Reform of the United Nations Security Council (UNSC) encompasses five key issues: categories of membership, the question of the veto held by the five permanent members, regional representation, the size of an enlarged Council and its working methods, and the Security Council-General Assembly relationship. Member States, regional groups and other Member State interest groupings developed different positions and proposals on how to move forward on this contested issue.
Any reform of the Security Council would require the agreement of at least two-thirds of UN member states, and that of all the permanent members of the UNSC enjoying the veto right.
The composition of the Security Council was established in 1945. Since then the geopolitical realities have changed drastically, but the Council has changed very little. The victors of World War II shaped the United Nations Charter in their national interests, dividing the permanent seats, and associated veto power, among themselves. Any reform of the Security Council would require an amendment to the Charter. Article 108 of the Charter states:
Amendments to the present Charter shall come into force for all Members of the United Nations when they have been adopted by a vote of two thirds of the members of the General Assembly and ratified in accordance with their respective constitutional processes by two thirds of the Members of the United Nations, including all the permanent members of the Security Council.
With the enlargement of the United Nations membership and increasing self-confidence among the new members, going hand in hand with processes of decolonization, old structures and procedures were increasingly challenged. The imbalance between the number of seats in the Security Council and the total number of member States became evident, and the only significant reform of the Security Council occurred in 1965: this included an increase in the non-permanent membership from six to 10 members. With Boutros Boutros-Ghali elected as Secretary-General in 1992, the reform discussions of the UN Security Council were launched again as he started his new term with the first-ever summit of the Security Council and then published "An Agenda for Peace". His motivation was to restructure the composition and arguably anachronistic procedures of the UN organ to recognize the changed world.