The mission of American public diplomacy is to support the achievement of U.S. foreign policy goals and objectives, advance national interests, and enhance national security by informing and influencing foreign publics and by expanding and strengthening the relationship between the people and Government of the United States and citizens of the rest of the world.

The Under Secretary for Public Diplomacy and Public Affairs Richard Stengel leads America's public diplomacy outreach, which includes communications with international audiences, cultural programming, academic grants, educational exchanges, international visitor programs, and U.S. Government efforts to confront ideological support for terrorism. The Under Secretary oversees the bureaus of Educational and Cultural Affairs, Public Affairs, and International Information Programs, as well as the Center for Strategic Counterterrorism Communications, and participates in foreign policy development.