Year
1945
Month Day
June 26

U.N. Charter signed

In the Herbst Theater auditorium in San Francisco, delegates from 50 nations sign the United Nations Charter, establishing the world body as a means of saving “succeeding generations from the scourge of war.” The Charter was ratified on October 24, and the first U.N. General Assembly met in London on January 10, 1946.

Despite the failure of the League of Nations in arbitrating the conflicts that led up to World War II, the Allies as early as 1941 proposed establishing a new international body to maintain peace in the postwar world. The idea of the United Nations began to be articulated in August 1941, when U.S. President Franklin D. Roosevelt and British Prime Minister Winston Churchill signed the Atlantic Charter, which proposed a set of principles for international collaboration in maintaining peace and security. Later that year, Roosevelt coined “United Nations” to describe the nations allied against the Axis powers–Germany, Italy, and Japan. The term was first officially used on January 1, 1942, when representatives of 26 Allied nations met in Washington, D.C., and signed the Declaration by the United Nations, which endorsed the Atlantic Charter and presented the united war aims of the Allies.

In October 1943, the major Allied powers–Great Britain, the United States, the USSR, and China–met in Moscow and issued the Moscow Declaration, which officially stated the need for an international organization to replace the League of Nations. That goal was reaffirmed at the Allied conference in Tehran in December 1943, and in August 1944 Great Britain, the United States, the USSR, and China met at the Dumbarton Oaks estate in Washington, D.C., to lay the groundwork for the United Nations. Over seven weeks, the delegates sketched out the form of the world body but often disagreed over issues of membership and voting. Compromise was reached by the “Big Three”–the United States, Britain, and the USSR–at the Yalta Conference in February 1945, and all countries that had adhered to the 1942 Declaration by the United Nations were invited to the United Nations founding conference.

READ MORE: FDR, Churchill and Stalin: Inside Their Uneasy WWII Alliance

On April 25, 1945, the United Nations Conference on International Organization convened in San Francisco with 50 nations represented. Three months later, during which time Germany had surrendered, the final Charter of the United Nations was unanimously adopted by the delegates. On June 26, it was signed. The Charter, which consisted of a preamble and 19 chapters divided into 111 articles, called for the U.N. to maintain international peace and security, promote social progress and better standards of life, strengthen international law, and promote the expansion of human rights. The principal organs of the U.N., as specified in the Charter, were the Secretariat, the General Assembly, the Security Council, the Economic and Social Council, the International Court of Justice, and the Trusteeship Council.

On October 24, 1945, the U.N. Charter came into force upon its ratification by the five permanent members of the Security Council and a majority of other signatories. The first U.N. General Assembly, with 51 nations represented, opened in London on January 10, 1946. On October 24, 1949, exactly four years after the United Nations Charter went into effect, the cornerstone was laid for the present United Nations headquarters, located in New York City. Since 1945, the Nobel Peace Prize has been awarded more than ten times to the United Nations and its organizations or to individual U.N. officials.

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