Will the Paris Olympics be a terrorist target? These three factors could be key

In recent months, Islamic State has escalated its calls to attack sporting events in Europe. Governments are increasingly concerned about the specific threat the terrorist group poses to the upcoming Paris Olympics and Paralympic Games.

But how concerned should we be? While definitive answers on the dangers posed by clandestine actors are inherently hard to get, there are three important factors to look at: intent, capability and opportunity.

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