This document discusses the links between climate change and food security. It notes that the IPCC has found considerable evidence that human activities are causing climate change. Climate change is affecting food security through rising temperatures, changing rainfall patterns, seasonal extremes, glacial melting, floods, and sea water intrusion. Food production contributes to climate change through being energy intensive and requiring increased inputs for responsive varieties. The document advocates addressing national security through reducing vulnerabilities to climate change at individual, national and regional levels. It argues that climate change should be viewed as a security threat rather than just an environmental issue.