Wartime in the 21st century

Wartime dominates the 21st century. The term is ubiquitous in contemporary politics, providing an intuitive trope for narrating foreign relations, grappling with intractable policy problems, and responding to shocking events. Such pervasion makes it easy to forget that wartime is a relatively recent political invention. It began as an instrumental and somewhat stylized concept that authorized exceptional violence by promising to contain it within strict temporal boundaries. Yet in the same era that wartime achieved international prominence, war itself became an increasingly ordinary and extended dimension of politics. Today, 'wartime' refers to a number of unconstrained and often self-perpetuating violent practices that have changed global politics and national security policies in deep and enduring ways - nowhere more so than in the United States. To introduce the special issue, this article presents wartime as a neglected and paradoxical topic at the heart of International Relations. It sketches the concept's historical emergence, from innovative Presidential discourse through expansion in World War II and the Cold War, to 21st century entrenchment in daily life and habits of foreign relations. We also make the case for why US wartime marks an especially apt example of a global phenomenon, and one worthy of increased scrutiny within International Relations. Finally, we provide synoptic summaries of the articles that comprise the special issue, showing how they work together to interrogate key aspects of 21st century wartime. We conclude with reflections on how the study of wartime may be extended to better understand its impact on historical and contemporary global politics.