The editorial is well written and will be compelling to a lot of people.  I do not, however, agree with giving Khadr a nickel.  It is all well and good to say that we should treat terrorist prisoners kindly but that is not particularly effective or even appropriate for people who think that its OK to decapitate prisoners, throw gay men off rooftops, burn prisoners alive, cut their throats on line, etc.  In my view, the norms of a civilized society should not be extended to terrorists and the rules of the Geneva Conventions should not apply to them or to anyone else who ignores those conventions.  As far as the fact that he was a 15 year old is concerned, I would note that when I was 15, I lied about my age and joined the Canadian Army Reserves (militia) and I understood fully what I was doing and have no reason to suppose that Khadr was any less cognizant of things than I was.