The word "strategy" pervades American conversation and our news media and is most often used as a general term for a plan, a concept, a course of action, or a "vision" of the direction in which to proceed at the personal, organizational, and governmental—local, state, or federal—levels. Such casual use of the term to describe nothing more than "what we would like to do next" is inappropriate and belies the complexity of true strategy and strategic thinking. This "little book" talks about big strategy, strategy at the highest levels of the nation-state. It is applicable to grand strategy, national security strategy, national military strategy, and regional or theater strategy. The monograph does not propose a strategy for the United States; rather, it provides a framework for considering strategy at any of the levels mentioned above. It is an examination of theory, exploring those aspects of strategy that appear to have universal application. The theory also may have application to the strategy of nonstate actors, institutions, and businesses, but the explicit purpose and perspective offered herein focus on the nation-state.