The UN has played various roles during the conflict and peace process: a military role through its observer mission (UNOMIG); dual diplomatic roles through the Security Council and the appointment of a special envoy, succeeded by a special representative to the secretary-general; a humanitarian role (UNHCR and UNOCHA); a development role (UNDP); a human rights role (UNHCHR); and a low-key capacity and confidence-building role (UNV). The UN's position has been that there will be no forcible change in international borders. Any settlement must be freely negotiated and based on autonomy for Abkhazia legitimised by referendum under international observation once the multi-ethnic population has returned.