So you think the Middle East was an awesome, problem free place before September 11, 2001? At a minimum, you have to go back to Sykes-Picot, but it's really way before that.
Also, ISIS was the result of our untimely departure from Iraq (I wonder if the same thing will happen in Afghanistan?) Yes, Obama inherited it, but that doesn't give him carte blanche to f**k it up. The ISIS leadership were former AQI who developed their network in the Bucca prison camp and were released following major US withdrawal in 2011.