Following our bombing of Iran, we are hearing the usual caterwauling from the Left about international law. Of course, no one invokes international law when Iran kills our servicemen, or when Hamas massacres Israelis, or when Iran launches missiles against the United Arab Emirates, and so on. There is a certain asymmetry in the invocation of international law.I took a course in international law when I was in law school. It was taught by a distinguished scholar in that field. As I recall, the first section of the course was devoted to the question, is there such a thing as...