and have entered a sort of hostage situation. what does this have the hallmarks of for you? >> unfortunately it has the hallmarks of many of the other attacks that we have been speaking about, we have seen about 31 vehicular terrorist attacks, we have seen recently a number of attacks like this happening in europe. we don't know what organization is behind this but this has some of the hallmarks of what isis has been calling on individuals to do. i don't want to speculate. >> shepard: pardon the interruption, rex tillerson speaking now on this attack in spain. >> the injuries that have occurred to somebody and innocent people yet again, we will continue to monitor the situation.