John power

"Okay, so… just so we know, how do you deal with a Dog of War or any of its variants?" Verona asked.

"By putting a bullet in them, or some other means of execution, after cutting them off from their power source."

"How do you cut them off?"

"Draw a circle around them. I can teach you the basics of binding Others at a later date. With John, don't bother trying. The act of finishing the drawing of the circle gets harder the greater the source of power is. His source of power is a big, long-running conflict with no sign of ending, even if Canada pulled out six years ago. Like a large body of water with a narrow hole feeding out the bottom to this particular output, the pressure is immense and the stream violent. You're not positioned to put that conflict to rest and you're not equipped to close a circle."

- Lost for Words 1.4