Here's the problem...
How do you wage peace when you have an enemy that is absolutely intent on war?
Some might say that doves are absolutely incapable of doing anything but running from a fight, but if you look at a dove's feet you can still see claws, and you yourself said that you are not a pacifist.
When does a Department of Peace say that it's time to go to war? Here's a hint - the answer cannot be "never".