Why was this cartoon published?

The two men fighting in the background are supposed to represent Japan and China in the Sino-Japanese War, which started in 1937.  This war was a continuation of another Japanese incursion into China in which Japan took Manchuria in 1931.  The League of Nations protested that one and Japan allegedly left Manchuria, but in reality established a puppet state there.  Japan launched another attack against Shanghai under the false pretense that China attacked first.  Japan's...

The two men fighting in the background are supposed to represent Japan and China in the Sino-Japanese War, which started in 1937.  This war was a continuation of another Japanese incursion into China in which Japan took Manchuria in 1931.  The League of Nations protested that one and Japan allegedly left Manchuria, but in reality established a puppet state there.  Japan launched another attack against Shanghai under the false pretense that China attacked first.  Japan's attack into China in 1937 was a violation of League of Nations policy and a violation of the Open Door policy which America helped broker in 1900.  The League of Nations' members were primarily European nations who did not want to engage in a war in Asia and were too worried about Hitler who had just militarized the Rhineland in 1936 and Mussolini who just invaded Ethiopia the same year.  The men in the top hats represent the League of Nations' officials who hope that Uncle Sam (the United States) will step in and broker a peace between China and Japan so that the fight does not leave the room and become a major war.  Uncle Sam appears to be rumpled and not up to the task in this cartoon.