Look at the Palestinians, who are a conquered people by anyone's definition. The Israelis have ruled them with an iron fist for decades, and they're STILL resisting, still fighting the last war. I don't think there could be any enforced peace or occupation. It's not like conquering Germany, where they give up and everybody is friends in a couple of years. We either have to let them win or kill every single one of them.
I have a great deal of respect for any culture this mean.