The Representation and Liaison Unit of the Office for Inter-Agency Affairs and Coordination organized United Nations participation at international meetings and was responsible for liaison at Headquarters with the Division of Narcotic Drugs (located in Geneva), the United Nations Fund for Drug Abuse Control (located in Geneva), and the International Narcotics Control Board. It also liaised with: other UN programs; specialized agencies; and non-governmental organizations (NGOs). Alexander Messing-Mierzejewski served as Chief of the Representation Unit.