We have been siding with strangers there for years, arming them and watching our armaments end up in evil hands.
We have craved "the Arab spring" forever. Ironically, Iran held democratic elections in the 50's, but the guy who won had the nerve to talk to the ussr about selling them some oil. So the CIA overthrew him. We installed the Shah and we wonder why they don't like us. The west, largely europe, has messed with the middle east forever and now we deal with this cesspool of evil ideas using our technology to scare us all. How does this end? We can kill isis like we killed al queda. Then what takes their place.