Security Studies is the most comprehensive textbook available on security studies. Comprehensively revised for the new edition including new chapters on Polarity Culture Intelligence & the Academic & Policy Worlds it continues to give students a detailed overview of the major theoretical approaches key themes & most significant issues within security studies. Part 1 explores the main theoretical approaches currently used within the field from realism to international political sociology. Part 2 explains the central concepts underpinning contemporary debates from the security dilemma to terrorism. Part 3 presents an overview of the institutional security architecture currently influencing world politics using international regional & global levels of analysis. Part 4 examines some of the key contemporary challenges to global security from the arms trade to energy security. Part 5 discusses the future of security. Security Studies provides a valuable teaching tool for undergraduates & MA students by collecting these related strands of the field together into a single coherent textbook. Contributors: Richard J. Aldrich Deborah D. Avant Sita Bali Michael N. Barnett Alex J. Bellamy Didier Bigo Pinar Bilgin Ken Booth Barry Buzan Stuart Croft Simon Dalby John S. Duffield Colin Elman Louise Fawcett Lawrence Freedman James M. Goldgeier Fen Osler Hampson William D. Hartung Michael Jensen Adam Jones Danielle Zach Kalbacher Stuart J. Kaufman Michael T. Klare Peter Lawler Matt Mc Donald Colin Mc Innes Cornelia Navari Michael Pugh Paul R. Pillar Srinath Raghavan Paul Rogers Waheguru Pal Singh Sidhu Joanna Spear Caroline Thomas Thomas G. Weiss Nicholas J. Wheeler Sandra Whitworth Paul D. Williams Phil Williams & Frank C. Zagare.