"President Barack Obama is about to release or transfer 55 Gitmo prisoners, despite reports that the Libyan believed to be behind the killing of US Ambassador Christopher Stevens was a former Guantanamo inmate transferred to Libyan custody.
The large percentage of those scheduled to be released are Yemeni, according to a list made public by the Obama administration."
http://www.breitbart.com/Big-Peace/2012/09/22/Obama-to-Release-One-Third-of-Gitmo-Inmates
That and the AQ prison outbreaks.