An estimated 30,000 people have been reportedly displaced following violent clashes by armed groups in the Greater Pibor Administrative Area of South Sudan. Both the country's humanitarian community and the international community are calling for an immediate cessation of hostilities. The United Nations Office for the Coordination of Humanitarian Affairs (OCHA) says in a statement released today that on 24 December armed young men from Jonglei State attacked communities in parts of the Greater Pibor Area.