This rather serious report should be of interest to LW. It argues that autonomous robotic weapons which can kill a human without an explicit command from a human operator ("Human-Out-Of-The-Loop" weapons) should be banned, at an international level.
(http://www.hrw.org/reports/2012/11/19/losing-humanity-0)
I wanted to paste all four of the Human Rights Watch's recommendations here explicitly from Page 10 of their report, since that seemed like a helpful thing to have for reference and debate: