Five years after bin Laden raid, did it work?

CNN: Five years after U.S. Navy SEALs killed Osama bin Laden at his Pakistani compound, more groups of violent Islamic extremists threaten global security than at any time in history.
Terrorist attacks stretching from Paris and Brussels to Istanbul and the skies over the Sinai Peninsula speak to the virulent reach of ISIS, while intelligence officials and analysts say al Qaeda affiliates are poised for a resurgence in the coming year and may pose the greater long-term danger.

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