Book excerpt: "This new work defines national security strategy, its objectives, the problems it confronts, and the influences that constrain and facilitate its development and implementation in a post-Cold War, post-9/11 environment. The authors note that making and implementing national strategy centers on risk management and present a model for assessing strategic risks and the process for allocating limited resources to reduce them. The major threats facing the United States now come from its unique status as "the sole remaining superpower" against which no nation-state or other entity can hope to compete through conventional means. The alternative is what is now called asymmetrical or fourth generation warfare. Drew and Snow discuss all these factors in detail and bring them together by examining the continuing problems of making strategy in a changed and changing world."-- AU Press web site.