From CNN Segment Producer Elberta McKnight:
A new threat surfaced last week that is believed to have come straight from Osama bin Laden. In it, he vows to execute Americans if Khalid Sheikh Mohammed is executed. Mohammed is about to stand trial, accused of being the mastermind of the 9/11 terrorist attacks.
Peter Bergen is one of the few Westerners to ever interview bin Laden face-to-face. He is CNN's National Security Analyst.
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