A former Yemeni prisoner at the Bagram prison in Afghanistan, dressed in an orange prison uniform, protests in front of the U.S. Embassy in Sanaa, Yemen, on Tuesday, April 16, 2013, to  demand the release of Yemeni detainees in the Guantanamo Bay prison. (AP Photo/Hani Mohammed)

Photo by: Hani Mohammed

A former Yemeni prisoner at the Bagram prison in Afghanistan, dressed in an orange prison uniform, protests in front of the U.S. Embassy in Sanaa, Yemen, on Tuesday, April 16, 2013, to demand the release of Yemeni detainees in the Guantanamo Bay prison. (AP Photo/Hani Mohammed)