Only with the three largest emitters (the EU, China and the US) building a coalition was it possible to conclude the Paris Agreement in 2015. With the announced withdrawal of the US, the interdependence between the EU and China has increased significantly. Both actors have reiterated their will to implement the Paris Agreement and to cooperate on climate change. In times of political constraints between the EU and China, this seems puzzling. The paper takes a role-theoretic perspective to assess the following question: How can the changing roles of the EU and China, ascribed to them by external and internal expectations, explain their increased climate cooperation? It draws on a qualitative text analysis of policy documents and expert interviews. The paper concludes with a discussion of the findings against the backdrop of growing tensions between the EU and China.
Cooperation between states takes place in International Organizations (IOs) and Regional Organizations (ROs). Since we know more about the evolution of cooperation in IOs than ROs, this paper examines trajectories of regional cooperation. Based on a novel dataset, it provides a descriptive analysis of how all 76 ROs developed over time. This reveals that regional cooperation evolved in two waves with respect to RO size as well as the policy areas of cooperation. The paper adopts an explorative approach to examine these patterns. This reveals that ROs with regional courts and ROs which adopt a model of dynamic change are more likely to broaden their policy scopes. In addition, during the Cold War, ROs with initially broad policy scopes were less likely to obtain additional competencies, while after 1990 ROs were more likely to broaden their policy scopes when they are large in size, when their members are economically strong and when majority decisions are possible in their day-to-day operation.
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