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The following Speakers Biographies are examples of the types of speakers available and their backgrounds. Please note: this is just a sample of some of our speakers; there are many more available on a range of topics.  Speakers are usually chosen for a briefing based on the topic requested and their availability.



Nikolai Galkin
Senior Political Affairs Officer and Team Leader in the Security Council Secretariat Branch within the Department of Political Affairs (DPA)
Topics: Political Affairs
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Mr. Galkin joined the United Nations in New York in 1990. He served in Iraq tracking humanitarian deliveries with the Multidisciplinary Observation Unit of the Humanitarian Coordinator’s Office and as an Electoral Operations Officer with the Independent Electoral Commission of Iraq.

Other field assignments included organizing elections in East Timor. His most recent field assignment was in Syria. Mr. Galkin is a Russian Federation national and he studied political science and sociology at Moscow State University. After graduation, he worked at the Academy of Sciences, in the private sector and as freelance journalist.

Pingfan Hong (洪平凡)
Chief of Global Economic Monitoring Unit and Acting Director of Development Policy and Analysis Division, Department of Economic and Social Affairs (DESA)
Topics: World Economics, Development and Policies
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A Chinese national, Dr. Pingfan Hong (洪平凡) focuses on economic research and policy analysis. He has contributed to the publication of the United Nations World Economic and Social Survey (WESS) and World Economic Situation and Prospects (WESP). Dr. Hong has also worked as an Officer in the State Planning Commission of China.


Dr. Hong earned a Ph.D. in Economics from the University of Pennsylvania, and a Dual Masters in Computer Sciences and Management Sciences from Shanghai Jiao Tong University. Dr. Hong is a World Bank McNamara Fellow of 1985.

Rébar Jaff
Public Information Officer
Topics: International Affairs, Conflict Resolution and Civil Society Development
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Mr. Jaff currently serves as a Public Information Officer in the Office of the Spokesperson of the Office for the Coordination of Humanitarian Affairs (OCHA) of the United Nations Secretariat. Mr. Jaff joined OCHA in January 2016. He has since then been deployed on a number of occasions to support OCHA's international humanitarian response in conflict and natural disasters. Prior to this position, Mr. Jaff worked as the Youth Programme Manager for the United Nations Population fund (UNFPA) in 2010 and earned the title of Political Affairs Officer from 2011-2014 with the United Nations Assistance Mission for Iraq (UNAMI). 

Mr. Jaff's most recent deployments were in the capacity of Public Information Officer to Haiti in response to Hurricane Matthew, as well as in the capacity of UNOCHA's Acting Head of Office in Kirkuk and Reporting Officer in Erbil to respond to the ISIL crisis in Iraq. 

Matthias Klettermayer
Public Information Officer in the Division for Sustainable Development, UN Department of Economic and Social Affairs (DESA)
Topics: Sustainable Development, Sustainable Development Goals
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Matthias Klettermayer is a Public Information Officer in the Division for Sustainable Development, UN Department of Economic and Social Affairs.  He regularly gives presentations on sustainable development issues.  Mr. Klettermayer is lead author of the Division's monthly newsletter 'Sustainable Development in Action' and is involved in the Division's social media outreach via Twitter (@SustDev ) and Facebook ( ).

He has a Master’s degree in Communications Science from the University of Vienna, Austria.


Donald Lee
President, International Committee for October 17th (former Chief, Social Perspectives on Development Branch, UN DESA, New York)
Topics: SDGs, Social Development, Sustainable Development and Environment, Poverty and Human Rights
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Mr. Lee began his career at the United Nations with the Economic and Social Commission for Asia and the Pacific (ESCAP) in Bangkok, Thailand. He helped establish the Youth Employment Network in 2001 and was – until his retirement – a member of its Steering Committee.

In 2008, he was appointed to the International Committee for October 17th which promotes and supports the International Day for the Eradication of Poverty. Mr. Lee is an advocate for human rights, poverty eradication, social justice and environmental protection through his research, publications and blog. He has a PhD in Economics from University College London.


Kimberly Mann
Chief, Education Outreach Section, Outreach Division, UN Department of Public Information (DPI)
Topics: Holocaust, Transatlantic Slave Trade
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Kimberly Mann is the Chief of the Education Outreach Section in the Department of Public Information which includes the Holocaust Programme, The Remember Slavery Programme and the Model UN Programme. Since joining the UN in 1993, Ms. Mann has held several positions including Manager of the Holocaust and Messengers of Peace Programmes, and Desk Officer for the UN Information Centres in Africa.

Prior to her UN employment, Ms Mann worked for various public relations firms and non-profit entities and was a teacher. She holds a Bachelor of Arts Degree in history and a Master of Arts Degree in linguistics from the University of South Carolina.