The book that topped the Sunday Times bestseller list presents a revolutionary history of the alliance that triumphed in the war and shaped peace, written by the author of the acclaimed work “Humanizing Hitler”.

"An astonishing achievement. Remarkably narrated, highly comprehensive, and utterly captivating" - James Holland

"The best book I've ever read about World War II politics" - Tim Shipman

After France's fall in June 1940, only Britain stood between Hitler and total victory. Desperate for allies, Winston Churchill did everything possible to bring the United States into the conflict, to separate the Soviet Union from Nazi Germany, and to persuade neutral countries to resist German dominance.

By 1942, after the German invasion of Russia and the Japanese attack on Pearl Harbor, the British-Soviet-American alliance had been established. However, it was an unlikely and strange alliance, divided by ideologies and politics, full of distrust and deception. Churchill, Roosevelt, and Stalin were collaborators in the fight against Hitler, but at the same time, they were opponents with disagreements over strategy, colonialism, and the future of liberated Europe.

“Allies at War” is a fast-paced, narrative history based on material from over a hundred archives. Using vivid, first-hand testimonies and unpublished diary entries, we are taken into the decision-making rooms, revealing the political drama behind military developments.

Ambitious and exciting, “Allies at War” offers a completely new perspective on World War II and the origins of the Cold War.

"Thoroughly researched, well-written, and convincingly argued" - The Times

"Amazing ... Bouvet is a historian with an excellent understanding of the subject" - Daily Mail

"A new star is born ... Strong and well-researched" - Independent