The Department of State maintains the U.S. diplomatic presence around the world, conducting foreign relations and using an on-the-ground perspective to generate country-specific knowledge. As head of the department, the secretary draws on this knowledge to present an authoritative view of the United States’ bilateral relationships, the relationships between foreign countries, and the behavior and interests of foreign governments.

The secretary of state’s goals are to

- serve as the president’s principal foreign policy advisor; and
- analyze how policy options will affect the interests, reputation, and relationships of the United States.