This is a new edition of this publication which describes the structure and activities of the United Nations and its organisations, and looks at its work under the headings of: international peace and security; economic and social development; human rights; humanitarian action; international law; and decolonisation. It also includes details of UN websites, UN member states, past and present peacekeeping operations and UN special observances, as well as giving contact details for UN information centres, services and offices. The data are current as of December 2003, unless otherwise stated.