In a fair trial, it will be necessary to prove the direct responsibility of the accused for what happened. That is a very different matter. Let him go through the list of UN member states, and count those which, over the last 50 years, have qualified. It makes depressing reading. I am merely sorry that he devoted so much space to knocking down claims I did not make and in which I do not believe.
Rhetoric is no substitute for reason.
Polemics may be good politics, but they do little to advance the cause of justice - or truth. A dispassionate debate is not easy on such an emotive topic, but it is surely what Cambodia needs. All rights revert to authors and artists on publication.