This study reconsiders the 1967 Russell Tribunal through the lens of U.S. media. Scholars who study the Tribunal are often left apologizing for its lack of impact on public discourse. But a close look at news coverage, primary Tribunal literature, and members’ correspondence reveals many ways that it affected debates about the war in the USA. These connections made the Tribunal a transatlantic component in the Vietnam era anti-war movement as much as an experiment in international law.