This book argues that the origins of the Anglosphere are racial. Drawing on theories of collective identity-formation and framing, the book develops a new framework for analyzing foreign policy, which it then evaluates in case studies related to fin-de-siècle imperialism (1894-1903), the ill-fated Pacific Pact (1950-1), the Suez crisis (1956), the Vietnam escalation (1964-5), and the run-up to the Iraq war (2002-3). Each case study highlights the contestations over state and empire, race and nation, and liberal internationalism and anti-Americanism, taking into consideration how they shaped international conflict and cooperation. In reconstructing the history of the Anglosphere, the book engages directly with the most recent debates in international relations scholarship and American foreign policy