Book excerpt: This volume considers recent studies that move beyond primordialism and its antithesis, social constructivism, to search for new insights to illuminate the nature of nationalism and its link to war. The authors also explore the role of shared interests, the history of peoples, elites and states, political imperatives, propaganda, and psychological predispositions. This combination provides a brillant, new look at nationalism and war-one that delves deeply into ethnic identity and the willingness of people to fight and die for nation-states.