united states just deployed f-16s and hundreds of military personnel to turkey to help in the fight against isis along that syrian/turkey border. is there any connection anyone is making between the deployment and the violence? >> reporter: well, it's not clear at this point but certainly isn't out of the question, kate. one of the things we have seen in the past is that group like the one responsible for the attack on the consulate, they are calling for the people in the middle east and the entire world. so there is animosity among the left-wing groups against the united states. at the same time, look at the turkish security environment as well. turkey aside from the u.s. using that base to launch attacks against isis also ramped up their campaign against isis. and, at the same time, against left-wing kurdish rebels. there have been attacks on turkish soldiers and bomb attacks in turkish cities. so there's a whole security situation