It is complicated that's why people need to stop parroting the simplistic nonsense of the mainstream media and throwing bombs when they don't even know what's going on over there. Donald throws bombs b/c he was "emotionally affected" by pics of children in Syria but meanwhile the U.S. just killed 200 innocent civilians, including women and children, on bombing mission in Mosul last week. That's not horrific?  https://www.nytimes.com/2017/03/24/world/middleeast/us-iraq-mosul-investigation-airstrike-civilian-deaths.html