A prominent historian exposes the dark side of making war more humane In the years since 9/11, we have entered an age of endless war. With little debate or discussion, the United States carries out military operations around the globe. It hardly matters who's president or whether liberals or conservatives operate the levers of power. The United States exercises dominion everywhere. In Humane: How the United States Abandoned Peace and Reinvented War, Samuel Moyn asks a troubling but urgent question: What if efforts to make war more ethical-to ban torture and limit civilian casualties-have only shored up the military enterprise and made it sturdier? To advance this case, Moyn looks back at a century and a half of passionate arguments about the ethics of using force. In the nineteenth century, the founders of the Red Cross struggled mightily to make war less lethal even as they acknowledged its inevitability. Leo Tolstoy prominently opposed...