The legal aspects at the junction of interstate energy cooperation have become increasingly important in a world that is hungry for energy security. This book focuses on selected legal issues relating to international energy governance. International law as it stands today is not well equipped to handle international energy governance issues fully. This legal deficiency affects energy security negatively. If the currently fragmented and multi-layered international energy governance regime were streamlined for greater legal cohesiveness and international political and economic cooperation, it would promote energy security. Some chapters of the book take a broader view on interstate energy cooperation, such as energy transit, energy market liberalization and energy investment. Others focus on specific areas of such cooperation, such as trade and energy; trade, environment and energy; and energy exploration and maritime delimitation disputes. The book also presents an analysis of European Union energy governance and renewable energy.