In this week’s issue, Immerwahr traces how American Presidents since the late seventies have handled Iran, starting with Jimmy Carter, who believed that the 1979 hostage crisis cost him a second-term, through Barack Obama, whose Iran nuclear deal Trump tore up in 2018. (Joe Biden promised to reverse this decision, but nothing came of it.) Trump, Immerwahr reminds us, was once a critic of George W. Bush’s 2003 invasion of Iraq, and campaigned against further “forever wars.”