PERSON: Karen Pierce

UK Ministry of Foreign Affairs

COO of the Foreign, Commonwealth and Development Office

Dame Karen Elizabeth Pierce, Lady Roxburgh, DCMG (born 23 September 1959), is a British diplomat who served as British Ambassador to the United States from March 2020 to February 2025.

She was previously the Permanent Representative of the United Kingdom to the United Nations from 2018 to 2020 and the British Ambassador to Afghanistan from 2015 to 2016. She was the first woman appointed to the United States and United Nations roles, and the second in the Afghanistan role.

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