About
Linda Thomas-Greenfield is an American diplomat who served as the 31st United States Ambassador to the United Nations under President Joe Biden. Prior to this role, she served as the U.S. Assistant Secretary of State for African Affairs from 2013 to 2017. Throughout her career, Thomas-Greenfield has held numerous positions in the Foreign Service, with a focus on African affairs. Her extensive experience in diplomacy has made her a prominent figure in international relations.
Career Timeline
Joins Foreign Service
Linda Thomas-Greenfield begins her career in the U.S. Foreign Service, setting the stage for a long career in diplomacy.
Principal Deputy Assistant Secretary
Serves as Principal Deputy Assistant Secretary, Bureau of Population, Refugees, and Migration, increasing her influence in foreign policy.
Ambassador to Liberia
Appointed as U.S. Ambassador to Liberia, marking a significant milestone in her diplomatic career.
Assistant Secretary of State
Confirmed as Assistant Secretary of State for African Affairs, playing a key role in shaping U.S. policy towards Africa.
Leaves Public Service
Departs from government service after serving as Assistant Secretary of State, transitioning to the private sector.
UN Ambassador Appointment
Nominated and confirmed as the U.S. Ambassador to the United Nations by President Joe Biden, returning to public service.
Continues UN Ambassadorship
Continues to serve as U.S. Ambassador to the United Nations, playing a key role in international diplomacy and global affairs.
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Last updated: February 24, 2026