This is the author accepted manuscript. The final version is available from Taylor & Francis via the DOI in this recordJustin Rosenberg rightly highlights the paucity of International Relations’ (IR) influence in other disciplines, and selected works in historical sociology demonstrate the significance of the international to others whilst also revealing problematic understandings of the international itself. In this regard, Rosenberg’s intervention is welcome. However, in staking the disciplinary credentials of IR) on ‘societal multiplicity’, Rosenberg inadvertently exposes IR as part of a wider convergence on the ontological importance of relations (rather than substances) across the social sciences. Historical sociology scholarship...