Honestly, I have always wondered about this strange relation Iran has with US. I tend to sometimes think that, previously both US and Iran were trying to fool satanyahu not to start what he started.
Anyhow, I have called this US israeli aggression illegal, multiple times now.
Motive? Territory?
Nope, out of fear and to stop the export of revolution to territories under his control.
I believe Qasim Solemani did threaten war on Pakistan. Well Iran certainly played its full role (using Pakistani canon fodder to keep the region in turmoil and infighting). Did it try to bring warring factions to negotiation table? No it actively sent its personnel to participate in the conflict(s).
Invasion is not necessarily boots on ground.
In my initial post, I was kind of trying to say that, if iran has already nullified Late Ali Khamenei's decree, so what is stopping them now? If they can enrich one, sure, but that will surely kick start a race in the region. Again they will have to face consequences of their choices and their decisions.