In January 2005, the North and South signed the Comprehensive Peace Agreement (CPA) and the UN deployed a peacekeeping force in Southern Sudan. The CPA granted the South autonomy for 6 years after which a referendum for secession was scheduled for 2011. The A separate conflict, which broke out in the western region of Darfur in 2003, has displaced nearly two million people and caused an estimated 200,000 to 400,000 deaths. The UN took command of the Darfur peacekeeping operation from the African Union in December 2007.