On Tuesday, we learned that Somali pirates killed four Americans aboard a yacht the pirates seized from the two couples. So what is being done about the piracy problem? How bad is the problem? What would work? And what won’t work? We discuss it all with Martin Murphy, author of “Somalia, the New Barbary?: Piracy and Islam in the Horn of Africa”. He is also a visiting fellow at the Corbett Centre for Maritime Policy Studies at King’s College in London.