“We know China is working across the U.N. system to drive an authoritarian agenda that stands in opposition to the founding values of the institution - American values.”

American diplomat

Linda Thomas-Greenfield is an American diplomat. She served as the 31st United States ambassador to the United Nations from 2021 to 2025 under President Joe Biden, and earlier was the 18th assistant secretary of state for African affairs from 2013 to 2017. After leaving government service, she worked in the private sector as a senior vice president at the business strategy firm Albright Stonebridge Group in Washington, D.C. Her career has centered on diplomacy and international affairs, especially U.S. policy toward Africa and work at the United Nations.