The destruction of the Armenians of the Ottoman Empire in 1915-16 was the greatest atrocity of World War I. Around one million Armenians were killed, and the survivors were scattered across the world. Although it is now a century old, the issue of what most of the world calls the Armenian Genocide of 1915 is still a live and divisive issue that mobilizes Armenians across the world, shapes the identity and politics of modern Turkey, and has consumed the attention of U.S. politicians for years. In Great Catastrophe, the eminent scholar and reporter Thomas de Waal looks at the aftermath and...