A German expert who evaluated six Minnesota men who pleaded guilty to trying to join the Islamic State group has developed counseling plans for each of them aimed at keeping them off the path of violence. He has also trained 20 to 25 local probation officers in his techniques. Daniel Koehler, who directs the German Institute on Radicalization and De-radicalization Studies in Stuttgart, sat down with a small group of reporters Wednesday to discuss his work. He was joined by the chief U.S. probation officer for Minnesota, Kevin Lowry. […] Minnesota is the first place in the U.S. to try...