> The previous campaign lasted a whole 13 days and WW3 didn't start. I'm not sure why anybody thinks it'll be different now or why Russia or China would bother going to war for Iran. That makes zero sense.

We did not move 1/3 of operational USAF capacity and 33% of our deployable Navy for limited strikes.

The big difference with previous campaign is that now, the Iranian regime is facing existential threat. While the previous war was more a of a show for respective domestic publics, this one feels like there is no coming back.

Of course Russia or China won't go to war for Iran - nobody is saying that. They can get involved though, just as Europe is involved in Ukraine war.