you recall earlier this year, a man by the name of mohamed abdulaziz killed five people at a couple militaryitment centers. and he said that that has now been determined to be a terrorist attack that was inspired by foreign terrorist propaganda. we know from talking to sources that the attacker there was being inspired by anwar al awlaki, the yemeni cleric who was killed in a u.s. drone attack. this is obviously now at the top of everybody's mind going into the christmas season, the holiday season. the concern about terrorism. john and kate? >> all right. evan perez for us in new york. obviously some news made there. the direct messaging between the san bernardino terrorists, very interesting because the idea that social media, that something had been missed, did come up here in the debates last night. thank you, evan. >> a big part of the conversation and what to do about that going forward for sure. >>> also coming up for us, a lot more ahead. the road to the republican presidential nomination just got a little bit shorter after last night. the first votes in the nation, iowa caucuses, the