Point being, that keeps getting reinforced, is any actions being taken by Israel, are in defense of their existence. Especially when you have military forces massing on your border, from all sides.
They have no intention of "invading" anyone (unless of course some neighboring nation made the egregious mistake of trying to attack them, and Israel, after repelling the attack, would be obligated to extend its boundaries into that country, once again, be it Syria or Lebanon....or Egypt if they tried something squirly)
They have not declared Death to any other nation, as such they have no intention of firing any of their nukes, in some form of 1st trike. There inventory is strictly a deterrent, as in there's no reason for Iran to "feel" they need them, simply because Israel has them