President Donald Trump declared an end to his campaign against Iran’s leaders with an exhortation on Sunday: “Ships of the World, start your engines. Let the oil flow!” With the Iranian regime still in place, he was celebrating a resumption of the way the world was on Feb. 27, the day before the United States and Israel attacked Iran. A return to a version of the status quo was a far cry from the original aims of a war effort that kicked off with a vow to come to the aid of the Iranian protesters who had taken to their...