The Darfur conflict is a complex crisis in the Darfur region of western Sudan. One side of the armed conflict is composed mainly of the Sudanese military and the Janjaweed, a militia group recruited mostly from the Arab Baggara tribes of the northern Rizeigat, camel-herding nomads. The other side comprises a variety of rebel groups, notably the Sudan Liberation Movement and the Justice and Equality Movement, recruited primarily from the land-tilling Fur, Zaghawa, and Massaleit ethnic groups. The Sudanese government, while publicly denying that it supports the Janjaweed, has provided money and assistance to the militia and has participated in joint attacks targeting the tribes from which the rebels draw support. The conflict began in February 2003. Unlike in the Second Sudanese Civil War, which was fought between the primarily Muslim north and Christian and Animist south, almost all of the combatants and victims in Darfur are Muslim. The combination of decades of drought, desertification, and overpopulation are among the causes of the Darfur conflict, because the Baggara nomads searching for water have to take their livestock further south, to land mainly occupied by non-Arab farming communities.