first, ben wittes, what ant those cleared to go home or somewhere else. part of political will?part of political will but additional factors. when you clear someone for release or transfer, that's generally not an unconditional clearance, it's not like this person is completely harmless, so let's just set them free. there's usually a clearance conditional on certain security arrangements being made with the country that's going to receive them -- that is, you have to find a country that's willing to receive them, that's willing to treat them appropriately and willing to keep track of them, and those arrangements can be difficult to make, they can be complicated, particularly when you're dealing -- a lot of these people are from yemen. we've had a very hard time getting the yemeni government to make assurances that we can take seriously as to what will happen to people when they come home. >> woodruff: you're saying there are practical reasons why it hasn't happened, not just political? >> each repatriation or settlement takes a very delicate negotiation and set of arrangements a