I have no idea how it took me this long to question this but....where did the "neural implants" come from? That is how the new big bad is spying on people...but where did they come from? Was this something that everyone already had from before and the big bad is just tapping into it? Were these implanted somehow, and for some reason, during the first war? Was this addressed before now or in the last book and I just missed it?
It's kind of bugging me now, I suspect convenient plot device.