US President <a gi-track='captionPersonalityLinkClicked' href=/galleries/search?phrase=Barack+Obama&family=editorial&specificpeople=203260 ng-click='$event.stopPropagation()'>Barack Obama</a> speaks during the Nunn-Lugar Cooperative Threat Reduction (CTR) symposium at the National Defense University in Washington on December 3, 2012. Obama directly warned Syria's President Bashar al-Assad that he would face 'consequences' if he made the 'tragic mistake' of turning chemical weapons on his own people. AFP PHOTO / Saul LOEB