Abstract Regional conflicts increasingly require multilevel efforts by regional, subregional, and international actors. When states are confronted with a cooperation problem, often there are several institutions available to address this issue. Drawing on the literature of overlapping regionalism and forum-shopping, we argue that existing explanatory models benefit from adding power-based explanations. By conceptualizing an issue-specific dimension and factors specific to the national environment as additional power-based criteria for forum-shopping, we expand the existing literature. Applying our framework to the response to the Boko Haram uprising, our study examines why Nigeria preferred specific regional entities to others. We find that Nigerian resistance toward external intervention and hegemonic interests inherent in national elites as power-based aspects of forum-shopping explain the counterintuitive creation of the Multinational Joint Task Force (MNJTF) under the umbrella of the rather unknown Lake Chad Bassin Commission (LCBC) instead of reliance on the Economic Community of West African States (ECOWAS) or the African Union (AU) as important security providers in Africa.