For in depth information, visit the UNMIS website, or see what Wikipedia has to say about UNMIS.
In short, UNMIS is a United Nation mission to support the implementation of the Comprehensive Peace Agreement (often referred to as the CPA) between the Government of Sudan and the Sudan People Liberation Movement/Army. UNMIS is also to perform certain functions in relation to humanitarian assistance as well as protecting and promoting human rights.
UNMIS has a number of tools available to perform these tasks, including but not limited to;
- roughly 9000 peace keeping troops, including de-mining personnel
- up to 750 military observers who, unarmed, makes sure that both parties adhere to the CPA and report any infractions to the UN
- up to 715 UN police, who help the local police to become self sufficient
- a number of international civilian personnel, local civilian staff and UN volunteers.
For a up to date map of sectors, units etc, see this PDF.
The mandate for UNMIS ended on July 9th 2011. A follow up mission (UNMISS) is in the works.