Our edited volume “Security Expertise: Practice, Power, Responsibility” is now available in paperback. Published last year the book explores the role and functions of experts in security politics. The book argues for a strengthened dialogue between Science and Technology Studies and Security Studies and offers a range of empirical explorations of experts in security politics. Three chapters by Robert Evans, Gil Eyal and Tom Osborne set the scene in outlining different ways of conceptualizing experts and expertise. The chapters by Ole Waever and James McGann discuss the field of security and the knowledge it produces. This is followed by chapters by Judith Reppy, Saul Halfon, Lisa Stampnitzky, Hugh Gusterson, Richard Jackson, Mikkel Vedby Rasmussen, and Piki Ish Shalom which reflect on core questions of expertise in the light of empirical issues such as human security, terrorism, civil-military relations, or the human terrain project.