This book explores East Asia's and the Asia Pacific's energy security exploring key issues including major trans-border energy projects, major country's energy mix policy, trans- border pipelines, LNG transfer between nations, balance of power relations between major powers, the North Korean energy situation, energy alliances, Belt and Road Initiative, Indo-Pacific Strategy, World Choke point and more. In particular, this book provides the detailed analysis of the current problems of energy security and diplomacy among various countries as well as policy implications. It will clearly serve as a manual to enhance energy security in the region and boost energy transaction as well as the pioneering step to conceptualize the notion of energy security among political circles, in the diplomatic community and energy industry as well as international relations academics.