This edited volume provides an inclusive explanation of what, why, and how cities interact with global counterparts as well as with nation states, non—governmental organizations, and foreign publics. The chapters present theoretical and analytical approaches to the study of city diplomacy as well as case studies to capture the nuances of the practice. By bringing together a diverse group of authors in terms of their geographic location, academic and practitioner backgrounds, the volume speaks to multiple disciplines, including diplomacy, political science, communication, sociology, marketing and tourism.