This report assesses the extent to which the UN Mission in South Sudan (UNMISS) is achieving its current strategic objectives and what impact the Mission has had on the political and security situation in South Sudan. The report focuses on the most recent period of UNMISS’ mandate (2014-18), aiming to provide a “snapshot” of the mission’s work across its four main mandate areas: the protection of civilians (PoC), facilitation of humanitarian delivery, promotion of human rights, and support to the peace process. As a large, multidimensional peacekeeping operation – with 17,000 troops, 2,000 police and 2,000 civilians – UNMISS has been provided with significant resources and an extraor-dinarily ambitious mandate. Assessing the match between resources and mandate, and the ways the Mission has adapted its approaches to be effective in extremely challenging circumstances is a key objective of this report.