Playing 1.11, crippling dificulty, huge galaxy. The Drengin declared war on me, and I commenced handing them their ugly green bottoms, as they never had a chance. I don't question the war declaration - the Drengin got shafted in the colony rush, and my empire bisected theirs, putting most of it under potential cultural threat. And I'd just gobbled up the Carnoids, so I can see where they would feel pre-emption might be a good idea.
But about halfway through the war, after I had near total space supremacy and
no unprotected planets, they launched about a half dozen full, unprotected transports. I know that they were full, because the population on several Drengin planets went from billions to millions in one turn. Of course I blew them all up with no trouble at all.
I've never seen anything that insane before - even when the computer liked sending out unescorted transports, there was usually a juicy, unprotected world they were apparently going after. In this case, the computer's action can only be described as mass suicide.