Awesome game!
I never thought about how icbm sites operated before, especially the ability to launch missles on their own... scary stuff!
Also loved the Cyrillic text, I speak Serbian natively, so I could read most of it!
Yes. Unfortunately Perimeter does exist and it is rumored that is still in use (even if it is probably not as silly as I depicted it). If you want to know more I recommend to read the book:
The Dead Hand: The Untold Story of the Cold War Arms Race and Its Dangerous Legacy by David E. Hoffman
I hope I wrote everything correctly in Cyrillic :)