In October 2005, al-Bashir's government negotiated an end to the Second Sudanese Civil War, leading to a referendum in the South, resulting in the separation of the south as the country of South Sudan. In the Darfur region, he oversaw the war in Darfur that resulted in death tolls that are about 10,000 according to the Sudanese Government, but most sources suggest between 200,000 and 400,000. During his presidency, there have been several violent struggles between the Janjaweed militia and rebel groups such as the Sudanese Liberation Army (SLA) and the Justice and Equality Movement (JEM) in the form of guerrilla warfare in the Darfur region. The civil war displaced over out of a total population of 6.2 million in Darfur and created a crisis in the diplomatic relations between Sudan and Chad. The rebels in Darfur lost the support from Libya after the death of Muammar Gaddafi and the collapse of his regime in 2011.