“Forgiveness ends the dream of conflict here.”
Conflict arises when priorities clash. What other priority could you possibly have than Peace, Joy and Freedom for all? And so it becomes a matter of knowing how to fully embrace that single priority.
The answer, the Course teaches, is forgiveness, because forgiving is the way to set the world free and allow your inner Light to free you from the mistaken notions that were projecting these images.
Mistaken notions, when you believe them, cause you to adopt conflicting priorities. When there is confusion and conflict, it is a sign that you have somehow landed in the middle of a misunderstanding. Since your confusion tells you that something is wrong, you will then hold on even more tightly to what you think you do know. However, the dissolution of the misunderstanding will only come when you let go of your rigid grip, when you set the images free from your notions about them, when you forgive.