SENTRY is a publication focused on strategic deterrence, defense, and international security. Its coverage examines developments affecting the United States, its Allies, and partners, with particular attention to European security, Indo-Pacific stability, integrated operations, strategic forces, and weapons modernization. Readers can find reporting and analysis on military exercises, defense cooperation, emerging technologies, missile programs, alliances, and efforts to strengthen deterrence.

The publication offers a mix of timely news, feature articles, and perspectives from contributors and senior leaders. Its departments include Future Force, Allies & Partners, Strategic Perspectives, and Key Leader Profile, alongside coverage of current issues and an archive of past magazine content. Topics range from new defense systems and uncrewed technologies to alliance relationships and strategic cooperation.

SENTRY also provides access to its latest issue and magazine archive, and invites readers to subscribe. Its website presents content in English, Japanese, Korean, and Russian, serving an international audience interested in defense policy and the changing security environment.