Torture Abroad

It's rare to see an in-depth story on international affairs on the evening news, so I was delighted to see Brian Ross' report last on ABC News. Ross, with the help of Richard Esposito, gave the most thorough look I've seen so far on the question of whether the CIA has been using secret prisons in Europe to torture terrorism suspects. Ross said current and former CIA officers told ABC that 11 top al Qaeda suspects were held in Poland and Romania until Human Rights Watch exposed their existence. The prisoners are now being held in North Africa, Ross reported. The story gives me pause because it relies heavily on anonymous sources, but I'm not sure if there's a way to avoid that when dealing with the CIA on such a contentious issue.
http://abcnews.go.com/WNT/Investigation/story?id=1375123