Del Monte’s latest book War at the Speed of Light: Directed-Energy Weapons and the Future of Twenty-First Century Warfare explores how lasers, electromagnetic weapons, and other energy-based or -driven weapons could change how future wars are fought. Del Monte argues that these technologies will accelerate the pace of war. The use of directed-energy weapons will mean a faster time to kill resulting in smaller windows for decision making at all levels of conflict. Taken together with artificial intelligence and cyber weapons, Del Monte argues that these changes will upend strategic stability as we understand it today.