Margaret MacMillan looks at the ways in which war has influenced human society and how, in turn, changes in political organization, technology, or ideologies have affected how and why we fight. War: How Conflict Shaped Us explores such much-debated and controversial questions as: When did war first start? Does human nature doom us to fight one another? Why has war been described as the most organized of all human activities? Why are warriors almost always men? Is war ever within our control?

Amid the ravages of economic depression, Germans in the early 1930s were pulled to political extremes both left and right. Then, in the spring of 1933, Germany turned itself inside out, from a deeply divided republic into a one-party dictatorship. In Hitler's First Hundred Days, award-winning historian Peter Fritzsche offers a probing account of the pivotal moments when the majority of Germans seemed, all at once, to join the Nazis to construct the Third Reich.

Discover the definitive history of DARPA, the Defense Advanced Research Project Agency, in this Pulitzer Prize finalist from the author of the New York Times best seller Area 51. No one has ever written the history of the Defense Department's most secret, most powerful, and most controversial military science R&D agency. In the first-ever history about the organization, New York Times best-selling author Annie Jacobsen draws on inside sources, exclusive interviews, private documents, and declassified memos to paint a picture of DARPA, or "the Pentagon's brain".

Robert Tombs' momentous The English and Their History is both a startlingly fresh and a uniquely inclusive account of the people who have a claim to be the oldest nation in the world. The English first came into existence as an idea, before they had a common ruler and before the country they lived in even had a name. They have lasted as a recognizable entity ever since, and their defining national institutions can be traced back to the earliest years of their history.

Zero day: a software bug that allows a hacker to break into your devices and move around undetected. One of the most coveted tools in a spy's arsenal, a zero day has the power to silently spy on your iPhone, dismantle the safety controls at a chemical plant, alter an election and shut down the electric grid (just ask Ukraine). For decades, under cover of classification levels and non-disclosure agreements, the United States government became the world’s dominant hoarder of zero days.