get em off the roads
All of that is an excuse. China is preparing to invade Taiwan this year or next, elseways they've spent the past 14 years building up their invasion force only to miss their window. Iran's oil is absolutely key to this effort, and if we have to topple a shitty fundamentalist Muz government to stop a world war from getting out of control, then Shabbat Shalom motherfucker. They could get a nuke, maybe. That's not the issue. China is always the issue.
Iran is in the business of exporting revolution and violence and have spent decades on building and training networks of militia across the middle east not just to fuck with our heebs but also our camel jockeys in Arabia and our boys on bases abroad. The IRGC is responsible for a lot of maimed and wounded US soldiers from the occupation in Iraq. Also, don't forget, they fucked us over big time in the 70s. Not that long ago really. Sometimes there's not a deeper game underneath. For the US to maintain its global preeminence, for Americans to maintain their quality of life and happiness, we must, absolutely must, exert dominance over the major parts of the Risk board that is Earth and West Asia is one of them. That's the goal and the game here with Iran. They can't get the bomb or we'll face a radically harder to manage situation in that baboon enclosure. Iran having a nuke is disastrous to the security structures set up in West Asia, which is built on us being the only ones publicly having nukes and the muzzies having close to 0 nukes (Pakistan having, maybe kinda sorta maybe, nuclear weapons is not relevant to this picture) and the heebs having some small number of nukes, unofficially. Nuclear proliferation is serious. Either responsible countries have it, or everyone has it, or we all end up dying. The hair trigger the world lives under because we fucked up and let the jeets kind of maybe get the bomb is bad enough. Thank god they're too retarded to manage keeping that shit together.
Iran getting nukes means the number 2 and 3 sponsors of terror, like say, Saudi Arabia and Qatar, will need to get nukes or face dominance by hostile parts of the Ummah who hate their guts for retarded succession of Muhammad reasons and also ethnic and cultural differences. They will also decide to start being more aggressive once they have a "you can't touch me" forcefield. Turkey will need nukes. We can barely trust Turkey with pistachios. Every group of Muslims are genocide-happy retards who cannot be allowed to develop a potentially civilization-ending military industrial complex. Letting even one get the bomb is a problem. Pakistan, again, only kinda sorta has a bomb and likely doesn't have the capacity to maintain it if it actually ever had a real nuclear deterrent and not just one for izzat's sake. They're in the end just jeets with a somehow more defective belief structure.
Nuclear deterrence relies on rationality, Muslims cannot be rational. There is no point in history where Muslims have behaved in a way that allows confidence in their ability to adhere to deterrence rationality. They have always poked the bear, laid the roadside bomb, they did not invent suicide terror, that was the Tamils, but they did propagate suicide terror. None of them can get it, it is not acceptable as a security outcome to anyone with a fucking brain.
Regarding Iran's oil: China can produce oil using the Fischer-Tropsch process which converts coal to petroleum. They have a lot of coal and no compunctions about sacrificing men to get it out of the ground. They have no direct pipeline to Iran. They have no uncontested sea routes to get to the Indian Ocean where Iran could tanker oil to them. If a war breaks out the navy could easily cripple Iranian tanker flows and blow up the pipelines connecting Xinjiang to Turkmenistan and it would certainly face a suddenly renewed insurgency in Xinjiang from the ethnic Turkmen. Their methods of getting oil from West and Central Asia are vulnerable if they try to attack Taiwan and they'd face a multivector attack against any ability to continue the war. Ukraine grows kasha and wheat and prostitutes, at least before the war that was about what they had, and for their sake and to spite Russia the US was able to financially and militarily hamstring Russia into a protracted stalemate just with financial tools and intelligence sharing. The US could certainly inflict extraordinary pain on China and push them into total reliance on their crummy domestic energy reserves. China could likely inflict extraordinary pain on the US as well, but in terms of access to energy, China is on the backfoot by default and does not truly have a stable and robust way out of this problem outside of self-reliance based on an inefficient coal-to-petroleum conversion.