I can guarantee you that NO single French will agree for an umpteenth invasion without any credible justification (France did the Lybia mostly because Sarkozy had personal problems with Ghaddafi and some arab states wanted some kind of revenge and they all knew it was an easy target, the justification was mostly made by the frenc-zionist "Bernard Henry Levy", which is now a meme in France.
France knew that Iraq was an OP, that's why they never step a foot inside the Bush plan
Actually if you watch news, a million of people got into the streets of Paris protesting for a law that obligate everyone to work until 65yrs old or else they wouldn't touch any money from the state, in 2018 massive protests were ongoing (yellow vests)
The country is under inflation for everything, price rise, the gas price is at 2euros per liter which is absurd and people already protested and got no response, the country have a massive debt, Macron is following Zelensky and his delirium path, they are printing money like never, the Euro which was always worth more than the Dollar, got to the same exchange price and even less months ago
I don't think any middle class French earning 1000euro (and mostly less) per month will agree to the idea of getting in direct war with Iran, which isn't Libya first, and that's going to be very hard for them to have a justification to go into a full scale war (NATO and US knows they can't strike without getting themselves into a full scale war, because there will be a massive retaliation, it's not like Syria bombings), they can say again "Iran got nukes and we should free them", no one, even in the US will never buy that for a 3rd time, they will spend trillions in a war with Iran and this is just unimaginable, specially if Israel is the leader, it would be a joke and a meme to everyone, i mean like they think they can enter Iran airspace, bomb 3000 targets, and get away with it? In a country filled with drones and missiles (and maybe something worst) everywhere?
All i know is that white countries (west) have a casualty threshold in any modern war, since the trauma of WW2, they cannot accept to lose a lot of personnel like Russia or Iran, if the number of people from their side starts to raise, a British frigate sunk here and another sunk there, they will undoubtedly nuclear blackmail Iran and i only see this as the thing they can do, but they would never succeed in a full scale war
I don't know how the case is for British people, but i doubt their whole plan will happen, they already threatened like 20 times since 2020 of an attack, nothing happened
I even think Iran should make its offensive+defensive doctrine into measure by seizing some British cargo and send a message