Why it's hard to see Iran starting a full-fledged war against Israel
After Israel's attack, Iran launched approximately 100 drones targeting Israel. But here's the kicker, the Israeli air force got the permission to intercept those drones over the skies of Saudi Arabia, Jordan and Syria.
Moreover, we got the news that Jordan intercepted and shot down several Iranian drones entering its airspace on their way to Israel. There are also news of Lebanon warning Hezbollah against joining Iranian response to Israel, and a Hezbollah official confirmed that the group wouldn't initiate attacks on Israel.

I'm not a geopolitical expert, but these to me are all signs that Iran would be fighting alone, so from a risk/reward perspective they can't do much. We will probably get a retaliation with missiles like we saw last year. They will be intercepted and we are going to forget about it in a couple of weeks.