The high contracting parties, in order to promote international co-operation and to achieve international peace and security agree to this Covenant of the League of Nations.
-Covenant of the League of Nations, December 1924
Why was the League of Nations unable to fulfill its purpose?
It lacked the power or military strength to halt aggression.
It lacked a budget to pursue efforts for peaceful cooperation.
It prevented American and British efforts to stop German aggression.
It did not have the ability to extend membership to additional nations after 1924.