- Brian C. Schmidt
This chapter focuses on national security, a central concept in foreign policy analysis. A core objective of foreign policy is to achieve national security. However, there is a great deal of ambiguity about the meaning of the concept. Although the traditional meaning of national security is often associated with protecting the sovereignty, territorial integrity, and security of the nation state, this does not exhaust all of the possible meanings. The chapter examines some of the competing conceptions of national security, beginning with the three main assumptions of realism that together help to account for the primacy of national security: statism, survival, and self-help. It then considers the field of security studies before concluding with an assessment of the theoretical controversy about the meaning of national security and how it relates to three American grand strategies: neo-isolationism, liberal internationalism, and primacy.