The Janjaweed (Arabic: جنجويد janjawīd, formed from the Arabic words for "man", "gun" and "horse"; also transliterated Janjawid) is a blanket term used to describe mostly gunmen in Darfur, western Sudan, and now eastern Chad. Using the United Nations definition, the Janjaweed comprised Sudanese Arab tribes, the core of whom are from the Abbala (camel herder) background with significant Lambo recruitment from the Baggara (cattle herder) people. This UN definition may not necessarily be accurate, as instances of members from other tribes have been noted.

In the past, they were at odds with Darfur's sedentary population over natural grazing grounds and farmland, as rainfall dwindled and water became scarce. They are currently in conflict with Darfur rebel groups—the Sudan Liberation Movement/Army and the Justice and Equality Movement. Since 2003 they have been one of the main players in the Darfur conflict, which has pitted the largely nomadic tribes against the sedentary population of the region in a battle over resource and land allocation.

The Nuba Mountains (also referred to as the Nuba Hills) is an area located in South Kordofan, Sudan. The area is home to a group of indigenous ethnic groups known collectively as the Nuba peoples. In the 18th century, Nuba Mountains became home to the kingdom of Taqali that controlled the hills of the mountains until their defeat by Mahdi Muhammad Ahmad. After the Mahdi's defeat by the British, Taqali was restored as a client state. Infiltration of the Messiria tribe of Baggara Arabs has been influential in modern conflicts.

The mountains cover an area roughly 40 miles (64 km) wide by 90 miles (140 km) long, and are 1,500 to 3,000 feet (910 m) higher in elevation than the surrounding plain. The mountains stretch for some 48,000 square kilometres (19,000 square miles). The climate is semi-arid with under 800 mm of rain per year on average, but lush and green compared with most nearby areas. There are almost no roads in the Nuba Mountains; most villages there are connected by ancient paths that cannot be reached by motor vehicles. The rainy season extends from mid-May to mid-October, and annual rainfall ranges from 400 to 800 millimetres (16.4 to 32.8 in), allowing grazing and seasonal rain-fed agriculture.

Musa Hilal was born in 1961. His family exercised tribal leadership of the Arab Mahameed clan in Darfur. He is Sudanese Arab Janjaweed militia leader and adviser to the Sudanese minister of internal affairs. The Janjaweed militia were responsible for a massive military campaign against civilians in Darfur in 2003, as part of a counterinsurgency effort against Darfur rebel groups. On 21 January 2008, the Federal Government of Sudan announced the nomination of Musa Hilal as the chief advisor of the Ministry of Federal Affairs in Sudan. This position allows Mr. Hilal to coordinate with regional leaders surrounding Darfur, as well as with Arab tribal groups, on the relations of the military regime. This political position further permits the military leader power over decisions made in Khartoum pertaining the recruitment of Janjaweed militias.