U.S. Government Releases Second Round of Bin Laden’s Letters, Reveals His Surprising Concerns

The March 1 release of a cache of documents obtained during the raid that ended with Osama Bin Laden’s death reveals some of the Al-Qaeda leader’s strange concerns.

In one letter, Bin Laden writes to his wife, warning her that the dental filling she received in Iran may have contained a computer chip used to track her movements.