This book explores the growing importance of subnational diplomacy by examining the state of California. As the fifth largest economy in the world, Californiäs tribes, counties, cities and the state itself are changing the shape of diplomatic theory and practice and defining what it means to be a ¿global¿ state. As both a theoretical text and a practical guide, this book offers a current snapshot of California, then connects this narrative to the fundamental international relations concepts of diplomacy and sovereignty and the working assumptions of professionals in the field. Through interviews with those representing all of the entities of the state - as well as