I think the movie has become quite relevant since recent events, both from the angle of the US-russian relationship, which was the cause, in the movie, of both the US and russia building such a system. And it is also now relevant from the angle of AI taking over the world.

I like the basic plot of this movie more than the one of Terminator where the AI is depicted as pure evil. The AI in this movie is aligned with some human goals but deprioritizes other goals, much to the dismay of the humans.

Or maybe it's also just part of a ploy to kill all humans, we don't know because there has never been a part 2 :).