At the age of 18, a Yemeni man named Mansoor Adayfi says he was traveling in Afghanistan when he was kidnapped and sold to the CIA by Afghan warlords. The U.S. government had distributed flyers across the region offering bounties in exchange for "suspicious people."

He became "Detainee 441" and was held without charge at Guantánamo Bay Detention Center for 14 years until his release in 2016. Adayfi tells his story in his new memoir, "Don't Forget Us Here."

President Barack Obama signed an executive order to close Guantánamo Bay in 2009. Twelve years later, it remains open, with 39 detainees. A tribunal will begin hearing the case soon of five of those men who are accused of being involved in the 9/11 attacks. Much of the evidence is tainted by torture.

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