Matthew O’Brien has stepped into a new leadership role at the U.S. Department of State, serving as Deputy Assistant Director and Director of the Office of Protection within the Diplomatic Security ...

Diplomatic security staff whose usual job is protecting diplomats and keeping information safe have been authorized to investigate and apprehend illegal migrants under new Department of Homeland ...

Athletes and fans will start arriving at the 2026 Winter Olympics in Milan next month, but one U.S. agency has been on the ground working to ensure safety at the games. Special agents from the U.S.

The Diplomatic Security Service traditionally focused on protecting diplomats, helping secure overseas missions and managing background checks. Now it is doing beat-cop work. By Edward Wong Reporting ...