“Let’s think about the Iran war in the light of Donald Trump’s career to date,” writes New York Times columnist Ross Douthat. (Shannon Lin/The New York Times) By ROSS DOUTHAT Let’s think about the Iran war in the light of Donald Trump’s career to date. What has made him so historically significant, so effective as a politician in spite of all his sins and faults, so enduring and dominant in the American political landscape? One thing especially: an incredible instinct for the weaknesses of...