I remember as a child watching an anime movie on tape between 89-91 when I was 7-9 years old. I think it was set in outer space and there was some kind of war (I remember that there were a couple of war scenes with spaceships).
I only remember two characters, a red haired man (short spiky/bushy hair) and a white/silvery haired man (long straight with or without bangs) that were friends. I think the red haired man was a leader of some sort. I mostly remember the ending. The two men were standing in a cave of some sort with a cliff. The ground was orange/brown. The white haired man had a gun, but I can't remember if he was was aiming it on the red haired man or if it was hidden. They stood a distance from each other and spoke for a while, then the red haired man turned his back on the white haired man and started to walk away. The white haired man then shot him in the back and he fell down the cliff. I then remember the white haired man later sitting in a conference room briefing his superiors/colleagues and looking very sad.
I just remember being so shocked by the ending. I thought that the red haired man was the hero and I couldn't believe that he got killed. Since I didn't really understand the language I might have gotten the story wrong. He might have been the villain. The thing is that I'm from Iraq but raised in Sweden. We went back to Iraq between 89-91 where I saw the movie. I only spoke Swedish at the time so I don't know if the movie was in English or dubbed to Arabic. The funny thing is that it was my older brother's tape, but he has no recollection of seeing that movie.