Book excerpt: Drones are the iconic military technology of many of today's most pressing conflicts. Drones have captured the public imagination, partly because they project lethal force in a manner that challenges accepted norms and moral understandings. Drone Wars presents a series of essays by legal scholars, journalists, government officials, military analysts, social scientists, and foreign policy experts. It addresses drones' impact on the ground, how their use adheres to and challenges the laws of war, their relationship to complex policy challenges, and the ways they help us understand the future of war. The book is a diverse and comprehensive interdisciplinary perspective on drones that covers important debates on targeted killing and civilian casualties, presents key data on drone deployment, and offers new ideas on their historical development, significance, and impact on law and policy.