" When is a war not a war? When it is undertaken in the name of democracy, against the forces of racism, sexism, and religious and political persecution? This is the new world of warfare that Neda Atanasoski observes in Humanitarian Violence, different in name from the old imperialism but not so different in kind. In particular, she considers U.S. militarism--humanitarian militarism--during the Vietnam War, the Soviet-Afghan War, and the 1990s wars...

We've all asked, "What is the world coming to?" But we seldom ask, "How bad was the world in the past?" In this startling new book, cognitive scientist Steven Pinker shows that the past was much worse. Evidence of a bloody history has always been around us: genocides in the Old Testament, gory mutilations in Shakespeare and Grimm, monarchs who beheaded their relatives, and American founders who dueled with their rivals. The murder rate in medieval...