Ambassador Wendy Sherman

Hillary supporter.

Social worker became activist then high ranking State Department Official

Negotiated Iran and North Korea nuclear deals

One of fifteen on Hillary and Debbie Wasserman-Schultz's DNC platform committee

Wikipedia:

Wendy Ruth Sherman (born 1949) is Senior Counselor at Albright Stonebridge Group and also Senior Fellow at Harvard Kennedy School's Belfer Center for Science and International Affairs. She served as Under Secretary of State for Political Affairs, the fourth-ranking official in the U.S. Department of State, from September 2011 to October 2015. She has formerly worked as a social worker, the director of EMILY's list, the director of Maryland's office of child welfare, and the founding president of the Fannie Mae Foundation. During the Clinton Administration, she served as Counselor of the United States Department of State and Special Advisor to the President and Secretary of State and North Korea Policy Coordinator. In the latter role, she was instrumental in negotiations related to North Korea's nuclear weapon and ballistic missile programs. She was also the lead negotiator for the Iran nuclear deal.