Thedas
I have no idea what he was intending to do that caused such damage but he has paid his price for it, if I understand dwarven culture. Still, he seems to have found a home and a family with the Chargers.
I have spent time with the men in celebration when it has been appropriate but as I said, I am prone to headaches and too much drink and loud noise makes them immeasurably worse.
I would rather Leliana. She would not only identify the stabber before he or she ever got close, she would have them killed and their employer identified before I even knew stabbing was a possibility.