Resources Home Leadership Resources Remarks and Releases Assembly of Local Leaders State-to-States Initiative Contact Us HomeSubnational Diplomacy Unit...Resources – Special Representative for City and State Diplomacy hide Resources – Special Representative for City and State Diplomacy Department of State by State The State Department benefits the American people by advancing U.S. national security, promoting our economic interests, providing services and reaffirming our country’s exceptional role in the world. To learn more, view the Department of State by State Map. National Museum of American Diplomacy The National Museum of American Diplomacy (NMAD) tells the story of the history, practice, and challenges of American diplomacy. Through exhibitions and programs – including diplomacy simulations and educational videos – NMAD inspires the American public to discover diplomacy and how it impacts their lives every day. Visit the National Museum of American Diplomacy website.