This is weird, isn't it? Iranians were rioting on the streets for that poor girl killed by IRGC but now that they have golden opportunity to kick the mullah regime out, they're sitting it out?
Citizens tend to rally around the flag when faced with an external enemy irrespective the state government's popularity.
Plenty of such precedents in history from Stalin's CCP facing the Nazis down especially in Stalingrad - the turning point in WW-2 , the Chinese rallying around Chiang Kai Shek ( though admittedly the Guomindang & Chiang weren't as hated or feared as the others in this list ) & the Guomindang when faced with an invasion from Japan & Iran itself in 1980 where the 1979 revolution hadn't thrown up a clear winner & Saddam Hussain came calling invading Iran at the behest of the West & the Gulf Sheikhdoms.
Ordinary people took up arms to defend Iran while the Mullahs consolidated their rule slaughtering their opponents at home & leading the war effort uniting the people under their rule , using the war & patriotism as underlying reasons.
Very disorganised. US could establish a training camp across the border right now and start training and sending local back and forth. If you guys are familiar with PUK or KDPI or Komala, they do the same thing but they don't have official state backing.
Iran's border with Iraq, while rather hard for conventional troops, are very porous. Drug smugglers, guerrillas, human traffickers have free reign there.
A revolution - any revolution requires certain pre requisites to succeed - a rebel group/s actively pursuing displacement of the current regime . absolute annihilation of the current regime like that of the Nazis in WW-2 or a deep schism within the ruling party for whatever reason like a financial collapse , clash of interests over the spoils of office , clash of ideologies even , a war going badly forcing recalibration which the ruling faction isn't willing to consider & so on.
Iran doesn't fulfill any of these criteria till date . The ruling party has held fort & even if there are differences within ,they haven't let it get out in the wider world for whom they are an extremely cohesive unit.
This war too is unlikely to trigger off any of the aforementioned responses for a revolution. However what it can do is trigger doubts in the minds of those who feel the ruling party is pursuing the wrong path by getting into unnecessary confrontations while the country itself is sinking on all parameters.
Do remember this is the first time Iran is at war after the end of the Iran Iraq war in 1988. That's almost 4 decades ago. A completely new generation or 2 have come into existence since.
While they've known deprivation & have made their peace with it , they haven't known both war & deprivation which makes the latter worse.