The DPKO traces its roots to 1948 with the creation of the UNMOGIP and UNTSO. Up to the late 1980s, peacekeeping missions were operated by six officials in the United Nations Office of Special Political Affairs. From the beginning, peacekeeping operations operated with a clear doctrine that applied to its traditional or classical peacekeeping operations for inter-state ceasefires: peacekeepers did not take sides or discharge firearms, save in self-defense, or meddle in politics. The official DPKO was created in 1992 when Boutros-Boutros Ghali took office as Secretary-General of the United Nations; its creation was one of his first decisions. Goulding became under-secretary-general (or USG) for peacekeeping with Kofi Annan appointed as his deputy. The role of the DPKO, however, wasn't clarified until June 1992, when Boutrous-Ghali issued a plan to strengthen the UN's capacity for preventative diplomacy and peacekeeping, entitled An Agenda For Peace. DPKO is split into two main offices: the Office of Operations and the Office of Mission Support. Included within the Office of Mission Support (or OMS) are the logistics and administrative divisions, which provide logistics, personnel, and financial support services to DPKO missions. OMS is responsible for determining financial reimbursement to UN member states for their contribution of Contigent owned equipment, troops, and services to peacekeeping missions. Also part of DPKO are Mine Action, Training, Best Practices, and Military and Police Divisions. A March 2007 United Nations General Assembly Resolution titled “Strengthening the capacity of the Organization in Peacekeeping Operations” has called for the re-structuring of the department and the establishment of a separate Department of Field Support. This re-organisation was paralleled by a DPKO reform effort launched in 2005 entitled 'Peace Operations 2010'.