From a reader (note: I haven’t checked this for accuracy yet):
In “Return of the King” (the book), when the forces of the West are arrayed before the Black Gate for their final battle with Mordor, the Mouth of Sauron (his Messenger) lays down the peace terms:
“…All lands east of the Anduin shall be Sauron’s forever, solely. West of the Anduin as far as the Misty Mountains and the Gap of Rohan shall be tributary to Mordor, AND MEN THERE SHALL BEAR NO WEAPONS, but shall have leave to govern their own affairs….”
Looking in the Messenger’s eyes, they read his thought….HE WOULD BE THERE TYRANT, AND THEY HIS SLAVES.