United Nations Security Council
Along with the five permanent members, the Security Council of the United Nations has temporary members that hold their seats on a rotating basis by geographic region. Non-permanent members may be involved in global security briefings. In its first two decades, the Security Council had six non-permanent members, the first of which were Australia, Brazil, Egypt, Mexico, the Netherlands, and Poland. In 1965, the number of non-permanent members was expanded to ten.
United Nations Security Council Resolution 129
United Nations Security Council resolution 129, adopted unanimously on August 7, 1958, called an emergency special session of the General Assembly. The resolution states that this was as a result of the lack of unanimity of its permanent members at the council's 834th and 837th meetings which prevented it from exercising its primary responsibility for the maintenance of international peace and security.