A Trump doctrine in foreign policy? He just made it clearer than ever

In one notable speech, on one memorable trip, we saw the clearest ever outline of what one might call the Trump Doctrine in foreign policy. The current U.S. president doesn’t tend to indulge in grand theory talk, but he effectively laid one out in Saudi Arabia. It might be summed up as: less moralizing, more money. In other words, the pursuit of prosperity takes precedence over lofty rhetoric about democracy. This, in his telling, is a recipe for peace and stability. Tuesday’s speech in Riyadh was not, of course, the speech the last Republican president, George W. Bush, would have…