Whether that will actually bring down the regime is another question. Often a foreign enemy will unite a divided country.
There're thinking in western media or online forums, which seems believe what Iranian Diaspora behaviour and demand going to be reflected to Iran domestic crowd. Something that more delutional then ever. Those Diaspora most having growing up even born in Western environment. They are reflectimg more Western sentiment then real Iranian domestic ones. Even Trump does not want to endorse young Pahlevi, as even he don't buy the young Shah pretender has strong support with domestic Iranian.
The Iranian regime’s recent crackdown on protests in Tehran and the country’s central region featured the use of military weapons, such as automatic or semi-automatic machine guns, that were previously…
www.france24.com
The worst uprising turn out as usuall more in Iran Kurdish teritories. Yes now more ground movement from Persian Iranian in central region happening. However it is also being put down with heavy hand. Some argue heavy hand only increase resistance. Well it could be, but so far it is calm down relatively. Different with heavy handed approach from Shah regime that creating his downfall.
Iranian that I know (real Iranian and not Western born Parsi) are proud and nationalistic people. As the article shown they are increasingly critical to Mulah regime, but also not going to accept Shah's crown prince. They have seen their country getting regime change in 50's and only make their Shah become corrupt and totaliterian regime. They have seen in 70's the uprising against Shah only bring another totaliterian Mullah regime.
Any changes in Iran will now depend on their own pace. They will not again accept western 'help' on regime change, that only bring another totaliterian regime or chaos like Syria. So yes, I do also believe US lead attack will strengthen current regime, as the Iranian will see common enemy.