The United Nations (UN) is an intergovernmental organization established after World War Two in 1945 to promote international co-operation and maintain international security.
The UN has 193 members and its headquarters are in New York City. Its objectives also include promoting human rights, fostering social and economic development, protecting the environment, and humanitarian aid. It is financed through contributions from its member states.
South Sudan's civil war has forced over 1 million children to flee the country while another million are internally displaced, UN agencies say. Officials have warned that the future of an entire generation is at risk.