Quote:It was an innocuous e-mail, one of millions sent every day by spouses with updates on the situation at home. But this one was of particular interest to the National Security Agency and contained clues that put the sender's husband in the crosshairs of a CIA drone.
Days later, Hassan Ghul an associate of Osama bin Laden who provided a critical piece of intelligence that helped the CIA find the al-Qaeda leader was killed by a drone strike in Pakistan's tribal belt.