Is climate change a threat to international peace and security? If so, what actions, if any, should the United Nations Security Council (“Council”) take to combat the climate crisis? Scientists and security professionals alike predict massive climate destabilization this century to include climate migration, competing resource wars, and violent conflict. And four island nations will be uninhabitable by mid-century, threatening their territorial integrity and very sovereignty. In this Article I argue that climate change can no longer be conceptualized as a future environmental and sustainability issue that the Council can ignore. Rather, climate change is a complex security threat that will increasingly stress and test international institutions and existing governance models. Yet is a “Climate-Security Council” truly realistic in light of the Council’s institutional design and current political paralysis? What could spark Council climate action? And how should the Council respond to the climate crisis? I address these questions, and others, proceeding in four parts. I first describe climate change’s security impacts, analyzing climate change’s cataclysmic impacts on international peace and security. Second, I analyze the Council’s gradual willingness to tackle non-traditional security threats, thus offering a possible roadmap for future climate action. In doing so, I analyze climate change’s existential threat to several island nations, a vanguard climate-security challenge that strikes at the core of the Council’s authority and legal responsibilities. Third, I address the challenges and opportunities represented by any Council climate action. I conclude by arguing that the Council should explicitly declare climate change a threat to international peace and security. Doing so unlocks the door to a menu of legally binding Council actions necessary to meet the existential challenges of our “climate security century.”
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