Maybe that's exactly what is wanted? The Israeli govt is a bit stressed at home so a good fight with a neighbour would thward that attention it is lately getting. On the way a couple of Israeli diplomats might get hurt but hey, you can't cook an omelette without breaking some eggs.
Australian police arrest 5 over shooting 'linked to terrorism' (Reuters)
from the article: Israel fears Hezbollah behind terror threats on its embassies