This is of the top of my head to the topic. I have not read anyone else comment so i can get this straight out to you [@Fear]. 
I live In New York City, Everyone here feels for Paris and the other countries who were attack. (I speak for the people i know in New York City) The Only thing humans know is war. Its life and to live things have to die. In this case isis want to spread fear to other countries. Doing their best by staying in the news one way or the other. This either makes people want to join them or kill them the American way of course. Back to the point, sorry about that. If ISIS didn't attack/kill/destroy they would fade and lose member's. Its a struggle of trying to live. All of these things/problems comes from trying to stop the problem. I hear ISIS was made because of the war back in 2001. Most Americans believe the war was for oil and the spread of Isis was the effect of the war. (i might of lost my point) Anywho Everything happens for a reason. The people of Isis might have a real reason to hate the world. I think the best way to deal with Isis is to completely ignore them. Let the people who started this mess duke it out. (Just my opinion on the topic, I hope i didn't piss anyone off)(by the people i mean We the problem starters and all of the corrupt government/leaders at that time.)