The previous system set up internationally to address the needs of IDPs was referred to as the collaborative approach as the responsibility for protecting and assisting IDPs was shared among the UN agencies, i.e. UNHCR, Unicef, WFP, UNDP, Office of the High Commissioner for Human Rights, the International Organization for Migration IOM, the ICRC and International NGOs. Coordination is the responsibility of the UN Emergency Relief Coordinator and the Humanitarian Coordinator in the country concerned. They are assisted by the Inter-Agency Displacement Division, which was created in 2004 and is housed in the UN Office for the Coordination of Humanitarian Affairs (OCHA).