Robert Jervis (1940–2021) was a titan in the field of international relations. Part political scientist, part psychologist, part historian, and part policy analyst, he drew on a vast array of theoretical approaches and empirical methods to develop keen and distinctive insights on a wide range of topics. From academic political science to the policy world, the scope of Jervis’s influence is astonishing. Bringing together top scholars in political science, international relations, and history, this book offers a deep dive into Jervis’s pathbreaking scholarship and its legacy across disciplines. The authors consider how his work reshaped subjects such as nuclear strategy, arms control, deterrence theory, structural realism, diplomatic history, intelligence analysis, and the causes of war. They further discuss Jervis’s leadership on the CIA’s declassification board, which provided a bridge between academics and the intelligence community, and his influence as a public intellectual. The contributors also pay tribute to Jervis as a mentor, colleague, and friend who worked to build and sustain a broad intellectual community. Offering a wide-ranging overview of Jervis’s most important contributions to many fields, this book provides a deep understanding of Jervis’s scholarly work, which continues to inspire new generations of scholars who seek to follow in his footsteps.