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47 events on this timeline
  1. International Committee of the Red Cross

    Tuesday Feb 17, 1863Geneva, Switzerland

    In the century prior to the UN's creation, several international treaty organizations such as the International Committee of the Red Cross were formed to ensure protection and assistance for victims of armed conflict and strife.

  2. Archduke Franz Ferdinand assassination

    Sunday Jun 28, 1914Sarajevo, Kingdom of Serbia (Present-Day in Bosnia and Herzegovina)

    In 1914, a political assassination in Sarajevo set off a chain of events that led to the outbreak of World War I. As more and more young men were sent down into the trenches, influential voices in the United States and Britain began calling for the establishment of a permanent international body to maintain peace in the postwar world.

  3. 14-point proposal to end the war

    1918U.S.

    President Woodrow Wilson became a vocal advocate of this concept, and in 1918 he included a sketch of the international body in his 14-point proposal to end the war.

  4. Armistice of 11 November 1918

    Monday Nov 11, 191803:00:00 PMFrance

    In November 1918, the Central Powers agreed to an armistice to halt the killing in World War I.

  5. Paris Peace Conference

    Saturday Jan 18, 1919Paris, France

    Two months later, the Allies met with Germany and Austria-Hungary at Versailles to hammer out formal peace terms.

  6. Treaty of Versailles was signed

    Saturday Jun 28, 1919Palace of Versailles, Paris, France

    The League of Nations was approved, and in the summer of 1919, Wilson presented the Treaty of Versailles and the Covenant of the League of Nations to the US Senate for ratification.

  7. League of Nations

    Saturday Jan 10, 1920Geneva, Switzerland

    On 10 January 1920, the League of Nations formally came into being when the Covenant of the League of Nations, ratified by 42 nations in 1919, took effect.

  8. World War II was broke up

    Friday Sep 1, 1939Poland (and then Europe)

    World War II was broke up.

  9. Empty headquarters

    1939Geneva, Switzerland

    When war broke out in 1939, the League closed down and its headquarters in Geneva remained empty throughout the war.

  10. Four Policemen

    Monday Dec 29, 1941Washington D.C., U.S.

    The text of the "Declaration by United Nations" was drafted at the White House on 29 December 1941, by President Franklin D. Roosevelt, Prime Minister Winston Churchill, and Roosevelt aide Harry Hopkins. It incorporated Soviet suggestions but left no role for France. "Four Policemen" was coined to refer to four major Allied countries, the United States, the United Kingdom, the Soviet Union, and the Republic of China, which emerged in the Declaration by the United Nations.

  11. United Nations Declaration

    Thursday Jan 1, 1942U.S.

    "On New Year's Day 1942, President Roosevelt, Prime Minister Churchill, Maxim Litvinov, of the USSR, and T. V. Soong, of China, signed a short document which later came to be known as the United Nations Declaration, and the next day the representatives of twenty-two other nations added their signatures". A JOINT DECLARATION BY THE UNITED STATES OF AMERICA, THE UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND, THE UNION OF SOVIET SOCIALIST REPUBLICS, CHINA, AUSTRALIA, BELGIUM, CANADA, COSTA RICA, CUBA, CZECHOSLOVAKIA, DOMINICAN REPUBLIC, EL SALVADOR, GREECE, GUATEMALA, HAITI, HONDURAS, INDIA, LUXEMBOURG, NETHERLANDS, NEW ZEALAND, NICARAGUA, NORWAY, PANAMA, POLAND, SOUTH AFRICA, YUGOSLAVIA The Governments signatory hereto, Having subscribed to a common program of purposes and principles embodied in the Joint Declaration of the President of the United States of America and the Prime Minister of Great Britain dated August 14, 1941, known as the Atlantic Charter, Being convinced that complete victory over their enemies is essential to defend life, liberty, independence and religious freedom, and to preserve human rights and justice in their own lands as well as in other lands and that they are now engaged in a common struggle against savage and brutal forces seeking to subjugate the world, DECLARE: Each Government pledges itself to employ its full resources, military or economic, against those members of the Tripartite Pact and its adherents with which such government is at war. Each Government pledges itself to cooperate with the Governments signatory hereto and not to make a separate armistice or peace with the enemies. The foregoing declaration may be adhered to by other nations which are, or which may be, rendering material assistance and contributions in the struggle for victory over Hitlerism. The Washington Conference 1941–1942

  12. Dumbarton Oaks Conference

    Friday Sep 22, 1944Washington D.C., U.S.

    The UN was formulated and negotiated among the delegations from the Allied Big Four (the United States, the United Kingdom, the Soviet Union, and China) at the Dumbarton Oaks Conference from 21 September 1944 to 7 October 1944 and they agreed on the aims, structure and functioning of the UN.

  13. United Nations Conference on International Organization

    Wednesday Apr 25, 1945San Francisco, California, U.S.

    After months of planning, the UN Conference on International Organization opened in San Francisco, 25 April 1945, attended by 50 governments and a number of non-governmental organizations involved in drafting the UN Charter.

  14. The UN officially came into existence

    Wednesday Oct 24, 1945U.S.

    The UN officially came into existence 24 October 1945, upon ratification of the Charter by the five permanent members of the Security Council—France, the Republic of China, the Soviet Union, the UK, and the US—and by a majority of the other 46 signatories.

  15. Organs

    1945New York City, New York, U.S.

    The UN system is based on five principal organs: the General Assembly, the Security Council, the Economic and Social Council (ECOSOC), the International Court of Justice, and the UN Secretariat. A sixth principal organ, the Trusteeship Council, suspended operations on 1 November 1994, upon the independence of Palau, the last remaining UN trustee territory.

  16. First meetings of the General Assembly

    Thursday Jan 10, 1946London, England, United Kingdom

    The first meetings of the General Assembly, with 51 nations represented, and the Security Council took place in Methodist Central Hall, Westminster, London beginning on 10 January 1946. Debates began at once covering topical issues including the presence of Russian troops in Iranian Azerbaijan, Great Britain's forces in Greece and within days the first veto was cast.

  17. Final meeting of the League of Nations

    Thursday Apr 18, 1946Geneva, Switzerland

    The final meeting of the League of Nations took place on 18 April 1946 in Geneva.

  18. General Assembly approved a resolution to partition Palestine

    Saturday Nov 29, 1947U.S.

    On 29 November 1947, the General Assembly approved a resolution to partition Palestine, approving the creation of the state of Israel. Two years later, Ralph Bunche, a UN official, negotiated an armistice to the resulting conflict.

  19. Headquarters

    Tuesday Sep 14, 1948New York City, New York, U.S.

    The General Assembly selected New York City as the site for the headquarters of the UN, construction began on 14 September 1948 and the facility was completed on 9 October 1952. Its site—like UN headquarters buildings in Geneva, Vienna, and Nairobi—is designated as international territory. The Norwegian Foreign Minister, Trygve Lie, was elected as the first UN Secretary-General.

  20. Universal Declaration of Human Rights

    Friday Dec 10, 1948Paris, France

    In 1948, the General Assembly adopted a Universal Declaration of Human Rights, drafted by a committee headed by American diplomat and activist Eleanor Roosevelt, and including the French lawyer René Cassin. The document proclaims basic civil, political, and economic rights common to all human beings, though its effectiveness towards achieving these ends has been disputed since its drafting.

  21. Security Council resolution

    Friday Jul 7, 1950U.S.

    Though the UN's primary mandate was peacekeeping, the division between the US and USSR often paralyzed the organization, generally allowing it to intervene only in conflicts distant from the Cold War. Two notable exceptions were a Security Council resolution on 7 July 1950 authorizing a US-led coalition to repel the North Korean invasion of South Korea, passed in the absence of the USSR, and the signing of the Korean Armistice Agreement on 27 July 1953.

  22. UN peacekeeping force was established to end the Suez Crisis

    Wednesday Nov 7, 1956U.S.

    On 7 November 1956, the first UN peacekeeping force was established to end the Suez Crisis; however, the UN was unable to intervene against the USSR's simultaneous invasion of Hungary following that country's revolution.

  23. UN established United Nations Operation in the Congo

    Thursday Jul 14, 1960Congo

    On 14 July 1960, the UN established United Nations Operation in the Congo (UNOC), the largest military force of its early decades, to bring order to the breakaway State of Katanga, restoring it to the control of the Democratic Republic of the Congo by 11 May 1964.

  24. Dag Hammarskjöld death

    Tuesday Sep 19, 1961Ndola, Northern Rhodesia, Federation of Rhodesia and Nyasaland (now Ndola, Zambia)

    While traveling to meet rebel leader Moise Tshombe during the conflict, Dag Hammarskjöld, often named as one of the UN's most effective Secretaries-General, died in a plane crash; months later he was posthumously awarded the Nobel Peace Prize.

  25. UN's longest-running peacekeeping missions

    1964Cyprus

    In 1964, Hammarskjöld's successor, U Thant, deployed the UN Peacekeeping Force in Cyprus, which would become one of the UN's longest-running peacekeeping missions.

  26. Chinese seat on the Security Council

    Monday Oct 25, 1971U.S.

    With the spread of decolonization in the 1960s, the organization's membership saw an influx of newly independent nations. In 1960 alone, 17 new states joined the UN, 16 of them from Africa. On 25 October 1971, with opposition from the United States, but with the support of many Third World nations, the mainland, communist People's Republic of China was given the Chinese seat on the Security Council in place of the Republic of China that occupied Taiwan; the vote was widely seen as a sign of waning US influence in the organization.

  27. United Nations General Assembly Resolution 3379

    Monday Nov 10, 1975U.S.

    Third World nations organized into the Group of 77 coalition under the leadership of Algeria, which briefly became a dominant power at the UN. On 10 November 1975, a bloc comprising the USSR and Third World nations passed a resolution, over the strenuous US and Israeli opposition, declaring Zionism to be racism; the resolution was repealed on 16 December 1991, shortly after the end of the Cold War.

  28. Ronald Reagan withdrew his nation's funding from (UNESCO)

    1984Paris, France

    In 1984, US President Ronald Reagan, withdrew his nation's funding from the United Nations Educational, Scientific, and Cultural Organization (UNESCO) over allegations of mismanagement, followed by the UK and Singapore.

  29. UN authorized a US-led coalition that repulsed the Iraqi invasion of Kuwait

    1991Kuwait

    In 1991, the UN authorized a US-led coalition that repulsed the Iraqi invasion of Kuwait.

  30. Sierra Leone Civil War

    Saturday Mar 23, 1991Sierra Leone

    The UN mission in the Sierra Leone Civil War of 1991–2002 was supplemented by British Royal Marines.

  31. Reducing the size of the organization somewhat

    1992U.S.

    Boutros Boutros-Ghali, Secretary-General from 1992 to 1996, initiated a reform of the Secretariat, reducing the size of the organization somewhat.

  32. United Nations Commission on Human Rights was formed

    1993U.S.

    The United Nations Commission on Human Rights was formed in 1993 to oversee human rights issues for the UN, following the recommendation of that year's World Conference on Human Rights. Jacques Fomerand, a scholar of the UN, describes this organization's mandate as "broad and vague", with only "meager" resources to carry it out.

  33. UN Assistance Mission for Rwanda failed to intervene in the Rwandan genocide

    1994Rwanda

    In 1994, the UN Assistance Mission for Rwanda failed to intervene in the Rwandan genocide amid indecision in the Security Council.

  34. Worldwide ridicule

    Mar, 1995Bosnia and Herzegovina

    UN mission to Bosnia faced "worldwide ridicule" for its indecisive and confused mission in the face of ethnic cleansing.

  35. UN mission in Somalia was widely viewed as a failure

    1995Somalia

    The UN mission in Somalia was widely viewed as a failure after the US withdrawal following casualties in the Battle of Mogadishu.

  36. Further management reforms

    1997U.S.

    Kofi Annan (1997–2006), initiated further management reforms in the face of threats from the US to withhold its UN dues.

  37. Millennium Summit

    Wednesday Sep 6, 2000New York City, New York, U.S.

    The Millennium Summit was held in 2000 to discuss the UN's role in the 21st century. The three-day meeting was the largest gathering of world leaders in history and culminated in the adoption by all member states of the Millennium Development Goals (MDGs), a commitment to achieve international development in areas such as poverty reduction, gender equality, and public health. Progress towards these goals, which were to be met by 2015, was ultimately uneven.

  38. War in Afghanistan

    2001Afghanistan

    The invasion of Afghanistan in 2001 was overseen by NATO.

  39. United States invaded Iraq

    Saturday Mar 29, 2003Iraq

    In 2003, the United States invaded Iraq despite failing to pass a UN Security Council resolution for authorization, prompting a new round of questioning of the organization's effectiveness.

  40. 2005 World Summit

    Wednesday Sep 14, 2005New York City, New York, U.S.

    The 2005 World Summit reaffirmed the UN's focus on promoting development, peacekeeping, human rights, and global security.

  41. Human Rights Council

    Wednesday Mar 15, 2006Geneva, Switzerland

    In 2006, "The United Nations Commission on Human Rights" was replaced by a Human Rights Council consisting of 47 nations.

  42. UN intervened with peacekeepers in crises

    2000sU.S.

    Under the eighth Secretary-General, Ban Ki-moon, the UN intervened with peacekeepers in crises such as the War in Darfur in Sudan and the Kivu conflict in the Democratic Republic of Congo and sent observers and chemical weapons inspectors to the Syrian Civil War.

  43. Worst loss of life in its history

    2010Haiti

    In 2010, the organization suffered the worst loss of life in its history, when 101 personnel died in the Haiti earthquake.

  44. Systemic failure

    2013U.S.

    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".

  45. Sustainable Development Goals

    2015New York City, New York, U.S.

    The Sustainable Development Goals were launched in 2015 to succeed the Millennium Development Goals.

  46. First public debate between candidates for Secretary-General

    2016U.S.

    In an effort to enhance transparency, in 2016 the organization held its first public debate between candidates for Secretary-General.

  47. Ninth Secretary-General

    Sunday Jan 1, 2017New York City, New York, U.S.

    On 1 January 2017, Portuguese diplomat António Guterres, who previously served as UN High Commissioner for Refugees, became the ninth Secretary-General. Guterres has highlighted several key goals for his administration, including an emphasis on diplomacy for preventing conflicts, more effective peacekeeping efforts, and streamlining the organization to be more responsive and versatile to global needs.