I'm afraid we haven't seen true horror in this fight that will never end until one side is completely annihilated.
It's kinda ironic that back in the 600s, when islam launched its assault on Christian lands and for almost a century after, people had the will to wipe out cut off the death cult at its root, but not the capability. Now the civilized world has the capability, but not the willpower.
Note that I'm not advocating the annihilation of the people, but rather the religion. A lot of those people are to be pitied as they know no other life than that of islam.