We speak with Mansoor Adayfi, a former Guantánamo Bay detainee who was held at the military prison for 14 years without charge, an ordeal he details in his new memoir, “Don’t Forget Us Here: Lost and Found at Guantánamo.” Adayfi was 18 when he left his home in Yemen to do research in Afghanistan, where he was kidnapped by Afghan warlords, then sold to the CIA after the 9/11 attacks. Adayfi describes being brutally tortured in Afghanistan before he was transported to Guantánamo in 2002, where he became known as Detainee #441 and survived years of abuse. Adayfi was released against his will to Serbia in 2016 and now works as the Guantánamo Project coordinator at CAGE, an organization that advocates on behalf of victims of the war on terror. “The purpose of Guantánamo wasn’t about making Americans safe,” says Adayfi, who describes the facility as a “black hole” with no legal protections. “The system was designed to strip us of who we are. Even our names were taken.”