Lazs:
"to ignore japan means you ignore a whole set of variables.. any change in direction with japan has a huge ripple effect that you can't predict. What would we do if japan did not go to war with us? if they retreated back to their island and were happy with their situation? What if they didn't and didn't have germany's help? what if.. what if... what if... ad nauseum."
Ignoring, - no. I listed them as a part of the possible big-blocks.
Japan would have gone on with the conquest of the SE Asian area had they posessed the material for it IMHO. That includes parts of the USSR.
They made war with the USA and the UK exactly because they did not accept the idea of "retreating to their island".
Their plan was to cripple the US naval power for some time, and by conquest get the British out. Thereby, Japan would have owned resources in such a scale that the US could not easily have bent them. Grab, then meake peace, - much like Hitler was thinking of in 1940.
Bear in mind, that the "what if" there was not far from the mind of many a thinker in the US. "What if the British loose in Europe?" This Position is more than a year before Pearl Harbour!
I have to dig in the books to see the dates of desicions, but with the Brits out of the game, and then with the US embargo rather ineffective, there was no reason for Japan to try their luck with the USA.
But they were forced down to 2 simple desicions. Abandon the Chinese campaign, or make war with the British and the USA.
Since the British were in the way, and already in trouble, the bigger desicion was with the USA. So there was the chance of getting luck with a K.O....
Nauseum? why? Too much thinking?
And here:
"Like I said.. alternate history is fun but only as a fictional tool for a book or series of books"
Fun, yes I agree. But I think it is also one big tool to teach us that we can possibly learn from History. It is a challenge for drawing conclusions from data brought afterwards, with lots of information and scrutiny not avalable at the time. "Fun" from comparing what we now know to the 2 other factors, what people thought and planned at the time, and what actually happened.
So, I'd say that Alternate history is a tool to learn about what is yet to happen as well....
Anyway, Lazs, are you well in on the Pacific war? I alwaysthink that our Russky friends completely underestimate the vast warfare that was going on there. So, to emphasize what I said before, I do not ignore Japan as a fprce, just play with the position and alternatives. But IMHO our Russian friends seem to "discard" the weight that the UK and USA put on the scale. It is as if WW2 was the eastern front only, while the rest was some engagements and mistakes. Pisses me off....