Who Cares about the Weather? Climate Change and U.S. National Security.

Is climate change a valid national security issue for the United States? Even taking a narrow definition of national security, there are clearly ways in which climate change already constitutes a national security concern for the United States. This article evaluates a number of these potential linkages including the directs effects of climate change on the territorial United States, the effects of climate change on the country's extraterritorial interests, and the security externalities of energy and climate change. I offer an account of Ònational securityÓ that is consistent with conventional understandings of security but that also leaves room for environmental harms. In so doing, I also identify criteria by which climate change could constitute a threat to national security. While some of these linkages--the risks from rising sea levels--may have been over-dramatized by enthusiastic advocates, other examples--such as the risks of extreme weather events both to the homeland and to America's strategic interests overseas--may be more likely to cause security problems for the United States in the short- to medium-run. ..PAT.-Unpublished Manuscript [ABSTRACT FROM AUTHOR]