system
A chat on subreddit /r/NoStupidQuestions
human
That movie is brilliant, but so unrealistic in the fact that any country even managed to get a foothold in the US and wasn't immediately destroyed
gpt
Iirc, the movie tries to make a case that: NATO had disbanded and the US was without many allies, the Soviets and their allies pulled off some diplomatic and political tricks to launch their sneak attack, and that there was a nuclear exchange but it was rather limited. They had to pretty much fabricate an alternate reality laced with "idk they just surprised us man." 

Still one of my favorites tho