This book offers a wide-ranging and comprehensive analysis of the growing field of critical security studies. Topics covered include the relationship between security and change, identity, the production of danger, fear and trauma, human insecurity and emancipation. The book explores the meaning and use of these concepts and their relevance to real-life situations ranging from the War on Terror to the Arab Spring, migration, suffering in war, failed states and state-building, and the changing landscape of the international system, with the emergence of a multipolar world and the escalation of global climate change.