Charter of the United Nations
The Charter of the United Nations – signed by 50 countries, on 26 June 1945, in San Francisco – is the foundational treaty of the United Nations. This new international organization was established after World War II in order to maintain international peace and security and to achieve cooperation among nations. Its forerunner was the League of Nations, established in 1919 for the same reasons, but it proved incapable of preventing World War II. The Charter of the United Nations is a constituent treaty, all member states are bound by its articles.