Advocacy and Change in International Organizations is a highly significant contribution to the literature on IOs. The book provides readers with an innovative theoretical framework that will help many scholars tackle related questions in the future ... This approach makes this book special and a contribution that offers enormous added value, both theoretically and empirically. Scholars interested in IO change, international norms, and peacekeeping should, therefore, closely examine Oksamytna's arguments and findings. Yet the results are also highly relevant for practitioners in and around IOs.