This article aims to explore International Relations through the lenses of the English School and through the case study of the United Nations Framework Convention on Climate Change (UNFCCC) and Cop26. In particular, the article aims to analyse the most notable concept created by the English School: International Society. To do so, the article starts oﬀ with a brief overview of the English School to cover its history and its place in IR, and then presents its three main concepts: International System, International Society, and World Society. Focusing on International Society, the article proceeds to describe the two main theoretical approaches of the International Society, that is Pluralism and Solidarism. Moreover, the article presents the debate between Order and Justice within the International Society. Finally, the article presents the existing international cooperation coping with climate change through the case study of the United Nations Framework Convention on Climate Change (UNFCCC) and Cop26. The article presents it by applying the principles of the International Society and aims to demonstrate the reasons why the English School and International Society are better suited concepts than the more traditional theories of IR to understand why there exists international cooperation to deal with climate change.