Соответствующая норма
Practice Relating to Rule 131. Treatment of Displaced Persons
In 1996, during a debate in the UN Commission on Human Rights, the representative of the Sudan noted that:
his country was grappling with the problem of internally displaced persons and said that the authorities were making every effort to solve it, in particular by establishing specialized agencies and coordinating action by international humanitarian organizations.
As part of its search for solutions at the domestic level, the Government had concluded an agreement with two rebel movements in the southern part of the country, which would help to solve part of the problem …
Sudan would continue to cooperate with the International Committee of the Red Cross and voluntary organizations, including the regions to which displaced persons were returning. 
Sudan, Statement before the UN Commission on Human Rights, UN Doc. E/CN.4/1996/SR.40, 20 May 1996, §§ 43–46.