The historian Max Hastings had described the Second World War as primarily the death grapple between two gargantuan monsters — Adolf Hitler’s Nazi armies against Josef Stalin’s Soviet forces. The rest, Winston Churchill’s speeches and the American struggle against Japan in the Pacific, was at the most a sideshow and that is true as the nationality of those killed reveals. The great contest of our time is also between just two powers: Donald Trump’s United States of America and Xi Jinping’s People’s Republic of China. The rest of the world is a noisy sideshow. The contest between America and China...