Abstract

This chapter examines various dimensions of security and insecurity within states. It first considers different conceptualizations of security and the range of areas within which it may be applied before discussing security and insecurity in the state of nature. It then explores the impact of security and insecurity on global politics, Thomas Hobbes' ideas about security and insecurity, and collective security as embodied in the United Nations (UN). It also reviews some pressing security challenges in the post-Cold War period and the broadening of the security agenda to encompass more recent concerns such as human security, environmental security, and energy security. Finally, it analyses the ‘war on terror’ that came in response to 9/11, raising further questions concerning how best to deal with nonconventional threats.