In this epic history of extermination and survival, Timothy Snyder presents a new explanation of the great atrocity of the twentieth century, and reveals the risks that we face in the twenty-first. Based on untapped sources from eastern Europe and forgotten testimonies from Jewish survivors, recounts the mass murder of the Jews as an event that is still close to us, more comprehensible than we would like to think and thus all the more terrifying. By overlooking the lessons of the Holocaust, Snyder concludes, we have misunderstood modernity and endangered the future. The early twenty-first century is coming to resemble the early twentieth, as growing preoccupations with food and water accompany ideological challenges to global order. Our world is closer to Hitler’s than we like to admit, and saving it requires us to see the Holocaust as it was—and ourselves as we are. Groundbreaking, authoritative, and utterly absorbing, reveals a Holocaust that is not only history but warning.