The end of World War One ruined the Middle East in so many ways it's astounding. Britain really just went in there and it feels they just didn't care.
Back to the main topic, this is just awful and horrible. I hope they manage to capture all those who helped commit this disgusting attack. All these poor innocent people didn't deserve this.
Honestly - this goes back to the Mongols. The Middle East has been adrift ever since the Mongols wiped out the Caliphate - and they've wanted a return back. The Middle East was set to turn on itself based on the Shiite / Sunni / Kurd issue - wouldn't have mattered if we had went in or not.
You don't...want to go down the historical paths that are used to fight ideologies. Not with 21st century weaponry.