Re: Are there any science fiction books about this?
You raise an interesting question, Pazma. I have been reading and writing science-fiction for over 50 years, so a I have a pretty good memory bank of stories (hard to remember them all though).
I do recall a story about neighboring planets who were also kind of rivals. They did have space travel, but not FTL or interstellar. Sorry, I can't rememberr the title.
I would try going back to some collections form what is called the "Golden Age" of science fiction. Let us know if you find something.