This chapter presents major nodes of research and analysis around climate change and security linkages, around more attempts to link security to the resource nexus, and the need to position equity and justice-related concerns at the center of the complex perspectives. It explores a broad view of security at national, regional, and global scales, which span the traditional geopolitical definition to include perspectives on water, energy, and food securities as key elements of economic and physical security. The chapter suggests that better and more integrative resource planning might alleviate some of the related stresses – stresses that traditional security analysis and research are also grappling with as geopolitics and resource conflicts receive increased attention. It also explores the role of climate change in increasing the challenges of responding to water and food security challenges, and considers the roles of trade and localization in reducing those stresses.