Mark Kroeker served as the civilian police adviser in the United Nations' Department of Peacekeeping Operations, the top policing post in the U.N.  His other U.N. posts included that of police commissioner for the U.N.'s mission in Liberia and deputy commissioner of operations for the U.N. International Police Task Force in Bosnia and Herzegovina.  He was also chief of police in Portland, Oregon, and consulted for the U.S. Department of Justice in Haiti.  He was also a member of U.S. police development projects in Rwanda and Burundi.  He came to international policing after a 32-year career with the police department of Los Angeles, California.
 

At the time of this interview, William G. O’Neill was a lawyer specializing in international human rights, humanitarian and refugee law. He was senior adviser on human rights in the United Nations Mission in Kosovo, chief of the U.N. Human Rights Field Operation in Rwanda and head of the legal department of the U.N./OAS Mission in Haiti. He worked on judicial, police and prison reform in Burundi, Liberia, Sierra Leone, South Sudan, Timor Leste, Nepal and Bosnia-Herzegovina. He investigated mass killings in Afghanistan for the Office of the High Commissioner for Human Rights. He also conducted an assessment of the human rights situation in Darfur and trained the U.N.’s human rights monitors stationed there. O’Neill has published widely on the rule of law, human rights and peacekeeping. In 2008, the Social Science Research Council appointed him as director of its Conflict Prevention and Peace Forum. 

Graham Muir was the commissioner of the United Nations Police as part of the U.N. Stabilization Mission in Haiti from 2005 to 2006.  At the time of the interview, he had served 32 years in the Royal Canadian Mounted Police.  Prior to his service in Haiti, Muir served as the director of general learning and development for the RCMP.  He first became involved in international police work in 1993 as a part of the U.N. Protection Force in the former Yugoslavia.  Between 1993 and 2005 Muir was heavily involved with the training of RCMP members for U.N. police service.  He also had been involved with the Pearson Peace Keeping Center for a number of years at the time of the interview.