I've just got the game and played a few small games where the opponents obligingly declared war on me. In this game the Arconians are streaking ahead and I need to attack them to cut them back. But I can't!
The dialogue window has an "Attack" instruction but the Arconians name doesn't appear when I select it. I'm guessing it's because they're too friendly. I didn't do anything to make them friendly. I only want to hate and kill them. But my ships won't fire on them.
Haven' these guys ever heard of Pearl Harbour?