Washington must awaken to the broader economic and security implications of climate change. The melting Arctic is the proverbial canary in the coal mine of planetary health and a harbinger of how the warming planet will profoundly affect U.S. national security. Being green is no longer a slogan just for Greenpeace supporters and campus activists; foreign policy hawks must also view the environment as part of the national security calculus. Self-preservation in the face of massive climatic change requires an enlightened, humble, and strategic response. Both liberals and conservatives in the United States must move beyond the tired debate over causation and get on with the important work of mitigation and adaptation by managing the consequences of the great melt.