Book excerpt: Water–Energy–Food Nexus Narratives and Resource Securities: A Global South Perspective provides a knowledge synthesis on the water–energy–food (WEF) nexus, focusing primarily on the global south. By presenting concepts, analytical tools, and case studies, the book serves as a practical resource for researchers, policymakers, and practitioners in sustainability and functional roles across all three sectors. It addresses key issues related to data availability, tools, indices, metrics, and application across multiple scales, beginning with a summary of existing knowledge. Finally, it examines the WEF nexus, presents global insights, and discusses future considerations and implications. This book presents an overview of existing knowledge on the WEF nexus and examines how such research aligns with emerging global WEF nexus perspectives, making it ideal for professionals, government entities, private industry, and the general public. - Offers a conceptual framework on how to better understand the water–energy–food (WEF) nexus and its utility in natural resource management and sustainable development - Presents advanced analytical tools for the quantification of linkages, trade-offs, and synergies among WEF sectors - Utilizes global case studies to illustrate complexities across disciplines, geographies, and scales