1. So the US is responsible for reclaiming a global market by itself? Or is the US required to be terrorized for 4 decades as a sacrifice for the global market?
2. And Europe doesn't need any?
3. But not European supply chains?
4. That's probably true. So the US is required to serve the EU with its military because the EU is their customer? I can think of several ways that the US can keep this position without the strait. But it's much more expensive for Europeans.
1. "Reclaiming" what? The president of the US, without Congressional approval, decided to launch a war against Iran. He broke it and now, like a petulant child, he wants everyone else to help him fix it. There was no credible evidence that Iran posed an imminent threat to the US. Virtually all of Iran's actions against the US in the past 40 years involved targets in the Mideast and once again, the history explains why Iran and the US aren't friends. In addition to the fact that the US was instrumental in the 1953 coup and supporting the Shah's brutal dictatorship that terrorized millions of Iranians, let's not forget that the US provided significant aid to Iraq in the Iran-Iraq War and it's pretty much accepted as fact in the Arab world that the Iran-Iraq War was a US design. Bottom line: the US needs to accept responsibility for creating the very environment that it says threatens it.
2. Europe didn't launch a war against Iran. They are obviously going to suffer (like everyone else in the world) but that doesn't mean they have an obligation to allow the president of the US to effectively commandeer their resources to clean up the mess he made.
3. Of course it affects European supply chains. It's going to affect everyone on the planet basically. But again, Europe didn't launch this war. Why do you seem to think they have a moral obligation to get involved in what virtually everyone in the world sees for what it is (a foolish war started by the US and Israel)?
4. The US isn't required to do anything. Your perspective seems to be that the US is God's gift to the world and everyone else is just freeloading. Another perspective is that alliances like NATO, the petrodollar system, etc. have been the sources of America's outsize economic, political and military power post-WW2. In my opinion, Americans have no idea what is coming as Pax Americana dies. It's not going to be pretty and I believe it is an existential threat to the way of life Americans have come to expect.