In the June issue of this journal (International Relations, Vol. 30, No. 2, pp. 127–153), we published an article entitled ‘International Relations in the prison of Political Science’ by Justin Rosenberg. It was an article we have been pleased to promote because it is rich in learning and thought-provoking in its ideas about the history and future of the discipline. Convinced that this will be a reference point in the continuing and necessary debate about International Relations (IR) as an academic project, we asked a small group of scholars associated with different theoretical perspectives to offer their comments on the article in order to carry forward the conversation about the what/who/how/and why of IR. Four brief essays follow, ending with Professor Rosenberg’s right of reply.