Because one biological or chemical bomb does not destroy the entire US.
What's more likely is America steps up production of it's own supply and wipes out the population of the 500 largest Japanese cities.
Yeah. Actually, it's less than a day old. The whole "constitution" date is the planned date (It's a Sunday), but we have not reached it yet.
Like this, yeah. I may come back to it and do an infobox for the 10+ year period.
Those Russian nukes? After the breakup of the USSR? They all go to Russia. Russia will quite literally tell China to fuck off, and unless they want every Chinese city glassed, they will oblige.
Korea could not beat Russia. Not in it's state at the time the Russian's came through.
Even if they did hold this "Outer Manchuria" of which I think you mean Primorsky Krai.