The Middle East has experienced more peacekeeping activity, both in volume and variety, than any other region in the world. At the present time the United Nations Interim Force in the Lebanon (UNIFIL) is active in southern Lebanon, the United Nations Disengagement Observer Force (UNDOF) is maintaining its vigil on the Golan Heights, the Multinational Force and Observers (MFO) are stationed in the Sinai, and Observers of the UN Truce Supervision Organisation (UNTSO) are serving in various sectors of the Middle East.