This working paper is a case study on South Sudan as an important refugee country of origin. The case study looks at issues of forced displacement in South Sudan and underscores the linkages between internally displaced persons and South Sudanese refugees. The case study highlights the importance of under­standing local contexts and root drivers of conflict and displacement. It reviews evaluations of programmes in South Sudan, including past efforts at state building and refugee resettlement to look at learning within the international community. The study was undertaken as part of a wider research project on learning from evaluations to improve responses to situations of forced displacement .