I don't recall Israel threatening Arabs in the context of committing genocide or wiping, say, Iraq and Saudi Arabia off the map. Instead it's about getting Iran specifically to stop funding Hezbollah, Hamas, Houthis, and other groups never mind ISIS/ISIL &c.
Israel isn't innocent either. Their actions in Gaza went beyond what was necessary, in my opinion, but I will never accept or entertain a discussion where all the blame just goes to Israel or just goes to the United States.
Neither Israel or the United States are doing what Iran is doing. Iran actively chooses to be belligerent because their authoritarian leaders, who also like to help Russia invade and bomb Ukraine mind you, need an enemy to try and maintain appearances.
I don't know but I don't doubt that Israel has a nuclear bomb. I also don't have a problem with it, because unlike Iran they don't go around threatening their neighbors with nuclear holocaust and destruction, like Iran does.