This book explores the complex relationship between grand strategy and energy security by conducting a focused, comparative study on the United States and China. By including energy security as a component of grand strategy, the author is able to present an analysis of the complex, multifaceted approaches large consuming states take to secure their critical energy supplies. Inclusion of energy as part of the core strategic agenda increases explanatory power and provides insights as to how states may elect to pursue supply security under times of greater scarcity, or increased conflict. A ranking system is also developed, allowing a more systematic approach to inform this qualitative study.