The silence is deafening

"I understand the reluctance of the administration to release these men to, say, Yemen, even though I back the release of all who have no credible evidence against them. If Obama is using torture-procured evidence to keep these prisoners in jail, then that evidence is ipso factoincredible. But there are some, I fear, caught in the middle. I'm with Glenn on the need to try or release. I'm just aware how difficult that can be, if national security is put at risk." — Andrew Sullivan

No. One released Yemeni who is subsequently rounded up on the field of battle registers as the merest blip in terms of national security. However, it is a catastrophic PR disaster. What's keeping those men from their right to a trial is political expediency.