A study of the major concepts, theories, methods, and issues involved in international security. The course considers competing contentions about how security should be understood and the impact of such debate on the evolving subfield of security studies. It covers traditional security topics like conventional weapons proliferation, militarized interstate disputes, nuclear deterrence, and international terrorism as well as emerging issues involving criminal, energy, environmental, and cyberspace security. Prerequisite: POLS 150 or INGS 200.