This edited volume analyzes national security issues with maritime implications, and, specifically, naval projects and postures of main South Atlantic countries: Brazil, Argentina, Nigeria, and South Africa. Additionally, it provides comprehensive and multi-level analysis of the interplay among national interests in the processes of demarcation of limits of the continental shelf and contention among Uruguay, Chile, Argentina, and the United Kingdom in the Southern Atlantic and the Antarctica. This book will interest scholars, researchers, and students in the fields of Latin American politics, regional studies, foreign and defense policy, and maritime security.