scale conflict with the IDF... and they know it. Unlike the tepid approach of Israel's liberal Labor Party leaders in 2006, if attacked the Israelis would likely go all-out and fight to win this time with infantry and armor from day one... while fully prepared for Hamas and Syria's reactions.