OK, so I played two games all the way through as the TEC and both times won with a message of "Peace is restored."
In the first case I eliminated everyone except one AI with whom I had a peace treaty. So I figured that you have to kill or make peace with everyone.
In the second case, I elimated all but two AI's, both of whom I had a peace treaty with. However, it didn't end right away as I thought. It seemed that they were still fighting each other, so I guessed that means EVERYONE has to be at peace. In any case, I said, to heck with it and started trying to completely destroy the weaker of the two. I started at it, and not long into my campaign (before I even took one world) I got the "Peace is restored" winning screen.
So, the game ended in the mist of my war with one of the two.
What, exactly, are the victory conditions? Does the computer calculate a win when you (for example) take a majority or the worlds?
Please help. Thank you.