The Jewish community has been energetic lately in disciplining Jews who say the wrong thing about Israel. In January, the American Jewish Committee branded Jewish leftwing Israel critics as inciters of antisemitism. Meanwhile, when the Jewish anti-Zionists of Neturei Karta sent representatives to meet with Iran’s notorious president, Jews of all persuasions howled in outrage at the ultra-Orthodox eccentrics. Then there is Alan Dershowitz, with his tireless crusade against anti-Israel professor Norman Finkelstein. And so it goes. I’m taking a bit of a risk, then, in admitting here that—precisely because I’m an Orthodox Jew—I am not a Zionist. This is...