given both the urgency and global nature of climate change, the issue cannot be siloed into U.S. State Department or Energy Department offices and spheres of diplomacy. Many aspects of U.S. foreign policy will impact, and be impacted by, climate change. An effective foreign policy requires taking climate change directly into consideration—not just as a problem to resolve, but as an issue that can affect the success and failure of strategies in areas as varied as counterterrorism, migration, international economics, and maritime security.