Book excerpt: This groundbreaking book brings an important spatial perspective to our understanding of genocide through a fresh interpretation of Germany under Hitler, Cambodia under the Khmer Rouge, and China's Great Leap Forward famine under Mao. James A. Tyner's powerful analysis of these horrifying cases provides insight into the larger questions of sovereignty and state policies that determine who will live and who will die. Specifically, he explores the government practices that result in genocide and how they are informed by the calculation and valuation of life-and death. A geograp.