The League of Nations was by this time scarcely even a paper tiger, devoid of credibility since its divisions and pusillanimity had been so clearly laid bare following Mussolini's invasion of Abyssinia in the autumn of 1935.
If you say that an institution, a country, or a person is a paper tiger, you mean that although they seem powerful they do not really have any power. One that is seemingly dangerous and powerful but is in fact timid and weak: "They are paper tigers, weak and indecisive" (Frederick Forsyth). an enemy or opponent who seems powerful but actually is not
the nature of a person or organization that appears powerful but is actually powerless and ineffectual; "he reminded Mao that the paper tiger had nuclear teeth