> Working towards war with Iran has been bipartisan US policy for decades now
Obama signed the Iran nuclear deal in July 2015 [1].
Biden didn't put any policy focus on Iran, in part becase, with the benefit of hindsight, it's difficult to distill any policy focus from that Presidency following Covid. But he also didn't ratchet up pressure in any material way [2]. (And to be clear, I'm not saying that's good.)
[1] https://en.wikipedia.org/wiki/Joint_Comprehensive_Plan_of_Ac...
[2] https://en.wikipedia.org/wiki/Iran%E2%80%93United_States_rel...
Obama is the one outlier here. As far as I'm aware, all other presidents since '79 saw this as inevitable if not desirable.