Graeme Simpson is the Principal Representative of Interpeace New York & Senior Peacebuilding Adviser. He is also an Adjunct Lecturer in Law at Columbia University’s School of Law, where he has taught a Seminar on Transitional Justice for the past 17 years. He was co-founder of the Centre for the Study of Violence and Reconciliation, in Johannesburg, South Africa, and served as Executive Director from 1995 to 2005. Simpson worked extensively on issues related to transitional justice in South Africa, including on the Truth and Reconciliation Commission, and on the transformation of criminal justice institutions in South Africa. Simpson has also served as Director of Country Programs and then Director of Thematic Programs at the International Center for Transitional Justice, headquartered in New York City. In these roles he oversaw the organization’s global country and thematic programs on transitional justice. From 2016-2018, Simpson was appointed by the UN Secretary General as the Lead Author of the UN's independent Progress Study on Youth, Peace and Security (YPS): The Missing Peace. He serves on advisory Boards to several organizations and has been a member of the Editorial Board of the International Journal of Transitional Justice published by Oxford University Press, since its inception. He recently co-edited a Special Issue of the Journal on Youth and Transitional Justice. Simpson has published widely in books and journals covering an array of issues and has been centrally involved in national and international civil society organizations for over 35 years.