Now then, you can't hold up Star Trek as something to help decide policy in actual space.
If anything "Moon is a Harsh Mistress" is the sci-fi to look to. I don't want to give a spoiler though, but, uh, whoever gets to the Moon first effectively rules the Earth.
That accounts for local space around the Earth, now Alan Dean Foster was the first sci-fi author to point out that war is impossible in space due to fundamental physics. I don't have the time to go into it now but it's not hard to work out once you clear away the mental/emotional dross.
In sum, "war" in "space" is a mental concept not grounded in physical reality. People have been watching too much fiction and are all screwed up in the head in re: the realities of space and physics.
If we wind up with "war" in "space" it will be a kind of theater that the powerful use to cow the naive.