Composition of the Council
The Security Council consists of 15 member states, divided into two distinct categories: permanent members and non-permanent members. This dual structure was established by the UN Charter (Chapter V) and has remained largely unchanged since the organization's inception.
Permanent Members (P5)
Five states hold permanent seats with the power to veto substantive resolutions. These are the principal victorious powers of World War II:
- China (People's Republic of China, seated since 1971)
- France
- Russian Federation (succeeded Soviet Union in 1991)
- United Kingdom
- United States
The P5's veto power is enshrined in Article 27 of the UN Charter. A single negative vote from any permanent member on a substantive matter prevents the adoption of a resolution, regardless of the support from other members.
Non-Permanent Members (E10)
Ten non-permanent members are elected by the General Assembly for two-year terms. Seats are allocated geographically to ensure equitable representation:
| Region | Seats | Term Rotation |
|---|---|---|
| African Group | 3 | Rotating every 2 years |
| Asian Group | 2 | Rotating every 2 years |
| Western European Group | 1 | Rotating annually |
| Latin American Group | 2 | Rotating every 2 years |
| Eastern European Group | 2 | Rotating every 2 years |
Members cannot immediately succeed themselves; a "cooling-off" period of two years is customary, though not strictly mandatory in the Charter.
Voting Procedures
The voting mechanics of the Security Council are critical to understanding its operation. Decisions require a quorum of nine members and specific majorities depending on the nature of the resolution.
"Decisions of the Security Council on procedural matters shall be made by an affirmative vote of nine members. Decisions on all other matters shall be made by an affirmative vote of nine members including the concurring votes of the permanent members." — UN Charter, Article 27
The Veto Power
The veto is the most distinctive and controversial feature of the Council. It allows any P5 member to block:
- Adoption of substantive resolutions
- Recommendations for peacekeeping operations
- Sanctions regimes
- Referrals to the International Criminal Court
It is important to note that a veto can only be cast by a permanent member. Non-permanent members lack this power. Furthermore, a "double veto" can occur if a P5 member challenges whether a matter is procedural or substantive, requiring two separate votes.
Presidency and Procedure
The Security Council rotates its presidency monthly among its members in alphabetical order. The President:
- Chairs meetings and maintains order
- Issues press statements on behalf of the Council
- Can convene informal consultations ("Friends of the Chair")
- Does not have additional voting power
The presidency rotates regardless of a member's status as permanent or non-permanent, ensuring procedural equity.
Subsidiary Organs
The Council establishes subsidiary bodies to carry out specific mandates. Key examples include:
- Counter-Terrorism Committee (CTC): Established post-9/11 to coordinate counter-terrorism efforts
- Sanctions Committees: Oversee specific sanctions regimes (e.g., North Korea, Iran, Libya)
- Peacekeeping Operations: Authorizes and oversees UN blue helmet missions
- Mission-Specific Panels of Experts: Monitor compliance with sanctions and investigate violations
Reform Debates
Since the end of the Cold War, calls for Security Council reform have intensified. Major proposals include:
- Expansion of Permanent Membership: Candidates include Germany, Japan, India, and Brazil (G4 nations), as well as African representation
- Veto Reform: Voluntary moratoriums on veto use in mass atrocity cases; France and UK introduced a draft resolution in 2015
- Accountability Mechanisms: Greater transparency in decision-making and enhanced reporting to the General Assembly
Reform requires amendment to the UN Charter under Article 108, necessitating ratification by two-thirds of members, including all P5 states. This creates a fundamental paradox: those most affected by the current structure hold the veto over its change.