A special session of the United Nations General Assembly, or UNGASS, occurs when the United Nations General Assembly meets in order to discuss an important wide-ranging topic.
Under Chapter IV, article 20 of the United Nations Charter, "Special sessions shall be convoked by the Secretary-General at the request of the Security Council or of a majority of the Members of the United Nations." The request of the Security Council requires a vote of nine or more of its fifteen members. However, since 1975, all special sessions have been called by the General Assembly.[1][2]
Each special session deals exclusively with one topic with a short agenda. They are typically high-level events with the participation of heads of state and government and government ministers. A special session usually adopts one or two outcome documents, such as a political declaration, action plan or a strategy. Special sessions last from one to several days. Like a regular annual session, a special session consists of both formal and informal plenary meetings, with a Committee of the Whole negotiating the outcome document.[1]