Is a humane war a contradiction in terms? Can rules be made and followed that limit the damage that wars do, or will that make conflict perpetual? Is it necessary and moral for the USA to continue to be the policeman of the world? Samuel Moyn joins Vasant Dhar in episode 16 of Brave New World to tackle the thorny ethical and practical questions around warfare and terrorism as technologies become more precise and lethal. Useful resources: 1. Humane: How the United States Abandoned Peace and Reinvented War -- Samuel Moyn. 2. Samuel Moyn's books on Amazon.