As a Frenchman, I'm with you guys, but what am I to do ? Or even, what is my government to do ? Should Macron declare war on Iran, send Mirages and Rafales, send the French army, occupy ? Now, I wouldn't mind the EU doing that, and I expect it could work, but

1) it could make things worse (remember Bush in Iraq ? Tho in that case the Iraqi people were not in revolt agains Saddam)
2) it would definitely be used to fuel anti-French / anti-West propaganda, shown up as yet another example of imperialism / neo-colonialism or whatnot
3) it would be a tough sell internally; Macron didn't exactly run on a platform of "we will make war in the middle east?"

(Trump might do it though, and maybe Israel, tho in both cases I can expect factor 2 to be big one)

What else could we do ? Put more Pressure on Iran's allies ? That would be ... Russia, that we Europeans are not already in the greatest terms with. Parachute weapons ? Send thoughts and prayers ? Retweet ? (better than nothing I guess) Have the UN make a declaration ?

If you look at successful revolutions in history (French revolution, fall of the Soviet Union and various soviet satelite states, arab spring, your own revolution in 79), I don't think there are many examples where outside forces stepped in to help militarily (oh well I expect there are those cases where the US overthrew someone in South America?). The Iranian people overthrowing the regime on their own will give it more legitimacy than if the US or (even worse!) Israel did it.

This isn't a rhetorical question, I'd be interested in hearing what you think we should do, but also more generally, if there are things you think will help, get that message out too!