Trump's war with Iran is not popular - and that's no surprise. Critics of the war are correct about one very important thing: It is messy.The Strait of Hormuz remains dangerous. Oil markets are volatile. The risk of escalation has not disappeared. Even after weeks of air strikes - and now a U.S.-led blockade aimed at restoring control of the Strait - Iran retains the ability to disrupt shipping and rattle the global economy.All of that is true. But what critics have yet to show is that there was a better alternative.For years, American policy toward Iran rested on a simple hope - that...