Linda Thomas Greenfield

Linda Thomas Greenfield

United States Ambassador to the United Nations, Linda Thomas-Greenfield reads a statement during a meeting of the United Nations Security Council about the maintenance of peace and security of Ukraine, at the UN headquarters in New York City, US, July 29, 2022. REUTERS/Jeenah Moon

As US defends Ukraine at UN, China warns against challenge over Taiwan

FILE PHOTO: Linda Thomas-Greenfield, US President-elect Joe Biden's choice to become the next US ambassador to the United Nations, speaks as President-elect Biden announces his national security nominees and appointees at his transition headquarters in Wilmington, Delaware, US, November 24, 2020. REUTERS/Joshua Roberts/File Photo

Biden's UN pick to warn that US absence allows China to thrive at world body