Call him the Third Man. For all the talk about how Prime Minister Netanyahu’s speech to the Joint Meeting of Congress was a showdown with President Obama, I can’t help but sense a deeper drama. It was not merely a political contest between the leaders of two democracies. It was also a matter between the young boy Benjamin Netanyahu and one of the strongest and most learned Zionists in Israel’s history, his own father, the historian Benzion Netanyahu. I didn’t know the father well.