A French soldier patrols near the Sacre Coeur Basilica in Paris, France on November 17, 2015 as security increases after last Friday's wave of of deadly attacks in the French capital. Benoit Tessier/Reuters
A French soldier patrols near the Sacre Coeur Basilica in Paris, France on November 17, 2015 as security increases after last Friday's wave of of deadly attacks in the French capital. Benoit Tessier/RShow more
Paris attacks expose failures, challenges for intelligence services
Despite a case being opened against him in 2012 after an abortive attempt to go to Yemen, one of the suicide bombers at the Bataclan was still able to travel to Syria a year later, raising questions about French security services.