New Books in Diplomatic History

Zack Cooper, "Tides of Fortune: The Rise and Decline of Great Militaries" (Yale UP, 2025)

An ambitious look at how the twentieth century's great powers devised their military strategies and what their implications mean for military competition between the United States and China. How will the United States and China evolve militarily in the years ahead? Many experts believe the answer to this question is largely unknowable. But Zack Cooper argues that the American and Chinese militaries are following a well-trodden path. For centuries, the world's most powerful militaries have adhered to a remarkably consistent pattern of behavior, determined largely by their leaders' perceptions of relative power shifts. By uncovering these trends, this book places the evolving military competition between the United States and China in historical context.  Drawing on a decade of research and on his experience at the White House and the Pentagon, Cooper outlines a novel explanation for how militaries change as they rise and decline. Tides of Fortune examines the paths of six great powers of the twentieth century, tracking how national leaders adjusted their defense objectives, strategies, and investments in response to perceived shifts in relative power. All these militaries followed a common pattern, and their experiences shed new light on both China's recent military modernization and America's potential responses. Learn more about your ad choices. Visit megaphone.fm/adchoices

Giles Tremlett, "The International Brigades: Fascism, Freedom and the Spanish Civil War" (Bloomsbury, 2021)

When civil war broke out in Spain in 1936, tens of thousands of young men and women from across the world flocked there to fight against the Nationalist uprising. Though their history has been told before, Giles Tremlett’s The International Brigades: Fascism, Freedom and the Spanish Civil War (Bloomsbury, 2021) draws upon previously unavailable materials to tell the stories of the war they fought. Though these people came from a variety of backgrounds and held a range of different left-wing political views, what united them was their opposition to fascism. Despite their disorganization and lack of training, they made an impact on the battlefield soon after their deployment, and became a highly visible presence in the war against Francisco Franco’s Nationalist forces. While the Spanish Republic they fought for was ultimately defeated, Tremlett explains how many of those who served in the Brigades continued their struggle against fascism during the Second World War, reflecting the lasting legacy of their service for their cause. Learn more about your ad choices. Visit megaphone.fm/adchoices

Dan Reiter, "Untied Hands: How States Avoid the Wrong Wars" (Cambridge UP, 2025)

How do states advance their national security interests? Conventional wisdom holds that states must court the risk of catastrophic war by “tying their hands” to credibly protect their interests. Dan Reiter overturns this perspective with the compelling argument that states craft flexible foreign policies to avoid unwanted wars. Through a comprehensive analysis of key international crises, including the Berlin, Taiwan Straits, and Cuban Missile Crises, and the Korean and Vietnam Wars, Reiter provides new perspectives on the causes of wars, the role of international alliances, foreign troop deployments, leader madness, and the impact of AI on international relations. With critical insights into contemporary foreign policy challenges, such as America’s role in NATO, the risks of war with China, containing a resurgent Russia, and the dangers of nuclear war, Untied Hands: How States Avoid the Wrong Wars (Cambridge University Press, 2025) is essential reading for anyone interested in understanding how states can effectively manage international crises while avoiding the wrong wars. Dan Reiter is Samuel Candler Dobbs Professor of Political Science at Emory University. Leo Bader is a senior at Wesleyan University studying political theory and history. Learn more about your ad choices. Visit megaphone.fm/adchoices

Sarah E. K. Smith, "Trading on Art: Cultural Diplomacy and Free Trade in North America" (UBC Press, 2025)

hat is the relationship between culture and trade? In Trading on Art: Cultural Diplomacy and Free Trade in North America Sarah E. K. Smith, an Associate Professor in the Faculty of Information and Media Studies at Western University and the Canada Research Chair (Tier 2) in Art, Culture and Global Relations, examines the history of cultural relations between Canada, the USA and Mexico at the turn of the twenty-first century. The book considers how North America was conceptualised by cultural practices such as art and video, as well as how the arts engaged and responded to free trade agreements in that period. As the world confronts a very different trading and cultural context, the book is essential reading for anyone interested in the future, as well as the past, of cross-national cultural exchange. The book will also be available open access in 2026 Learn more about your ad choices. Visit megaphone.fm/adchoices

Sasha D. Pack, "The Deepest Border: The Strait of Gibraltar and the Making of the Hispano-African Border" (Stanford UP, 2019)

In his new book, The Deepest Border: The Strait of Gibraltar and the Making of the Hispano-African Border(Stanford, 2019), Sasha D. Pack considers the Strait of Gibraltar as an untamed in-between space—from “shatter zone” to borderland. Far from the centers of authority of contending empires, the North African and Southern Iberian coast was a place where imperial, colonial, private, and piratical agents competed for local advantage. Sometimes they outmaneuvered each other; sometimes they cooperated.Gibraltar entered European politics in the Middle Ages, and became a symbol of the Atlantic Empire in the Early Modern period (the Pillars of Hercules of Emperor Charles V are featured on the Spanish flag to this day), but Pack’s study focuses on the nineteenth century. Europe’s new imperialism, Britannic naval supremacy, the age of steam, the ever-present danger of cholera, all mark the change of a Spanish-Moorish border into a multilateral one. So too does the multicultural mix of Europeans and North Africans, Muslims, Jews, Catholics, and Protestants who brought a spirit of convivencia (mutual toleration) into the region, unlike the nineteenth- and twentieth- century homogenizing nationalism that was at play elsewhere.In the middle of this theater, Dr. Pack follows the careers of adventuresome entrepreneurs, who manipulated the weak enforcement of conflicting laws in overlapping jurisdictions for their own gain. He calls these characters “slipstream potentates” because they maneuvered creatively in the wakes of great ships of state on their courses in the seas of international politics. (Other historians have called them “the last Barbary pirates.”) They bring color and detail to this already gripping narrative of international politics in Spain and North Africa in the century between Napoleon and Franco.Sasha D. Pack is Associate Professor of History at the University of Buffalo. He studies Modern Europe, Spain and Portugal, and the Mediterranean, focusing on transnational and political history.Krzysztof Odyniec is a historian of the Early Modern Spanish Empire specializing in culture, diplomacy, and travel. He completed his PhD in 2017 at UC Berkeley where he is now a Visiting Scholar and a Fellow in the Berkeley Connect in History program. Learn more about your ad choices. Visit megaphone.fm/adchoices