High Quality Content by WIKIPEDIA articles! The United Nations Office for the Coordination of Humanitarian Affairs (UNOCHA) French: Le Bureau de la coordination des affaires humanitaires, is a United Nations body formed in December 1991 by General Assembly Resolution 46/182. The resolution was designed to strengthen the UN`s response to complex emergencies and natural disasters by creating the Department of Humanitarian Affairs (DHA), and replacing the Office of the United Nations Disaster Relief Coordinator, which had been formed in 1972. In 1998, due to reorganisation, DHA merged into the OCHA and was designed to be the UN focal point on major disasters. Its mandate was also expanded to include the coordination of humanitarian response, policy development and humanitarian advocacy. It is a sitting observer of the United Nations Development Group.