Saving the league: V.K. Wellington Koo, the league of nations and Sino-Japanese conflict, 1931-39

In 1919, VK. Wellington Koo, the most famous Chinese diplomat of the early twentieth century, participated in the creation of the League of Nations at the Paris Peace Conference. Little over a decade later, as Japanese forces expanded into Manchuria and North China, Koo struggled to save the League he had helped found. He argued that inability or refusal to brand Japan as an aggressor would sound the League's death knell. In vain, Koo tried to convince European statesmen that the Far Eastern Crisis was a litmus test of the League's viability as a collective security organization. From 1936 on, League inaction in the face of Japanese, German and Italian expansion left Koo thoroughly disillusioned. The lessons of the League were not forgotten during World War II, when Koo argued that a more effective collective security organization, in the form of the United Nations, be created on a basis similar to Franklin D. Roosevelt's Four Policemen concept.