Book excerpt: "Future-oriented questions are woven through the study and practice of international security. The 48 essays collected in this Handbook use such questions to provide a tour of the most innovative and exciting new areas of research as well as major developments in established lines of inquiry. The results of their efforts are: the definitive statement of the state of international security and the academic field of security studies, a comprehensive portrait of expert assessments of expected developments in international security at the onset of the twenty-first century's second decade, and a crucial staging ground for future research agendas." --Descripción del editor.