Osama Bin Laden Dead - Accuracy of DNA Testing - Popular Mechanics
"When President Barack Obama made his dramatic Sunday night announcement that U.S. forces had located and killed Osama bin Laden inside Pakistan, one of the first questions many asked was: How could U.S. officials be so sure it was really bin Laden?
The answer came quickly. While the body was identified through photos and by bin Laden's wife, it was also the seemingly incontrovertible proof of DNA that gave officials such ironclad confidence in the dead man's identity. "Now, we can say with 99.9 percent confidence that this was bin Laden," John Brennan, assistant to the president for homeland security and counterterrorism, said Monday.
So why not complete confidence? While the body recovered from Pakistan is almost certainly bin Laden, a 100 percent identification is tougher than one might think."
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