

Because in all the previous strikes the US and Israel did, Iran did back down and only struck back with performative actions (like bombardments with previous warnings) in return (while less overtly funding and supporting proxies in other countries primarily moving against Israel and KSA).
The US felt emboldened that this time Iran would cave as well and give into their demand immediately, because the idiots running the current government can’t understand cultural differences or any strategy apart from schoolyard bullying. To Iran this just shows that they should never have shown restraint in their responses but have to continue playing the escalation game. They know, that with this administration their only chance now is to keep escalating until Trump gives up.
And at the same time Israel has decided, that it now wants to eradicate Iran as a country and use the protest movement and the Kurds as a tool to bring Iran into a complete and permanent state of civil war.






I doubt, that Israel is stopping before they have tried their uttermost to bring Iran into a civil war like state. Their goal is complete destabilisation or at least regime change. The US’s aim is up to everyone’s guess. Probably just “YOLO” judging by their shifting aims every day.