It has become commonplace to observe the growing pervasiveness and impact of Non-Governmental Organizations (NGOs). And yet the three central approaches in International Relations (IR) theory, Liberalism, Realism and Constructivism, overlook or ignore the importance of NGOs, both theoretically and politically.

Offering a timely reappraisal of NGOs, and a parallel reappraisal of theory in IR-the academic discipline entrusted with revealing and explaining world politics, this book uses practice theory, global governance, and new institutionalism to theorize NGO accountability...