Review: The study examines Nigerian subregional diplomacy: study of Nigeria’s role in promoting West African Institutions The study focuses on Nigeria’s relations with West African institutions such as the Lake Chad Basin Commission, the Gulf of Guinea Commission and the Economic Community of West African States (ECOWAS). The authors consider in detail Nigeria’s national interests vis-à-vis West African institutions and Member States. To achieve the objective of the study, the authors pay particular attention to Nigeria’s bilateral relations with neighbouring States and cooperation with African institutions. The study is based on the theory of political realism, which implies constant competition among States defending their national interests. In the process of studying this problem, the authors apply institutional, analytical and problem-chronological methods. The main conclusions of the study are the establishment of Nigeria’s role in the settlement of border and territorial disputes, which enabled the state to interact and cooperate with its neighbours, the importance of Nigeria’s contribution to the peacekeeping of the region, Identifying the stability of Nigeria’s foreign policy towards both Africa as a whole and neighbouring States, analysing the main problems of the West African region, which is the basis of Nigeria’s subregional diplomacy: insecurity, political instability and economic imbalance. Moreover, the authors provide critical analysis of Nigeria’s institutional cooperation. The relevance of the study is due to the growing political and economic influence of Nigeria on the African continent.

Keywords: Economic Community, African Union, Anticolonialism, Leadership, ECOWAS, West Africa, Subregional Diplomacy, Nigeria, Mutual Interests, West African Institutions