William Anthony Kirsopp Lake (born April 2, 1939) was the Executive Director of the United Nations International Children's Fund (UNICEF), author, academic, and former American diplomat, Foreign Service Officer, and political advisor. He has been a foreign policy advisor to many Democratic U.S. presidents and presidential candidates, and served as National Security Advisor under U.S. President Bill Clinton from 1993 to 1997. Lake is credited as being one of the individuals who developed the policy that led to the resolution of the Bosnian War. He also held the chair of Distinguished Professor in the Practice of Diplomacy at the Edmund A. Walsh School of Foreign Service at Georgetown University, in Washington, D.C. ...more on Wikipedia