The crash landing of an American reconnaissance drone struck by a Russian warplane and downed over the Black Sea is further rattling US-Russia relations. It’s unclear whether the incident was an error or a deliberate action. And, US law enforcement is taking some new steps against espionage and intellectual property theft on university campuses. But these measures are putting some researchers at the Massachusetts Institute of Technology in Cambridge on edge. Also, years of war interrupted and undermined Iraq’s music scene. Now, relative stability has created a space for its revival. Plus, saving the Maori language through music.