Not in the Soviet orbit, of course, where Jews were again targeted as enemies of the state after a brief wartime reprieve. Nor across much of the Muslim world, where Jews were largely relegated to unequal status or persecuted outright, and increasingly associated with the newly established State of Israel after 1948. Yet in Britain, Europe, and other democratic societies, there were grounds for optimism. The horrors of Auschwitz-Birkenau and Treblinka, the mass executions at places such as Babyn Yar, the murder of 1.5 million Jewish children, and the cold bureaucratic efficiency of genocide itself seemed to mark a moral...