How Ali Soufan, an FBI agent, got Abu Zubaydah to talk without torture.

The arguments at the CIA safe house were loud and intense in the spring of 2002. Inside, a high-value terror suspect, Abu Zubaydah, was handcuffed to a gurney. He had been wounded during his capture in Pakistan and still had bullet fragments in his stomach, leg and groin. Agency operatives were aiming to crack him with rough and unorthodox interrogation tactics—including stripping him nude, turning down the temperature and bombarding him with loud music. But one impassioned young FBI agent wanted nothing to do with it. He tried to stop them.

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