[lmm]

How so? Maybe if the USA was healthier and less depressed you'd have joined the war from the get-go rather than staying in bed for the first four years. But even if you'd stayed out entirely it wouldn't have delayed the soviet defeat of Germany overmuch. If you were talking about France's failure to defend Indochina you might have more of a point, but the US doesn't exactly have a great record there either.