2Sun Tzu in Space provides a novel way of thinking about the future, connecting international relations, history, and science fiction to better understand some of the various paths for future human activities in space. Simultaneously, it provides a way to use science fiction to help students and the public learn about international relations and the cyclical nature of history. Author Gregory D. Miller uses case studies, history, and foundational international relations concepts to draw big, or at least possible, conclusions about humanity's future in space. By combining the lessons of science fiction, and the facts of the past, Miller presents possible outcomes with a goal of illuminating where things could go wrong, or wonderfully right, as humans venture forth into space in greater numbers in the in the decades to come.