• Commission for the Investigation of Greek Frontier Incidents (1946-1951)
• United Nations Special Committee on Palestine - UNSCOP (1947)
• United Nations Palestine Commission - UNPAC (1948)
• United Nations Commission for India and Pakistan - UNCIP (1948-1950)
• Mediator for Palestine (1948-1950)
• United Nations Truce Supervision Organization - UNTSO (1948-present)
• United Nations Commissioner in Libya (1949-1952)
• Commission for Eritrea (1950)
• United Nations Korean Reconstruction Agency - UNKRA (1950-1958)
• Commission for the Unification and Rehabilitation of Korea - UNCURK (1951-1973)
• United Nations Emergency Force I - UNEF I (1956-1967)
• United Nations Observation Group in Lebanon - UNOGIL (1958)
• Special Representative in Amman - Spinelli Mission (1958-1967)
• United Nations Operations in the Congo - ONUC (1960-1964)
• United Nations Temporary Executive Authority in West Irian - UNTEA (1962-1963)
• United Nations Yemen Observation Mission - UNYOM (1963-1964)
• United Nations Peacekeeping Force in Cyprus - UNFICYP (1964-present)
• United Nations India-Pakistan Observation Mission - UNIPOM (1965-1966)
• United Nations Middle East Mission - UNMEM (1968-1973)
• United Nations East Pakistan Relief Operation - UNEPRO; United Nations Relief Operations in Dacca-Bangladesh (UNROD/UNROB) (1971-1973)
• United Nations Emergency Force II - UNEF II (1973-1979)
• United Nations Iran-Iraq Military Observer Group (UNIIMOG) (1988-1991)
• United Nations Transition Assistance Group - UNTAG (1989-1990)
• United Nations Advance Mission in Cambodia - UNAMIC (1991-1992)
• United Nations Observer Mission in El Salvador - ONUSAL (1991-1995)
• United Nations Iraq-Kuwait Observation Mission - UNIKOM (1991-2003)
• International Conference on the Former Yugoslavia - ICFY (1992-1993)
• United Nations Transitional Authority in Cambodia - UNTAC (1992-1993)
• United Nations Observer Mission in South Africa (UNOMSA) (1992-1994)
• United Nations Operation in Mozambique - ONUMOZ (1992-1994)
• United Nations Protection Force - UNPROFOR (1992-1995) and United Nations Peace Forces - UNPF (1995-1996)
• United Nations Assistance Mission for Rwanda - UNAMIR (1993-1996)
• United Nations Observer Mission in Liberia - UNOMIL (1993-1997)
• United Nations Political and Peacekeeping Missions in Haiti (1993-2001)
• United Nations Mission of Observers in Tajikistan - UNMOT (1994-2000) & United Nations Tajikistan Office of Peace Building - UNTOP (2000-2007)
• United Nations International Commission of Inquiry for Burundi - UNICIB (1995-1996)
• United Nations Preventive Deployment Force - UNPREDEP (1995-1999)
• United Nations Observer Mission in Angola - MONUA (1997-1999)
• United Nations Mission in Sierra Leone - UNAMSIL (1999-2005)
• United Nations Operation in Somalia II - UNOSOM II (1993-1995)