- Ambassador Michael R. Carpenter
- Deputy Chief of Mission Katherine Brucker
- Key Officers
- Public Diplomacy Section
- Former Ambassadors

Katherine Brucker is the Deputy Chief of Mission at the U.S. Mission to the OSCE. She is a career member of the Senior Foreign Service. Her assignments include both bilateral and multilateral work as well as extensive experience on the Secretary of State’s staff.
Ms. Brucker began her career in 1994 as an Economic Officer in Port-au-Prince, Haiti working on economic development in a post-conflict society. She served in Bonn (1996-1998) as a Consular Officer and then the Ambassador’s Staff Assistant. From 1998 to 2000 she worked in the Executive Secretariat, supporting the Secretary of State’s foreign travel to some thirty countries.
Following a year of economic training in Washington (2000-2001), Ms. Brucker joined the U.S. Mission to the Organization for Security and Cooperation in Europe (OSCE) in Vienna. There she worked on Good Governance, Counter Terrorism. and Balkan and Central Asian issues. Key achievements include winning agreement from all 55 OSCE participating States for action on terrorist financing and enhanced travel document security. Ms. Brucker led the Political, Economic and Commercial Section at Embassy Yaoundé (Cameroon) from 2005 to 2007. She then spent a year as a senior watch officer in the State Department’s Operations Center.
She served as Principal Officer at the Consulate General in Leipzig, Germany (2008-2011), the only U.S. diplomatic mission in the former East Germany. She returned to Washington in July 2011 to attend the Industrial College of the Armed Forces, earning a Master of Science in National Resource Strategy (Distinguished Graduate). She then spent two years as a Special Assistant to the Under Secretary for Economic Growth, Energy, and the Environment, where she concentrated on commercial advocacy. From 2014 to 2017 she served as Deputy Chief of Mission in Libreville, Gabon.
In August 2017 she became Chargé d’Affaires, a.i., in Abidjan, Côte d’Ivoire, a position she held for two years until the arrival of an Ambassador. She then served as Deputy Chief of Mission in Ottawa, Canada (2020-2023).
Ms. Brucker is a graduate of Tulane University of Louisiana (BA in History and French) and of Thunderbird (American Graduate School of International Management), Phoenix, AZ (Master’s in International Management). Her undergraduate education included two semesters at the Sorbonne.
Ms. Brucker’s passions are choral singing and cycling. She has sung with choirs in Washington, Bonn, Vienna, Leipzig and Abidjan. She discovered touring cycling in Vienna, and enjoys exploring Europe along the Danube, Inn, Isar, Elbe, Rhine, or the former East-West German border.