ISIS has ticked-off the good and the bad among the Americans, the Russians, and the Europeans.
And, there is of course the One True GOD whose family members they have martyred. He has a very specific response for His vengeance:
“’…when I sharpen My flashing sword and My hand grasps it in judgment, I will take vengeance on My adversaries… I will make My arrows drunk with blood, while My sword devours… the heads of the enemy leaders.’
Rejoice, you nations, with His people… He will take vengeance on His enemies and make atonement for His land and people.”
~ Deuteronomy 32:41-43