This book examines the complex and often contradictory role of William Lyon Mackenzie King during Canada's involvement in World War I and World War II. Tim Cook, a renowned historian and curator at the Canadian War Museum, draws on extensive archival research to present a nuanced portrait of King's leadership. The book explores how King navigated domestic political challenges, managed Canada's war effort, and shaped the nation's identity on the global stage, challenging simplistic narratives of his wartime premiership.

Tim Cook's "Warlords" is recognized for its meticulous research and insightful analysis of William Lyon Mackenzie King's wartime leadership. Critics have praised Cook's ability to synthesize vast amounts of archival material, particularly King's diaries, to offer a comprehensive and often surprising portrayal of the prime minister. The book challenges traditional interpretations, presenting King not as a passive observer but as a complex figure who actively shaped Canada's destiny through two world wars. It is considered an essential read for understanding Canadian history and political leadership during pivotal global events.