Rethinking ‘middle powers’ as a category of practice: stratification, ambiguity, and power

Scholars have attempted to theorise the social structure of the international system from the perspective of the ‘middle powers’ for decades. However, scholars have struggled to agree on the essential dispositional characteristics of this category of actors, stunting theoretical progress. Drawing on sociological and literary approaches to the rhetoric of the ‘middle class’ in domestic societies, this article shifts the terms of this debate away from asking who the ‘middle powers’ are or what their ‘essence’ is, to ask what actors do with the term in practice. Combining this with and contributing to scholarship on hierarchy in international relations, I recast ‘middle powers’ as a category of practice and argue that one of the term's main uses is to differentiate certain status-anxious states – that hold no real prospect of achieving great power status – from ‘small states’ that occupy the lowest stratum of stratification within the ‘grading of powers’. Following an illustrative case study of Australian and Canadian attempts to establish the ‘middle power’ category in the 1940s, the article then outlines the contributions of the argument for the study of status and hierarchy in world politics.