In 2009, a double agent's suicide bombing dealt the CIA its deadliest day in decades
When the CIA invited a high-level informant to a secure base in 2009, they believed they were closing in on Al-Qaeda leadership, but the meeting turned into a devastating security failure.
On December 30, 2009, Humam al-Balawi, a Jordanian doctor believed to be a triple agent, detonated a suicide vest at Forward Operating Base Chapman in Afghanistan. The blast killed seven CIA officers and contractors, marking the agency's deadliest single day since the 1983 embassy bombing in Beirut.
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