Last week, the president of the United States stood at the podium of the United Nations General Assembly and asked aloud whether he should “annihilate the Islamic Republic and do it quickly”. Donald Trump then turned to Venezuela’s oil and declared: “To the victor belong the spoils, you’ve all heard that …” He spoke as the Iran war neared its eighth month, a week after the UN Human Rights Council found “reasonable grounds to believe” that the US had committed war crimes.