ReasonI, n case you don't understand 'defensive', it means they were attacked and they defended themselves against Arab attack. Indeed Israel has nukes which are for defense purposes. It has never announced it has nukes although it is clear that they do have a considerable arsenal to defend themselves. Indeed, even if Iran had nuclear weapons and attacked Israel with them, Israel has such weapons on submarines. Hence, it is highly unlikely that Iran would ever attack Israel directly since it would mean the end of Iran and possibly most of its population of 75 million. More dangerous is the possibility that Iran would sneak a nuclear bomb into Israel. A missile launched version would be shot down by either the US or Israel. Look for the US to announce a new anti ballistic missile system for the Middle East with the specific goal of shooting down Iran missiles. Hence current events are highly unlikely to be a real problem for Israel or other US friends in the region; just something for Netanyahu to look foolish about.
Police disperse hundreds in brawl in Kafr Manda, northern Israel (Haaretz)