“Let’s get back to the Iran debate. The tried-and-true analogy, for people opposed to the deal, is of course the Munich agreement of 1938. The comparison works because it suggests that the enemy is implacably evil: Nazi Germany then, Iran now. And it works because it also suggests that people who consider themselves peacemakers are dupes: Chamberlain then, Kerry and Obama now. Google “Iran deal Munich” and you’ll see what I mean.