The League of Nations Union (LNU) was an organization formed in October 1918 in Great Britain to promote international justice, collective security and a permanent peace between nations based upon the ideals of the League of Nations. The League of Nations was established by the Great Powers as part of the Paris Peace Treaties, the international settlement that followed the First World War. The creation of a general association of nations was the final one of President Woodrow Wilson's Fourteen Points. The LNU became the largest and most influential organisation in the British peace movement.[1][2] By the mid-1920s, it had over a quarter of a million registered subscribers[3] and its membership eventually peaked at around 407,775 in 1931. By the 1940s, after the disappointments of the international crises of the 1930s and the descent into World War II, membership fell to about 100,000.[4]