The vast majority of people alive today have come of age in a world of remarkable stability, presided over by either one or two Superpowers. This is not to say the world has been peaceful; but it has, to a great extent, been predictable. As an increasing number of Great Powers jostle for regional supremacy, as well as competitive advantage in nuclear technology, artificial intelligence, space exploration, and trade, our world has become more fragile, unpredictable—and combustible.

Diplomat, conspirator, intelligence gatherer, propagandist, and charmer, Rogue Agent tells the colorful story of London’s key agent in Moscow during the first half of the twentieth century, Sir Robert Bruce Lockhart. Sir Robert Bruce Lockhart (1887–1970) was an impressive figure who played a vital role in both world wars. He was a man who charmed his way into the confidences of everyone from Leon Trotsky to Anthony Eden. A man whom the influential press baron Lord Beaverbrook claimed, "could well have been prime minister.”

In June 1944, an Allied army of British, American, and Canadian troops sought to open up a Second Front in Normandy. But they were not only fighting to bring the Second World War to an end. After decades of Anglo-American struggle for dominance, they were also contending with one another—to determine who would ascend to global hegemony once Hitler's armies fell. Marc Milner traces this bitter rivalry as it emerged after the First World War and evolved during the fragile peace which led to the Second.

In 1692 the people of Massachusetts were living in fear, and not solely of satanic afflictions. Horrifyingly violent Indian attacks had all but emptied the northern frontier of settlers, and many traumatized refugees—including the main accusers of witches—had fled to communities like Salem. Meanwhile the colony’s leaders, defensive about their own failure to protect the frontier, pondered how God’s people could be suffering at the hands of savages.

There was one submarine that outfought all other boats in the Silent Service in World War II: the USS Tang. Captain Richard Hetherington O’Kane commanded the attack submarine that sunk more tonnage, rescued more downed aviators, and successfully completed more surface attacks than any other American submarine. These undersea predators were the first to lead the offensive rebound against the Japanese, but at great cost: Submariners would have six times the mortality rate as the sailors who manned surface ships.