UNTOP Total Abbreviations : FS=Field Service ; SS=Security Service ; GS=General Service . Missions : BONUCA ( United Nations Peacebuilding Support Office in the Central African Republic ) , MINURSO ( United Nations Mission for the Referendum in Western Sahara ) , MONUC ( United Nations Organization Mission in the Democratic Republic of the Congo ) , UNMEE ( United Nations Mission in Ethiopia and Eritrea ) , UNMIN ( United Nations Mission in Nepal ) , UNMIS ( United Nations Mission in the Sudan ) , UNMIT ( United Nations Integrated Mission in Timor-Leste ) , UNOGBIS ( United Nations Peacebuilding Support Office in Guinea-Bissau ) , UNOMIG ( United Nations Observer Mission in Georgia ) , UNPOS ( United Nations Political Office for Somalia ) , UNTOP ( United Nations Tajikistan Office of Peacebuilding ) .