The Hezbollah have proven they understand how to implement 4GW strategy effectively. These are guesses, but they are attempting to garner more political power in Lebanon, so they are probably holding their military arm in reserve, and keeping a clean overt appearance, yet covertly they are keeping the pressure on Israel by channeling money to various individuals and groups to conduct harassment attacks against Israel. To what purpose? This creates a wide array of targets for Israel, which means there are few if any identifiable targets that can be "effectively" neutralized. They may be able to find and kill the shooter, but there are hundreds of shooters waiting to step up to the plate. The Israeli government obviously feels compelled to take action, so this could be an attempt to lure Israel into conducting an attack, which will be seen by many as unprovoked, so again Hezbollah wins on the IO stage. Speculation, but don't underestimate them.