A rare exception is President Barack Obama, whose 2015 nuclear deal with Iran was a 20-month diplomatic effort. 28 airs trike that killed Iran’s supreme leader of nearly 40 years, Ali Khamenei, Trump called on Iran’s people to rise up and “take over” their government. More senior Iranian officials would also be killed in air strikes. Carter’s diary entries show him obsessing, much like Trump, on details of Iran’s political machinations — including feuds among top Iranian officials. In 2018, Trump withdrew from the nuclear deal and imposed even harsher economic sanctions than had been in place before the agreement.