It is a single volume that contains all five of the former volumes...and has been updated since the original writing:
The bottom line is that the story tries to portray the potential very real and grave dangers we face in today's geo-political climate...and to do so in what is hopefully an exciting and engrossing read.
And...for Freepers, the ebook is free.
Just bounced around the PDF. I see why you posted the recommendation. Got it, I'll read it.
Thanks for the post I've just scanned the ebook and have saved it. Thanks again!