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United Nations Poster, "Charter of the United Nations" 1945

President Franklin Roosevelt was committed to U.S. participation in an international peace organization. To avoid challenges faced by President Wilson, President Roosevelt was careful to build bipartisan support for Senate approval by including influential Republican Senator Arthur Vandenberg as a delegate to the United Nations Conference in San Francisco. The U.N. Charter was signed on June 26, 1945A month later the U.S. Senate overwhelmingly approved it.

Records of the Office of Government Reports, National Archives and Records Administration, Washington, D.C.

United Nations Poster, "Charter of the United Nations" 1945

Promoting International Peace

The Treaty of Versailles, negotiated at the end of World War I, included provisions for a League of Nations—an international organization to promote peace. Although President Wilson campaigned aggressively for U.S. participation, some members of Congress firmly opposed involvement, and the U.S. Senate did not consent to ratify the treaty. Not until 1945, with the creation of the United Nations after World War II, did the U.S. join an international organization to promote cooperation and peaceful resolutions of conflict.