I apologise if this has been asked before, but I couldn't see it anywhere I know that before Pearl Harbour, Stalin was reluctant to move his siberian troops away from defending his eastern frontiers in case the Japanese attacked. If Japan had indeed attacked Russia instead of America, how big an effect do you think this would have had? America may not have entered the war, or her entry would have been delayed. Russia would have been fighting a war on two fronts, and Germany might have been able to take Moscow. Of course, the Japanese oil supply was a big issue, but if their attack meant Germany could reach the caucasus, perhaps they could have shared some of the oil? What do you all think?