Abdul Qadeer Khan, the Pakistani scientist who shared nuclear secrets with Iran, North Korea and Libya, was released from house arrest today. (Via Abu Muqawama.) I’m sure that he will be under close surveillance by Pakistan’s ISI, but it’s a little terrifying to think of him out on the street nonetheless. Check out this graph from the New York Times a couple months ago that describes the path of nuclear proliferation. Pakistan is the new center.