George, Nicholas and Wilhelm: Three Royal Cousins and the Road to World War I by Miranda Carter

In the years before the First World War, the great European powers were ruled by three first cousins: King George V of Britain, Kaiser Wilhelm II of Germany, and Tsar Nicholas II of Russia. Together, they presided over the last years of dynastic Europe and the outbreak of the most destructive war the world had ever seen, a war that set twentieth-century Europe on course to be the most violent continent in the history of the world.
 
Through brilliant and often darkly comic portraits of these men and their lives, their foibles and obsessions, Miranda Carter delivers the tragicomic story of Europe’s early twentieth-century aristocracy, a solipsistic world preposterously out of kilter with its times.