"...reality is that the way you deal with the Islamic State (caliphate), these bloodthirsty, blooddrunken terrorists is to kill them, keep on killing them until you kill the last one... then you kill his pet goat. THAT's how you deal with them!"
Col. Peters is right.
Once they started hanging pirates, piracy stopped. Pirates were just in it for the loot.
Almost all of the Nazis went back to normal life after Hitler was dead and the war was over.
Muslim brainwashed killer zombie mutant humanoids (like we see in the Islamic State) will not be deterred with less than a bullet through their brain housing unit.