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.
Criticism of the United Nations
Some have questioned whether the UN might be relevant in the 21st century.
While the UN’s first and second Charter mandates require the UN: “To maintain international peace and security... (and if necessary to enforce the peace by) taking preventive or enforcement action,”
due to its restrictive administrative structure, the permanent members of the Security Council themselves have sometimes prevented the UN from fully carrying out its first two mandates.
Without the unanimous approval, support (or minimally abstention) of all 5 of the permanent members of the UN's Security Council, the UN's charter only enables it to "observe", report on, and make recommendations regarding international conflicts . Such unanimity on the Security Council regarding the authorization of armed UN enforcement actions has not always been reached in time to prevent the outbreak of international wars.