There was an apologist on the radio this evening suggesting that if an Arab country had given evidence which had resulted in arrest - and didn't want its citizens to know that it was cooperating with the USA on that basis then there was a good reason to withold the evidence. If they had evidence perhaps they contaminated it by torturing people.
Round spherical objects and I am surprised the journalist didn't say so.
Get the people or trial or release them. There are lots of people been released and as far as I know not one has subsequently been involved in anything.