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What is the mission of the U.S. Department of State?

the exterior of a congrete building with small square windows and a security camera. In the foreground, a sign that says "Department of State"
The Harry S Truman Building, Department of State headquarters in Washington D.C. (© AP Photo/J. Scott Applewhite)

The Department of State is the United States government’s oldest cabinet-level federal agency. The mission of the Department of State is to represent America’s foreign policy abroad, and to advance the interests and security of the American people.

The Department of State leads America’s foreign policy through diplomacy, advocacy, and assistance by advancing the interests of the American people, their safety and economic prosperity.

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