Disputes - international:
the effects of Sudan's ethnic and rebel militia fighting since the mid-20th century have penetrated all of the neighboring states; Chad wishes to be a helpful mediator in resolving the Darfur conflict, and in 2010 established a joint border monitoring force with Sudan, which has helped to reduce cross-border banditry and violence; as of early 2019, more than 590,000 Sudanese refugees are being hosted in the Central African Republic, Chad, Egypt, Ethiopia, Kenya, and South Sudan; Sudan, in turn, is hosting more than 975,000 refugees and asylum seekers, including more than 845,000 from South Sudan; Sudan accuses South Sudan of supporting Sudanese rebel groups; Sudan claims but Egypt de facto administers security and economic development of the Halaib region north of the 22nd parallel boundary; periodic violent skirmishes with Sudanese residents over water and grazing rights persist among related pastoral populations along the border with the Central African Republic; South Sudan-Sudan boundary represents 1 January 1956 alignment, final alignment pending negotiations and demarcation; final sovereignty status of Abyei Area pending negotiations between South Sudan and Sudan

Refugees and internally displaced persons:
refugees (country of origin): 810,917 (South Sudan) (refugees and asylum seekers), 121,156 (Eritrea) (refugees and asylum seekers), 93,502 (Syria) (refugees and asylum seekers), 14,272 (Ethiopia) (refugees and asylum seekers), 9,289 (Central African Republic) (2019)
IDPs: 2.072 million (civil war 1983-2005; ongoing conflict in Darfur region; government and rebel fighting along South Sudan border; inter-tribal clashes) (2018)

Trafficking in persons:
current situation: Sudan is a source, transit, and destination country for men, women, and children who are subjected to forced labor and sex trafficking; Sudanese women and girls, particularly those from rural areas or who are internally displaced, or refugees are vulnerable to domestic servitude in country, as well as domestic servitude and sex trafficking abroad; migrants from East and West Africa, South Sudan, Syria, and Nigeria smuggled into or through Sudan are vulnerable to exploitation; Ethiopian, Eritrean, and Filipino women are subjected to domestic servitude in Sudanese homes, and East African and possibly Thai women are forced into prostitution in Sudan; Sudanese children continue to be recruited and used as combatants by government forces and armed groups
tier rating: Tier 2 Watch List - Sudan does not fully comply with the minimum standards for the elimination of trafficking; however, it is making significant efforts to do so; the government increased its efforts to publically address and prevent trafficking, established a national anti-trafficking council, and began drafting a national action plan against trafficking; the government acknowledges cross-border trafficking but still denies the existence of forced labor, sex trafficking, and the recruitment of child soldiers domestically; law enforcement and judicial officials struggled to apply the national anti-trafficking law, often relying on other statutes with lesser penalties; authorities did not use systematic procedure to identify victims or refer them to care and relied on international organizations and domestic groups to provide protective services; some foreign victims were penalized for unlawful acts committed as a direct result of being trafficked, such as immigration or prostitution violations (2015)