The sources of influence in multilateral diplomacy: Replaceability and intergovernmental networks in international organizations

While international historians and policy practitioners regularly highlight the utility of multilateral diplomacy as a quintessential “strategy of the weak,” International Relations (IR) scholars have generally downplayed the impact of diplomatic choices. The tools within IR theory to assess the impact of diplomacy remain underdeveloped, contributing to an inability to account for a highly proximate source of international influence. This article argues for a theoretical reengagement with the subject of multilateral diplomacy and, using insights from Social Network Analysis, develops a Diplomatic Impact Framework. Building on the novel concept of replaceability, the article contributes theoretically to the literature on diplomacy, as well as on small and middle powers. This framework captures the fundamentally relational character of diplomacy, isolating analytically this form of structural power from the influence conferred by superior material or institutional resources. Drawing extensively on a multinational collection of diplomatic documents and first-hand accounts, this multidisciplinary article probes the plausibility of the framework through a detailed comparative case study of Canada’s diplomatic influence at the United Nations General Assembly throughout two international security crises: the Korean War and the Suez Crisis.