[Terror_666]

I am looking for a specific fictional documentary about WWIII.
I saw half of it years ago and would like to see it again.
From what I can remember of it, it was made like a discovery channel documentary.
It followed from beginning to end how a war escalated until in the last scene the soviet union and the US launched there ICBM at each other. At this point the narrator said something like "and this is were history ends."
If anyone knows the name of this film or where I might find it I would be very grateful.