The United Nations Support Office in Somalia (UNSOS) is the United Nations Mission established pursuant to Security Council resolution 1863 (16 January 2009) . It was originally mandated as the United Nations Support Office for AMISOM (UNSOA) to provide logistical support to the African Union Mission in Somalia (AMISOM).

Today, UNSOS provides logistical support to the African Union Support and Stabilization Mission in Somalia (AUSSOM), contributing to the enhancement of peace, security, and stability in Somalia and the wider region.

Most recently, Security Council resolution 2809 (2025), adopted unanimously on 23 December 2025, extended the mandate of AUSSOM until 31 December 2026 which is tasked with supporting stabilization efforts in Somalia. It authorizes Member States of the African Union to continue to deploy up to 11,826 uniformed personnel, which includes 680 police personnel.

The resolution reaffirms continued UN logistical support through UNSOS for the United Nations Transitional Assistance Mission in Somalia (UNTMIS) until 31 October 2026 and authorises support to AUSSOM uniformed personnel.

It further authorises support to up to 20,900 Somali National Army (SNA) and Somali National Police Force (SNPF) personnel engaged in joint or coordinated operations with AUSSOM, funded through the UNSOS-administered Trust Fund.

The resolution requests the United Nations, in full consultation with the FGS, to continue to support Somalia in planning for and developing its sovereign capacity in logistical support. It further requests the Secretary-General to continue United Nations support to Somalia on countering the threat of IEDs.

a) Support to the African Union Support and Stabilisation Mission in Somalia (AUSSOM)

Under Resolution 2809 (2025), UNSOS provides United Nations logistical support to AUSSOM, which is essential to stabilisation and security efforts in Somalia. UNSOS is mandated to support up to 11,826 uniformed personnel, including 680 police and up to 85 civilians. Funding for AUSSOM is provided through assessed contributions.

The support package includes life support services such as food, water and fuel; medical infrastructure and supplies; casualty evacuation; land, sea and air transportation; engineering services (accommodation, ablutions, water wells, waste management and defensive infrastructure); counter-IED support; equipment repair and maintenance; HF/VHF communications; IT and strategic communications; and training. All support is provided in full compliance with the UN Human Rights Due Diligence Policy (HRDDP).

While UNSOS’s mandate remains unchanged for 2026, liquidity shortfalls could potentially impact AUSSOM’s operational activities. The resolution underscores the urgent need to broaden the donor base and secure multi-year financing from both traditional and new partners to sustain peace and security gains made so far in Somalia.

b) Support to the Somalia Security Forces (SSF)

c) Support to UNTMIS

UNSOS is mandated, through the Resolution 2898 (2025) to provide administrative and logistical support to the United Nations Transitional Assistance Mission in Somalia (UNTMIS) on a cost-recovery basis until 31 October 2026, enabling UNTMIS to maintain its presence across Somalia during its second and final phase of transition.

Support includes office and living accommodation, food, water, transportation, medical services, finance and human resources.

UNSOS Background  

Over time, both missions, the UN and the AU missions, were reconfigured.

UNSOA became UNSOS under Security Council resolution 2245 (9 November 2015).

AMISOM transitioned to the African Union Transition Mission in Somalia (ATMIS) pursuant to UNSC resolution 2628 (31 March 2022), and subsequently to the African Union Support and Stabilisation Mission in Somalia (AUSSOM) following the adoption of UNSC resolution 2767 (2024) on 27 December 2024.

Read the UN Security Council resolution 2809 (2025).