Stephen D. Mull

Background

Stephen D. Mull was born on April 30, 1958, in Reading, Pennsylvania, United States. His career connected an American upbringing with extensive diplomatic service in Europe, southern Africa, Southeast Asia, and Washington, D.C.

Mull joined the United States Foreign Service in March 1982. His professional life subsequently combined overseas representation, political reporting, crisis management, executive coordination, and senior policy work in the Department of State.

Education

Mull graduated from Georgetown University in 1980 with a Bachelor of Science degree in International Politics through the School of Foreign Service. Georgetown, founded in 1789, is a Jesuit university in Washington, D.C., and its School of Foreign Service has long specialized in international affairs, diplomacy, and public service.

His education preceded a Foreign Service career that required work across diplomatic missions, regional bureaus, and national-security institutions. The Washington location of Georgetown placed his studies near the federal institutions in which he later served, although his subsequent professional assignments took him to several continents.

Career

Mull joined the United States Foreign Service in March 1982 and served in diplomatic assignments in Poland, South Africa, and the Bahamas. His overseas work included political and consular responsibilities, while his Washington assignments included Deputy Director of the State Department Operations Center, Director of the Office of Southern European Affairs, Deputy Executive Secretary, and Senior Advisor to the Under Secretary of State for Political Affairs. The Foreign Service is the professional diplomatic corps of the United States, and the State Department's Operations Center functions as a continuous crisis-monitoring and communications hub for senior officials.

From 2000 to 2003, Mull was Deputy Chief of Mission at the U.S. Embassy in Jakarta, Indonesia. He was nominated by President George W. Bush to become U.S. Ambassador to Lithuania on March 10, 2003, was confirmed by the Senate, and served from August 26, 2003, to 2006. The embassy in Vilnius represented the United States in a Baltic state that had restored independence from the Soviet Union and joined NATO and the European Union during the period of his ambassadorship.

Mull served as Acting Assistant Secretary of State for Political-Military Affairs from January 2007 to August 2008. He later became Senior Advisor to Under Secretary of State for Political Affairs William Burns, Executive Secretary of the Department of State from 2009 to 2012, and U.S. Ambassador to Poland from 2012 to 2015. As Executive Secretary, he coordinated support for the Secretary of State and managed responses to a wide range of crises; as ambassador, he represented the United States in a NATO ally with deep historical and security ties to Washington.

In September 2015, Secretary of State John Kerry appointed Mull Lead Coordinator for Iran Nuclear Implementation. He led interagency efforts to implement the Joint Comprehensive Plan of Action, including coordination on nuclear steps, sanctions, verification, and consultations with international partners. Mull testified before congressional committees in 2016 about implementation of the agreement and the role of the International Atomic Energy Agency.

In 2018, Mull served as Acting Under Secretary of State for Political Affairs, overseeing regional and bilateral policy bureaus. He joined the University of Virginia as Vice Provost for Global Affairs in August 2018; the university's global-affairs office develops international partnerships, education-abroad opportunities, and globally focused research collaborations. In 2024, Secretary of State Antony Blinken selected him to coordinate the Department of State's transition between the Biden administration and the incoming Trump administration. As Vice Provost, Mull continues to oversee the University of Virginia's international relationships and activities.

Achievements

• Mull led the United States interagency effort to implement the Joint Comprehensive Plan of Action on Iran's nuclear program, coordinating diplomatic, sanctions, verification, and security-related work across multiple federal departments.

• Mull served as Acting Under Secretary of State for Political Affairs, overseeing the Department of State's regional and bilateral policy bureaus.

• Mull coordinated the Department of State's 2024 presidential transition between the Biden administration and the incoming Trump administration.

Politics

Mull's public career has been nonpartisan and centered on the United States Foreign Service and executive-branch diplomatic appointments rather than elected party politics. His assignments included ambassadorships, senior State Department leadership, and coordination of American policy toward Iran's nuclear program.

His diplomatic work developed within the post-Cold War foreign-policy environment, in which the United States combined bilateral alliances, multilateral institutions, crisis management, sanctions, arms-control diplomacy, and international security cooperation. As Lead Coordinator for Iran Nuclear Implementation, Mull directed interagency efforts to implement and verify the Joint Comprehensive Plan of Action, working with the Departments of State, Energy, Treasury, Commerce, and other agencies.

Personality

Quotes from others about the person

• Secretary of State John Kerry described Mull as the appropriate leader for the interagency effort to implement the Joint Comprehensive Plan of Action, citing his experience in government service, Iran-related diplomacy, and coordination across agencies.

Connections

Mull is married to Cheryl Stephan. They have one child, Ryan Mull.

child:

Ryan Mull

Wife:

Cheryl Stephan

References

• U.S. Department of State biography of Stephen D. Mull Documents Mull's Foreign Service career, ambassadorships, senior State Department positions, awards, and appointment as Lead Coordinator for Iran Nuclear Implementation.
• Appointment of Ambassador Stephen D. Mull as Lead Coordinator for Iran Nuclear Implementation Secretary of State John Kerry's announcement describing Mull's appointment and responsibilities for implementing the Joint Comprehensive Plan of Action.
  2015
• Stephen D. Mull — University of Virginia Office of the Executive Vice President and Provost Documents Mull's position as Vice Provost for Global Affairs, his diplomatic career, awards, Career Ambassador rank, and responsibilities at the University of Virginia.
• UVA's Stephen Mull To Lead State Department's Presidential Transition Documents Mull's selection to coordinate the Department of State's transition between the Biden administration and the incoming Trump administration.
  2024
• Testimony of Ambassador Stephen D. Mull before the House Committee on Foreign Affairs Provides Mull's congressional testimony concerning implementation of the Joint Comprehensive Plan of Action and the United States interagency effort supporting it.
  2016