System Perimeter: Judgement Day machine or the dead hand of Moscow [english subtitles] 

The main point of the "Perimeter" is really to calm down own leadership and give them insurance that retaliation is inevitable and they can even delegate a difficult decision to a system. All within "mutual assured destruction" strategic paradigm. Thanks to such strategy we never arrived to the hot WW3. The fact that it was always kept secret is one of the arguments that "Perimeter" was mainly a deterrent for domestic leadership, not NATO.

the nuclear trains do exist. Knew it.

Scary but necessary I believe.

The logic is correct only if the 'enemy' know about it, not the details just the result.

Are we this weak to temptation? This wasn't smart at all. This is greed all the way.. pride and greed will kill us all

I wonder what they have today, /gulp living in America is not good after all.

Complete bs. They knew about it in the early 80s and a papper was written on it yet they make claims that "no one thougt it was possible"