@ShadowHAwk:
Basicaly means japan cannot declare war on russia unless it really wants to screw over germany. But if it doesnt it also makes life hard for germany.
This is one area where an ounce of experience is worth a pound of theory. In most Balance Mod games I have seen, war does eventually break out between Russia and Japan, and, at that point, the Pacific lend lease route becomes the easiest to block (it practically runs through the Sea of Japan–as it did historically).
What the NO does deter are early declarations of war between the two powers. And that is precisely the point. It has the desired effect of giving historically based consequences to an ahistorical situation–namely, Russia declaring war on Japan at the outset of the war, or vice versa. The deterrent is hardly absolute (just ask Gamerman, who has some experience with early RDOWs against Japan. heheh). In the typical case, by mid to late game, the strategic benefits of a DOW between the two powers become too great to resist for one side, notwithstanding the NOs.
Also, there is no reason why the USA should have to be at war with the Axis in order for lend lease’ aid to flow through the Persian Corridor and Pacific Route. The whole point of the US Lend Lease program, initially, was to give aid to the Allied war effort while the US was ostensibly neutral. Requiring USA to be at war as a precondition of lend lease would be grossly ahistorical.
As for the idea of requiring allied control of multiple territories for each lend-lease route, the reason we opted against this was mostly practical: we wanted to keep the basic structure of the lend-lease NO from the OOB game–i.e., one land territory, one sea zone per lend-lease route, for simplicity’s sake.
But it can be justified on historical grounds as well. For example, a substantial portion of the aid that flowed through the Persian Corridor reached Russia’s interior via ship on the Caspian Sea. Allied control of Northen Persia (as depicted on the g40 map) obviously would not be necessary for such aid to continue flowing. Lend lease aid also reached Russia by air. You can read about the Alaska Siberia “Air Route” here: https://en.wikipedia.org/wiki/Pacific_Route#The_air_route. The notion that there needed to be a contiguous land path from whatever entry port to Moscow in order for the lend lease aid to be used by the Russians is simply not supported by the historical record.