While there is a consensus in the international community that ethnic groups have been targeted in Darfur and that crimes against humanity have therefore occurred, there has been debate in some quarters about whether genocide has taken place there. In May 2006, the International Commission of Inquiry on Darfur organized by United Nations "concluded that the Government of the Sudan has not pursued a policy of genocide ... [though] international offences such as the crimes against humanity and war crimes that have been committed in Darfur may be more serious and heinous than genocide." Eric Reeves, a researcher and frequent commentator on Darfur, has questioned the methodology of the commission's report.

United Nations Security Council Resolution 1564, adopted on 18 September 2004, after recalling resolutions 1502 (2003), 1547 (2004) and 1556 (2004), the Council threatened the imposition of sanctions against Sudan if it failed to comply with its obligations on Darfur, and an international inquiry was established to investigate violations of human rights in the region.