Overkill ((CYOAH! Redux)

Praetorian Ships pour into the Promethean Territories, laying waste to their systems. Prometheus has fallen. Praetoria now stands tall on the Galactic Playing field, having nearly doubled in size. Centrian and Meridian fleets arrive to find the Praetorian Forces already well entrenched in the Promethean Space. They are forced to leave, as assault on the Praetorian Defenses would be tantamount to suicide. But... what to do with the Prometheans? They have already attempted to rebel twice, and lost billions of lives in the process, but they don't seem to get it. What should be done? As the diplomat that facilitated the spectacular rise in fortunes, you are given this decision.
 * Exile
 * DMZ
 * The Final Solution.