In my current game, I had an interesting situation. An alien geosurvey ship came through a jump point I had mined. The mines launched their missiles, but I caught them and destroyed them before they hit. The question is, did I suffer diplomatic penalty because of that? If so, how much? I'm not against going to war with them, but I'd rather not do it earlier than I have to. Still, if they think I committed an act of war, I might as well follow through and do the real thing.