What a difference eighteen months makes. As I write this, a two-week ceasefire between the United States and Iran is hours old. Whether it holds is anyone’s guess. The war that the U.S. and Israel launched on February 28 has already killed American service members, destroyed universities and elementary schools, closed the Strait of Hormuz, and sent shockwaves through every market on the planet. The president who promised to end wars threatened, in his own words, that “a whole civilization will die tonight.” Iran’s ambassador at the United Nations called it incitement to genocide. Experts are debating whether the targeting …