His inchoate appreciation for nonviolence accords with another major empirical finding in the social sciences. In a new book, "The Better Angels of Our Nature," Steven Pinker shows that international actors are laying down their arms. In fact, we are currently experiencing the most peaceful period in human history, notwithstanding sensationalist media stories to the contrary. This trend holds true across indicators of international violence ranging from homicide rates to genocide, infanticide, rape, slavery, torture, war, wife-beating — even animal cruelty. In a related work, "Winning the War on War," Joshua Goldstein details the global decline in armed conflict that began after the Second World War and accelerated after the Cold War. Fewer wars are starting, more are ending, and those that remain are smaller, more localized and less deadly relative to the world population.