Tom Casey is a U.S. diplomat. He was the Deputy Spokesman and Deputy Assistant Secretary for Public Affairs at the United States Department of State, a position to which he was appointed on 3 July 2006. Immediately prior to this assignment, he served as Director of the Office of Press Relations.
Casey joined the Foreign Service in 1988 and was first posted to the U.S. Embassy in Caracas, Venezuela. He has served overseas in public affairs positions at the U.S. embassies in Lagos, Nigeria, and Lima, Peru, as well as at the U.S. Mission to NATO in Brussels, Belgium.
In Washington, D.C., Casey has worked as a public affairs advisor for the Bureau of Western Hemisphere Affairs, and in a number of positions dealing with NATO and European Union issues in the Bureau of European and Eurasian Affairs.
Prior to his entry into the Foreign Service, Casey worked as a management analyst at the United States Department of Justice. A native of the state of New Jersey, he holds a Bachelor of Arts in political science from Tufts University, and a Master of Arts in Law and Diplomacy from the Fletcher School of Law and Diplomacy.
Robert Nicholas Burns is an American diplomat and academic who is the 13th and current United States Ambassador to China since 2022. Burns is a professor of diplomacy and international politics at the John F. Kennedy School of Government at Harvard University and a member of the Board of Directors of the school's Belfer Center for Science and International Affairs. He is director of the Aspen Strategy Group, senior counselor at The Cohen Group, and serves on the board of directors of Entegris, Inc.
Charles Anthony “Tony” Gillespie Jr. was a United States career diplomat who helped to open the first United States Embassy in Grenada. He later served as the United States Ambassador to Colombia and the United States Ambassador to Chile.
Richard Eugene Hoagland is a career ambassador in the United States Department of State. He was Principal Deputy Assistant Secretary in State's Bureau of South and Central Asian Affairs, 2013-2015. In the summer of 2016, based at the U.S. Embassy in Amman, Jordan, he was the senior U.S. liaison to the Russian Reconciliation Center at the Russian military base in Latakia, Syria. In 2017 he served as interim U.S. co-chair of the OSCE Minsk Group, the group appointed by the Organization for Security and Cooperation in Europe to coordinate international peacemaking efforts on the conflict in Nagorno-Karabakh.
James Blair Cunningham is an American diplomat who served as the United States Ambassador to Afghanistan. Cunningham has served in various diplomatic positions, including Chief of Staff to NATO Secretary General Manfred Woerner (1989–1990), Deputy Advisor for Political Affairs at the United States Mission to the United Nations (1990–1992), Director of the State Department's Office of European Security and Political Affairs (1993-1995), Deputy Chief of Mission, Embassy of the United States in Rome (1996–2001), Acting United States Ambassador to the United Nations (2001), Consul General of the United States to Hong Kong and Macau (2005-2008) and the United States Ambassador to Israel (2008–2011).
Mary Thompson-Jones is a retired senior Foreign Service Officer in the United States' Department of State. In July 2016, she published her first book, To The Secretary: Leaked Embassy Cables and America's Foreign Policy Disconnect.
James Franklin Collins is a former United States Ambassador to Russia. A career Foreign Service Officer in the State Department, he is a Russian specialist.
W. Robert Pearson is a former Foreign Service Officer who served as United States Ambassador to Turkey (2000–2003) and later as Director of Human Resources in the Foreign Service until his retirement in 2006. He became the fourth President of the nonprofit International Research & Exchanges Board (IREX) in November 2008.
A career Foreign Service Officer, Paul E. Simons served as the Ambassador Extraordinary and Plenipotentiary of the United States to Chile from 2007 to 2010.
Roman Popadiuk is an American diplomat of Ukrainian descent. Popadiuk served as the first United States Ambassador to Ukraine under George H.W. Bush, from 1992 to 1993. From 2015 until 2017 he was a principal at Morgan, Lewis & Bockius LLP's subsidiary Morgan Lewis Consulting, and prior to 2015 he was the principal at Bingham Consulting. Since late 2018 Popadiuk has been the president of the Diplomacy Center Foundation which oversees the development of the National Museum of American Diplomacy.
James Warlick is a US diplomat, former United States Ambassador to Bulgaria.
Mary Burce Warlick is a Papua New Guinean-born, American diplomat who was appointed Deputy Executive Director of the International Energy Agency in May 2021. A former United States career diplomat, she served as the United States Ambassador to Serbia from January 2010 to September 2012, as the U.S. Consul General in Melbourne, Australia from October 2012 to July 2014, as Principal Deputy Assistant Secretary in the Bureau of Energy Resources at the Department of State from August 2014 to September 2017, and as Acting Special Envoy and Coordinator for International Energy Affairs from January to September 2017.
Scot Alan Marciel is an American diplomat and served as Principal Deputy Assistant Secretary in the Bureau of East Asian and Pacific Affairs until February 2016. He was confirmed by the U.S. Senate to be the United States Ambassador to Burma on January 28, 2016.
Glyn Townsend Davies is a career member of the U.S. Senior Foreign Service. On August 5, 2015, the U.S. Senate confirmed Davies to be Ambassador to the Kingdom of Thailand. His diplomatic career began in 1980. He has served in three ambassadorial-level assignments since 2003, most recently as Special Representative of the U.S. Secretary of State for North Korea Policy.
Maureen Elizabeth Cormack is an American diplomat who served as the United States Ambassador to Bosnia and Herzegovina from 2015 to 2019. She served as acting Assistant Secretary of State for European and Eurasian Affairs from August to September 2021.
Martin Dahinden is a Swiss diplomat who has served as ambassador of Switzerland to the United States of America from 2014 to 2019. Dahinden presented his credentials to the President of the United States of America, Barack Obama, on November 18, 2014 at the White House in Washington, D.C. He retired in 2019.
D. Brent Hardt is an American career Senior Foreign Service Officer and present Consul General at the U.S. Consulate in Vancouver, B.C., Canada who served in the Western Hemisphere, Europe, and in Political-Military assignments. From 2011-2014 he served as U.S. Ambassador Extraordinary and Plenipotentiary to the Cooperative Republic of Guyana and Plenipotentiary Representative of the United States to the Caribbean Community (CARICOM). He most recently served as Chargé d'Affaires ad interim at the U.S. Embassy in Paris, France beginning in August 2017. Prior to his arrival in Paris, he served as Foreign Policy Advisor to the Commander of U.S. Central Command and as Foreign Policy Advisor to the Commander of U.S. Special Operations Command. Other assignments include service as Chargé d’Affaires at the U.S. Embassy to Barbados and the Eastern Caribbean from 2009-2011, and Deputy Chief of Mission and Chargé d’Affaires at U.S. Embassies in The Bahamas (2005-2008) and the Holy See in Rome (2002-2005).
James Desmond Melville Jr. is an American diplomat who has served as the United States Ambassador to Estonia from December 2015 to June 29, 2018, when he resigned as Ambassador, effective on July 29, 2018.
Susan Nan Stevenson is an American diplomat and career member of the Senior Foreign Service who has served as Principal Deputy Assistant Secretary in the Bureau of Intelligence and Research since 2021. She previously served as the United States ambassador to Equatorial Guinea from 2019 to 2021.
Wayne J. Bush is an American diplomat who was Assistant Secretary General for Executive Management at NATO in 2013.
Julie D. Fisher is an American diplomat who has served as the United States Ambassador to Belarus since 2020. Following confirmation by the Senate, Julie Fisher was sworn in as the first U.S. Ambassador to Belarus since 2008 on December 23, 2020. She previously served as a Deputy Assistant Secretary of State.