JOEL KOTKIN: The Jewish World is Contracting Toward U.S., Israel. “Recent anti-Semitic events – from France and Belgium to Argentina – are accelerating the relentless shrinking of the Jewish Diaspora. Once spread virtually throughout the world, the Diaspora – the scattering of Jews after the fall of ancient Israel – is retreating from many of its global redoubts as Jews increasingly cluster in two places: Israel and the United States. Seventy years after the liberation of Auschwitz, Jewish communities throughout Europe are again on the decline. This time, the pressure mainly comes not from the traditional anti-Semitic Right but from Islamic fundamentalists, which include many European citizens.”