Shortly after the Treaty of Versailles ratification, the League of Nations was created in January 1920. It was intended to be an international organization capable of finding peaceful solutions to conflicts between countries. Friendly solutions were made possible through arbitration and the implementation of collective sanctions against recalcitrant states.
Promoted by American President Woodrow Wilson, the approach adopted favored collective negotiation rather than secret diplomacy.
However, the League of Nations had no armed forces of its own and little coercive capacity. As a result, it depended exclusively on the goodwill of the major powers to implement these resolutions.
Despite notable successes, the League of Nations found itself unable to prevent aggression from the Axis countries (Germany, Italy, and Japan) in the 1930s.