Enemies to the west

A knight and his men return to the castle after a long hard day of battle.  "How fare ye?" asks the king.

"Sire," replies the knight, "I have been defeating the soldiers and burning the towns of your enemies in the west all day on your behalf."

"What?!?" shrieks the king. "I don't *have* any enemies to
the west!"

"Oh," says the knight. "Well, you do now."