The best books that explain why the First World War happened

There are many different vantage points from which to view the road to war in 1914, but an essential one is that which focuses on the ethos, politics, and strategy of one of the constellations of European Great Powers. In the 1980s, Macmillan published a series of books focusing on each of these, written by acknowledged experts (Zara Steiner on Britain, John Keiger on France, Dominic Lieven on Russia, Volker Berghahn on Germany, Richard Bosworth on Italy). The last in the series appeared in 1990, when Samuel Williamson published his study of Austria-Hungary.

It was well worth the wait. Comprehensive in its structure, balanced in its judgments, meticulous in its research, Williamson established a new standard for studies of the Great Powers. His conclusion – that Austria-Hungary was largely responsible for initiating the July Crisis and, ultimately, the war itself – is persuasively argued and the story compellingly told.

John Keiger followed his study of French foreign policy with a ground-breaking biography of the most important Frenchman of the day, Raymond Poincaré. Readers have a multitude of biographies to turn to in their quest for an explanation of the war’s origins: the rulers of Russia, Germany, and Austria-Hungary; the leading politicians, foreign ministers, strategists, and diplomats of most of the states involved. But no biographical study has surpassed Keiger’s.

Poincaré was a pivotal figure in the diplomacy and politics of Europe before the war, serving in numerous positions, including those of foreign minister, prime minister, and president. His devotion to the alliance with Russia and his distrust of Germany led his critics to denounce him for his role in the outbreak of war. Keiger’s magnificent biography provides us with an elegantly written, thoroughly researched, and nuanced account of Poincaré’s role and policies.

The First World War broke out in August 1914; by September 1914 articles and essays began to appear that defended – or attacked – the policies of the men responsible for the July Crisis. Books soon followed. And they have never stopped. No crisis in history has received more attention than that of July 1914. The topic, with its vast complexities, missed opportunities, and contradictory explanations, continues to fascinate us.

No book on the subject is more captivating than Thomas Otte’s day-by-day unravelling of the complicated diplomacy pursued by the statesmen of Europe. His mastery of the subject is impressive (he has written dozens of articles and essays on the diplomacy of prewar Europe) and his balanced treatment of the topic serves as a model of dispassionate scholarship.

One of the most enduring explanations for the outbreak of war in 1914 is that of ‘imperialism’. The argument that competition for resources beyond the ‘natural’ frontiers of European states created bitter rivalries among the Great Powers had been made many times before 1914, whenever a crisis in Africa, Asia, or the Middle East threatened to turn into a shooting war. But disentangling the complex motives, strategies, and tactics that intersected Great Power politics is a daunting task.

One of the finest case studies of the imperial mentalité can be found in Bobroff’s fascinating book. Not only does he break new ground in this study, but he has mined the Russian archives to great effect, moving the subject along from grand, unproven assertions concerning Russian policies to a detailed and persuasive understanding of both their ambitions and their fears.

One of the most popular explanations for the outbreak of war between 1918 and 1939 was that it had been caused by the ‘Merchants of Death,’ i.e. the large armaments firms and their financiers who profited from international animosity. Although the conspiracy theory tendency in this belief gradually dissipated, the idea that the arms race was a significant contributory factor leading to war has long featured on any list of ‘causes’.

David Stevenson’s exhaustive research in the archives of most of the combatant states has provided us with massive and fascinating detail on the thinking of those involved and the relationship between geopolitical ambitions, strategic calculations, and financial realities. His treatment makes for fascinating reading, enhanced by crisply argued interpretations of the role of military and naval preparedness in the crises that plagued prewar Europe.