Excerpts from Books and Wikipedia
"After Germany signed an armistice in November 1918, Wilson and other Allied leaders took part in the Paris Peace Conference, where Wilson advocated for the establishment of a multilateral organization known as the League of Nations. The League of Nations was incorporated into the Treaty of Versailles and other treaties with the defeated Central Powers, but Wilson was unable to convince the Senate to ratify that treaty or allow the United States to join the League." [Wikipedia]
"As early as 1915, Wilson put forward the unprecedented doctrine that the security of America was inseparable from the security of all the rest of mankind. . . . Convinced that all the nations of the world had an equal interest in peace and would therefore unite to punish those who disturbed it, Wilson proposed to defend the international order by the moral consensus of the peace-loving: . . . This is an age . . . which rejects the standards of national selfishness that once governed the counsels of nations and demands that they shall give way to an new order of things in which the only questions will be: 'Is it right?' 'Is it just?' ' Is it in the interest of mankind?'" [Kissinger: Diplomacy, p. 47, 51]