This thesis examines climate change, the negative impacts of climate change, and the purview of the United Nations Security Council, in order to demonstrate that the effects of climate change on international peace and security render it an area that the Security Council should address. Climate change is defined, and the inequality inherent in the climate crisis is described. This history of the international debate on climate change is briefly outlined, and the inadequacies of attempts to date to establish effective international agreements on the reduction of green house gas emissions are outlined.The extreme vulnerability of the Global South is outlined in detail, with specific reference to coastal regions, landlocked nations, urban areas, and Island States. The impacts of climate change are found to violate basic human rights recognized by the United Nations, including access to clean drinking water, recognized as a human right by the UN in 2010, and access to adequate housing, recognized in the UN Habitat Agenda. The vulnerability factors that characterize the urban areas of the Global South are identified as unchecked urbanization, rapid population growth, and inadequate infrastructure. When these factors are combined with the rapidly increasing impacts of climate change, such as rising sea levels, soil impermeability due to drought and deforestation, the risks to entire populations’ access to essential resources is jeopardized. Violations of the rights of sovereign nations as established in the UN Charter are also found to be caused by climate change. In particular, Article 2, subsections 1, 2, and 4, which establish sovereignty, the right to self determination, and protection against threats of violence from other UN Member States, are all potentially violated by any action that directly contributes to climate change. Subsection 4 is most strongly violated by the threats of annihilation represented by rising sea levels.The one-sided imposition of Western perspectives on climate change that ignore the Global South further exacerbate the effects of environmental transformations. The sustainable development discourse has been accused of progressing in a manner that veils attempts to impose top-down market systems that favour the Western world economically, while failing to achieve actual gains as regards the reduction of green house gas emissions. Involvement of the UN Security Council is therefore found to be necessary in order to achieve better coordination and a more balanced and representative interpretive approach to resolving the climate issue, which poses serious risks as regards international peace and security. Considered a “threat multiplier”, climate change has the potential to both escalate existing conflicts and to create new disputes over such resources as food, water, and arable land.The permanent members of the Security Council - China, France, the Russian Federation, the United Kingdom and the United States – have now accepted that climate change threatens international peace and security. The Council must now use the resources at its disposal to fulfill its mandate to maintain international peace and security, develop friendly relations among nations, cooperate in solving international problems and promote respect for human rights. The passing of Security Council resolutions regarding the emission of green house gasses would be a more effective method of establishing internationally binding norms than the relatively unsuccessful negotiations and Accords that have been undertaken to date. The Council’s intervention in violent conflicts may be also be necessary as international tension and instability resulting from the impacts of climate change increase. The main obstacle to effect action by the Security Council in this respect is found to be resistance from the United States and any other permanent member of the Security Council who may use their veto power to block effective action in respect of climate change.