The United Nations Security Council is one of the six principal organs of the United Nations, and is the United Nations' executive branch, having primary responsibility for the maintenance of international peace and security. Its powers, outlined in the UN Charter, include establishing peacekeeping operations, authorizing military action, and imposing international sanctions. Under Chapter VII of the UN Charter, the council may identify threats to international peace, determine breaches of that peace, and authorize responses up to and including the use of force. It is the only UN body with the authority to adopt binding international law by issuing resolutions binding on all member states. The council also recommends the admission of new member states to the UN General Assembly, and approves changes to the Charter. It is led by the president of the Security Council, who chairs its meetings and rotates between the current members on a monthly basis and the United Nations secretary-general who acts as its executive officer overseeing the implementation of its decisions and mandates. The United Nations secretary-general is empowered by the UN Charter to "bring to the attention of the Security Council any matter which in his opinion may threaten the maintenance of international peace and security".
The Security Council consists of 15 members: five permanent members – Russia, China, the United States, the United Kingdom, and France – and ten non-permanent members elected by the General Assembly for two-year terms. The five permanent members, who were the great powers among the Allies of World War II or their recognized successor states, each hold veto power over substantive resolutions, enabling any one of them to block adoption of a draft resolution regardless of the level of support among other members. This veto right does not carry over into General Assembly matters or votes, which are non-binding. The presidency rotates monthly among all fifteen members in English alphabetical order.
Created in 1945 after World War II to succeed the League of Nations in maintaining international order,McNeill, J. R.; Pomeranz, Kenneth, eds. (2015). Production, Destruction and Connection, 1750–Present, Part 1, Structures, Spaces, and Boundary Making. The Cambridge World History. Vol. 7. p. 324. Cambridge University Press. doi:10.1017/CBO9781139196079. . the council held its first session on 17 January 1946 at Church House, Westminster, in London. During the Cold War, it was largely paralyzed by rivalry between the United States and the Soviet Union, though it authorized interventions in the Korean War and the Congo Crisis and deployed peacekeepers to Cyprus and the Sinai Peninsula. Following the dissolution of the Soviet Union in 1991, peacekeeping expanded dramatically: the council authorized major operations in Kuwait, Namibia, Cambodia, Bosnia, and Somalia, among others. In the 2020s, the council has faced renewed paralysis, with repeated vetoes by Russia over the war in Ukraine and by the United States over the war in Gaza, prompting fresh calls for structural reform.
Resolutions of the Security Council are enforced in part through UN peacekeeping missions, comprising military, police, and civilian personnel voluntarily provided by member states. , there were 11 active peacekeeping missions with approximately 70,000 personnel from over 120 contributing countries, funded through an approved annual budget of approximately .
History
Background and creation
In the century prior to the United Nations' creation, several international treaty organisations and conferences had been formed to regulate conflicts between nations, such as the International Committee of the Red Cross and the Hague Conventions of 1899 and 1907. Following the catastrophic loss of life in World War I, the Paris Peace Conference established the League of Nations to maintain harmony between nations. The League successfully resolved some territorial disputes and created international structures for postal mail, aviation, and opium control, some of which were later absorbed into the UN. However, it lacked representation for colonial peoples – then half the world's population – and significant participation from several major powers, including the United States, the USSR, Germany, and Japan. It failed to act against the 1931 Japanese invasion of Manchuria, the Second Italo-Ethiopian War in 1935, the 1937 Japanese occupation of China, and Nazi expansions under Adolf Hitler that escalated into World War II.
On New Year's Day 1942, President Franklin D. Roosevelt, Prime Minister Winston Churchill, Maxim Litvinov of the USSR, and T. V. Soong of the Republic of China signed a short document based on the Atlantic Charter and the London Declaration. The next day, representatives of 22 other nations added their signatures, and the document came to be known as the United Nations Declaration. By 1 March 1945, 21 additional states had signed. The four major Allied countries – the United States, the United Kingdom, the Soviet Union, and the Republic of China – were styled the "Four Powers" and became the foundation of the Security Council's executive structure.
Following the 1943 Moscow Conference and Tehran Conference, delegations from the Big Four met in mid-1944 at the Dumbarton Oaks Conference in Washington, D.C., to negotiate the UN's structure. The composition of the Security Council quickly became the dominant issue. France, the Republic of China, the Soviet Union, the United Kingdom, and the United States were selected as permanent members; the United States attempted to add Brazil as a sixth member but was opposed by the Soviet and British delegations. The most contentious question at Dumbarton Oaks and in successive talks was the veto rights of permanent members. The Soviet delegation argued that each permanent member should have an absolute veto that could block matters from even being discussed, whilst the British argued that nations should not be able to veto resolutions on disputes to which they were a party. At the Yalta Conference of February 1945, the US, UK, and Russian delegations agreed that each of the Big Five could veto any action by the council, but not procedural resolutions.
On 25 April 1945, the UN Conference on International Organization began in San Francisco, attended by 50 governments and a number of non-governmental organizations involved in drafting the United Nations Charter. At the conference, H. V. Evatt of the Australian delegation pushed to further restrict the veto power of permanent members, but his proposal was defeated twenty votes to ten, owing to fears that rejecting the strong veto would cause the conference to fail.
The UN officially came into existence on 24 October 1945 upon ratification of the UN Charter by the five permanent members and a majority of the other 46 signatories. The Security Council met for the first time on 17 January 1946 at Church House, Westminster, in London. During the 1946–1951 period, it conducted sessions at the United Nations' interim headquarters in Lake Success, New York, which were televised live on CBS by the journalist Edmund Chester in 1949.
Cold War
The Security Council was largely paralyzed in its early decades by the Cold War between the United States and the Soviet Union, and their respective allies; the council was generally able to intervene only in conflicts unrelated to the superpower rivalry. A notable exception was the 1950 Security Council resolution authorizing a US-led coalition to repel the North Korean invasion of South Korea, passed during a Soviet boycott of the council. In 1956, the first UN peacekeeping force was established to end the Suez Crisis, but the UN was unable to intervene against the simultaneous Soviet invasion of Hungary. Cold War divisions also paralyzed the Security Council's Military Staff Committee, which had been created by Articles 45–47 of the Charter to oversee UN forces and create UN military bases. The committee continued to exist on paper but largely abandoned its work in the mid-1950s.
In 1960, the UN deployed the UN Operation in the Congo (ONUC) – the largest military force of its early decades – to restore order to the breakaway State of Katanga, returning it to the control of the Democratic Republic of the Congo by 1964. The Security Council found itself bypassed in favour of direct superpower negotiations during some of the decade's larger conflicts, such as the Cuban Missile Crisis and the Vietnam War. It focused instead on smaller conflicts without an immediate Cold War dimension, deploying the UN Temporary Executive Authority in West New Guinea in 1962 and the UN Peacekeeping Force in Cyprus in 1964, the latter of which became one of the UN's longest-running peacekeeping missions.
On 25 October 1971, over US opposition but with the support of many Third World nations, the mainland People's Republic of China replaced the Republic of China in the Security Council seat; the vote was widely seen as a sign of waning US influence in the organization. With an increasing Third World presence and failures of UN mediation in the Middle East, Vietnam, and Kashmir, the UN increasingly shifted its attention toward economic development and cultural exchange. By the 1970s, the UN budget for social and economic development far exceeded its budget for peacekeeping.
Post-Cold War
After the Cold War, the UN saw a radical expansion in its peacekeeping duties, taking on more missions in ten years than it had in the previous four decades. Between 1988 and 2000, the number of adopted Security Council resolutions more than doubled, and the peacekeeping budget increased more than tenfold.; . The UN negotiated an end to the Salvadoran Civil War, launched a successful peacekeeping mission in Namibia, and oversaw democratic elections in post-apartheid South Africa and post-Khmer Rouge Cambodia. In 1991, the Security Council condemned the Iraqi invasion of Kuwait on the same day of the attack and later authorized a US-led coalition that successfully repulsed the Iraqi forces. Undersecretary-General Brian Urquhart later described the hopes raised by these successes as a "false renaissance" for the organization, given the more troubled missions that followed.
Though the Charter had been written primarily to prevent aggression by one nation against another, in the early 1990s the UN faced a number of simultaneous serious crises within states, including Haiti, Mozambique, and the former Yugoslavia. The UN mission to Bosnia faced "worldwide ridicule" for its indecisive and confused response to ethnic cleansing.For quotation "worldwide ridicule", see ; for description of UN missions in Bosnia, see . In 1994, the UN Assistance Mission for Rwanda failed to intervene in the Rwandan genocide amid Security Council indecision.
In the late 1990s, UN-authorized international interventions took a wider variety of forms. The UN mission during the 1991–2002 Sierra Leone Civil War was supplemented by British Royal Marines, and the UN-authorized 2001 invasion of Afghanistan was overseen by NATO. In 2003, the United States invaded Iraq without a UN Security Council resolution authorizing the use of force, prompting renewed questioning of the council's effectiveness. In the same decade, the Security Council deployed peacekeepers to address the War in Darfur in Sudan and the Kivu conflict in the Democratic Republic of the Congo. In 2013, an internal review of UN actions in the final battles of the Sri Lankan Civil War in 2009 concluded that the organization had suffered "systemic failure".
21st century