"I'm increasingly inclined to thing there should be some regulatory oversight, maybe at the national and international level just to make sure that we don't do something very foolish."
http://www.cnet.com/news/elon-musk-we-are-summoning-the-demon-with-artificial-intelligence/#ftag=CAD590a51e
http://www.tandfonline.com/doi/full/10.1080/0952813X.2014.895111
A breakdown of the risks