Book excerpt: Islam in International Relations: Politics and Paradigms analyses the interaction between Islam and IR. It shows how Islam is a conceptualization of ideas that affect people’s thinking and behaviour in their capacity to relate with IR as both discipline and practice. This approach challenges Western-based and defined epistemological and ontological foundations of the discipline, and by doing so contributes to worlding IR as a field of study and practice by presenting and discussing a broad range of standpoints from within Islamic civilization. The volume opens with the presentation and discussion of the international thought of a major Muslim leader, followed by a chapter that addresses the ethical practice of IR, from traditional pacifism to modern Arab political philosophy. It then switches to applying constructivism as a tool to understand Islam in world affairs and proceeds to address the issue of how the ethnocentric approach of Western academia has hindered our understanding of world affairs. The volume moves on to address the ISIS phenomenon, a current urgent issue in world affairs, and closes with a look at Islamic geopolitics. This comprehensive collection will be of great interest to students, scholars and policy-makers with a focus on the Muslim world.