Mabey if the japanese had not attacked pearl harbor they and the germans would have been able to fight russia without interference from the usa, japan from the sparcly populated east and the germans from the west. the japs could block all supplies coming into russia,oil, food which was also in shortage. i doubt that the russians could hold a two front war and succeed if the axis planned it well, but it would have been a timing and resource thing. the japs would have been better ov invading russia and asia minor rather than wakeing the beast of usa with their isolation policy after ww1 dunno just a theory.