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How will ISIS strategy change after Paris attack?
Rep. Joaquin Castro, D-Texas, joins to discuss how Capitol Hill is reacting to the horrifying attack in Paris, and explains how it's also important to pay attention to a social media strategy in addition to a military strategy in the fight against ISIS.
Attacks on Paris
Bataclan reopens on eve of attack anniversary02:05
A history of the terror attacks in France01:07
Paris attack survivor reflects 6 months later03:17
ISIS has head start on Western infiltration11:12
ISIS develops new skill at bomb-making06:53
Paris terror suspect ran a bar, 'sold hashish'03:29