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Ambassador Michele J. Sison was sworn in as Assistant Secretary of State for International Organization Affairs on December 21, 2021. She served as U.S. Ambassador to Haiti from February 2018 to October 2021, and as U.S. Deputy Representative to the United Nations 2014-2018, where she helped build global coalitions to counter transnational threats to peace and security and advocated for a more effective, efficient, and accountable UN and multilateral system. Ambassador Sison has long experience with UN peacekeeping and the UN entities responsible for development, humanitarian relief, and human rights. Ambassador Sison served as U.S. Ambassador to Sri Lanka and Maldives (2012-2014), U.S. Ambassador to Lebanon (2008-2010), and U.S. Ambassador to the United Arab Emirates (2004-2008).

Ambassador Sison’s diplomatic assignments also include Assistant Chief of Mission in Baghdad, Iraq; Principal Deputy Assistant Secretary of State for South Asian Affairs; Deputy Chief of Mission in Islamabad, Pakistan; Consul General in Chennai, India; and tours in Côte d’Ivoire, Cameroon, Benin, and Togo. She also served as the State Department’s Director of Career Development and Assignments. Ambassador Sison is the recipient of the U.S. Presidential Distinguished Service Award, U.S. Presidential Meritorious Service Award, and the U.S. Department of the Army’s Outstanding Civilian Service Medal. She holds numerous U.S. Department of State awards, including Ambassadorial-level awards for her contributions to counter-proliferation and combatting trafficking in persons. Ambassador Sison holds the rank of Career Ambassador, the highest rank in the U.S. Foreign Service.

U.S. Department of State

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