But the Geneva Convention requires that if there is a substantial risk of torture or mistreatment, prisoners are not to be transferred. The central problem, it seems to me, is that the evidence would suggest that there was a substantial risk, and indeed you could argue that there is a substantial risk today, given the widespread evidence and widespread reporting of the mistreatment of prisoners either by NDS or by other Afghan prison authorities.
On May 12th, 2010. See this statement in context.