Nathan A. Kurz charts the fraught relationship between Jewish internationalism and international rights protection in the second half of the twentieth century. For nearly a century, Jewish lawyers and advocacy groups in Western Europe and the United States had pioneered forms of international rights protection, tying the defense of Jews to norms and rules that aspired to curb the worst behavior of rapacious nation-states. In the wake of the Holocaust and the creation of the State of Israel, however, Jewish activists discovered they could no longer promote the same norms, laws and innovations...