Maybe we can bring some nuance into the conversation about Iran?
I mean, they are regarded by most nations I'm aware of (including the USA and Israel) as a rational state actor. The Chairman of the Joint Chiefs
explicitly stated as much earlier this year, and you can see the same indicators in how Israel engage with them. An irrational actor must either be removed or neutralised using direct methods. A rational actor can be manipulated using the methods Israel and the US engage in. The fear from Israel is that Iran will gain a position of power, not act irrationally, threatening Israel's regional superiority. The biggest fear for the USA (alongside sharing that of Israel) is that nuclear material and/or weapons produced in Iran may fall into the hands of non-state actors who
won't be rational players.
As for the Guardian Council being mindless jihadis, I don't think that follows at all. Most are long term, experienced politicians even when they are clerics first. Take one example;
Mahmoud Hashemi Shahroudi. He is anti-reformist and prosecuted reformist politicians in 2001. He is also an Iraqi who used to be a senior member of the Supreme Council for the Islamic Revolution in Iraq, a Shi'a Islamist group originally founded to overthrow Saddam. Shahroudi's main efforts within Iran has been the Decriminalization Bill; a massive liberalisation of Iran's criminal justice system, removing jail sentences under six months in favour of rehabilitative work and community service, massive reform of juvenile punishment and the forbidding of the death penalty for those with low mental development. Outside Iran he is better known for setting up the 2002 moratorium on stoning.
This is one of six clerics on the council, alongside the six lawyers. He is one I picked at random because he had a decent length English wiki page and I don't feel like dealing with translations or heavy texts tonight. But it's just an example to show that dismissing these players as irrational jihadists is missing a lot of details and likely grossly inaccurate.
It's not saying that conflict with Iran isn't likely;
rational states often come into conflict. But treating them as a rabid dog that has to be put down for everyone's safety is just wrong and likely hugely counterproductive. And this is still ignoring the wider population, reform movement, the complex nuclear situation, their regional influence and dozens of other factors.