Iran does not want an endless war. But from Tehran’s perspective, if the choice is between a temporary ceasefire after which the war is likely to resume, and continued fighting under current conditions, it is more likely to keep fighting, not to “open the straits” on someone else’s terms.
Any proposal put before Iran would have to include not only a halt to the current operation, but also a credible commitment that it will not be resumed - in effect, an end to the campaign. It would also have to narrow future talks to two issues only: Hormuz and the nuclear file, explicitly excluding missiles and support for regional allies. And those talks would have to take place on the assumption that Iran retains both its leverage over Hormuz and its nuclear capabilities.
From the Iranian point of view, this is the only realistic path to stopping the war.
Further escalation, including strikes on Iranian infrastructure, is unlikely to change these core calculations. If Washington is unwilling to move toward these terms, then it will eventually have to expand the war without illusions about the cost—particularly the enormous consequences for the global economy.