South Sudan (Listeni/ˌsaʊθ suːˈdæn/ or /suːˈdɑːn/), officially the Republic of South Sudan and previously known as Southern Sudan, is a landlocked country in east-central Africa that is part of the United Nations subregion of Eastern Africa. Its current capital is Juba, which is also its largest city. The capital city is planned to be changed to the more centrally located Ramciel in the future. South Sudan is bordered by Ethiopia to the east, Kenya to the southeast, Uganda to the south, the Democratic Republic of the Congo to the southwest, the Central African Republic to the west and the Republic of Sudan to the north. It includes the vast swamp region of the Sudd, formed by the White Nile and known locally as the Bahr al Jabal.