This brilliant set of essays poses the paradigmatic question: are Jews in grave danger today or not? Concern is rooted in the storm clouds of 1938, when the same question arose just prior to the outbreak of the Second World War and the Holocaust. The contributors do not presume that the events of seventy years ago are identical with those today, or that they emanate from the same sources. However, the shared feeling is that Jewish communities worldwide are very much, once again at risk.

In post-1938 Germany, the Nazi state began its march toward world conquest, with the...