Sources say President Trump may act quickly to impose tariffs of up to 10 on imports. Will that boost jobs or boost the prices that you pay . A man taken off an airliner after verbally harassing ivanka trump and her family on their way to a hawaiian vacation. Im brianna keilar. Wolf blitzer is off and youre in the situation room. Breaking news. New video gives a first look at the horrific truck attack on the berlin market where the massive vehicle plowed into a crowd of christmas shoppers killing a dozen people. As police carry out sweeping raids across germany, were getting stunning details about the suspect. The 24yearold tunisians fingerprints were found inside the truck. Investigative files directly link amri to an isis network in germany and show hed previously discussed launching attacks. He was known to u. S. Intelligence before the truck attack and had been put on a nofly list. President elect donald trump tweeted today that the u. S. Must greatly strengthen and expand its Nuclear Capability. His message hours after Vladimir Putin called for boosting the strike capability of russias nuclear forces. The comments raising troubling new questions about the future of the relationship even as trumps Transition Team rushes to explain the statement. As president , trump may act quickly on a key campaign theme. Sources say he may place a 5 or 10 tariff on goods imported to the United States. Critics say that could start a trade war and raise prices for americans. Supporters say it could boost jobs. Ill speak with state Department Spokesman john kirby and our correspondents, analysts and guests are standing by with full coverage of the days top stories. First to the Christmas Market attack. As a man hunt intensifies, shocking details emerge about how much authorities in germany and also here in the u. S. Knew about the suspect. We begin the investigation with brian todd. What are you learning, brian . Tonight we are told the chief suspect, anis amri, was known to u. S. Intelligence before the berlin attack. U. S. Officials briefed on the investigation telling cnn he was put on a nofly list along with other members of a group of suspected jihadist supporters. They believe some members were communicating with isis operatives responsible for plotting and directing attacks. The sources did not say if anis amri was one of those communicating, but tonight its clear to german officials he is the man responsible for the carnage at the Christmas Market. Frightening new video, seconds before impact, newly released dashcam footage of the tractortrailer truck speeding through an intersection in berlin toward the Christmas Market. Tonight German Authorities are more confident than ever that this man, 24yearold anis amri from tunisia, believed to be seen in this selfie video, was the driver of the truck that killed a dozen people in berlin. Translator we were able to find fingerprints on the outside of the truck, on the door, and the door pillar. Reporter tonight, jarring new information on amris ties to an isis recruiting network and what German Authorities knew well before the marketplace attack. According to german investigative files seen by cnn, an informant told police, quote, anis spoke several times about committing attacks. The files say members of the isis recruiting network backed the idea and discussed driving a truck loaded with a bomb into a crowd. Yes, the germans dropped the ball here. Yet, thats not uncommon. And in fact, in the United States we have pretty much all the lethal attacks in the United States since 9 11 involved somebody who was known to authorities. Italian police tell cnn ahm re entered italy in 2011 without i. D. And served four years in prison for assault and arson stemming from a brawl at a refugee center. This guy looks like a lot of the other murderers weve seen associated with isis in europe. Many are criminals. Theyve begin through the prison system. They may have radicalized there. After his release in may of last year Italian Police tried to deport him to tunisia but he was not accepted. He then slipped into germany. His brothers say when he got out of the prison he was a different person. Translator we always had our differences and didnt agree on much. When i wanted to discuss something with him, he would end the conversation and say, just send my regards to the family. Reporter tonight, a massive dragnet across europe for the suspect. In germany, several locations and a longdistance bus were searched but anis amri remains at large, armed and dangerous. What are the agencies doing right now to corner him . Theyre probably spending time going through the information that they have, the information from the italians, from when he was in prison, who came to see him, with whom did he communicate. Did he receive packages from anybody . As a fugitive, you have to have a place to hide and resources, money. Reporter Law Enforcement veterans tell us German Authorities have to be ready for a violent end to this man hunt. They say, given that anis amri allegedly shot and killed the truck driver and used the truck to kill other civilians hell likely not go out peacefully. Brian todd, thank you. Bringing in cnn terrorism analyst paul cruickshank. As were showing the viewers, we have new video of the truck attack on the Christmas Market, just awful. You see it go by there. You are actually getting new information about the suspect and the investigation. What are you learning . Thats right. This comes from that 345page investigative file that cnn has obtained and that i have been reading through today, lots and lots of detail. There was a Police Informant in this network to which the suspected attacker belonged. He was feeding back all kinds of information to german investigators. Including the fact that on several occasions amri talked about the desire to launch an attack. In the leadup to christmas a year ago he was preparing to try to go and join isis. He was actually going on hikes, including one tenmile hike, with backpacks to get into shape so that, when he got to syria and iraq, that he would be in good condition. He was not able, then to travel to join the group in syria and iraq. It appears he may have become frustrated because of that fact. But members of the network were trying to help him logistically to get over there. And so lots of lots of information coming out from these files, including the fact that other members of the network were discussing launching a truck attack inside germany, perhaps putting gasoline bombs into the truck. All of this months ago coming into German Security services which begs all sorts of questions. Why didnt they intercept him. Now, they did manage to arrest the five leading figures in this network in germany in november. It was a very organized network, all reporting up to this charismatic preacher who was an iraqi, a 32yearold. They were so organized that they had sort of subdivisions within germany. And even a common curriculum for how to indoctrinate youngsters, if you can believe that, brianna. And considering what they know about the network, paul, did they have any sense, even broadly, of where the suspect could be . Well, they havent found him yet. And but the one thing they have going for them right now is that they have all this extensive information about this network, so theyve got addresses, theyve got phone numbers. They know how the Network Connects to each other. And all of that can give them a lot of clues in terms of where he might be hiding. But the flipside of that is that he is apparently being supported by a network, and they may have had a plan for him to get away and then to be ready to launch a followon attacks. We saw after the paris attacks that the attacker who ducked out of the attack, he was hid for four months by the Logistical Support network. The concern is he may move forward to launching another attack. He is considered armed and dangerous. He could hijack another truck in germany. These people want to go out in a blaze of glory. Theyre desperately seeking martyrdom so that they, in their idea, will go to paradise. Its a scary thought. Paul cruickshank, thank you for your insight. Great reporting. Joining me now is state Department Spokesman john kirby. Thank you for being with us. Evan perez here at cnn has reported that the suspect was known not only to german intelligence but also to u. S. Intelligence, that he had been identified as someone who should be on a nofly list. Is there anything you can tell us about him, what the u. S. Government had on their radar . I am afraid not. Its an ongoing investigation. We want to get ahead of that. I cant talk to intelligence estimates here. That said, it wouldnt surprise me if this was a cell that we had knowledge of. And certainly we have robust information sharing arrangements with our partners in europe, such as in germany. It wouldnt surprise me if we had some context on this individual or other individuals in the cells and were acting on that inside our own Law Enforcement capabilities. But again, i just dont have much detail on this one. Is the u. S. Offering any assistance in searching for the suspect . Weve certainly offered assistance to German Authorities in support of their investigative process here. And that offer is open and stands stands open. I am not aware that there has been any direct assistance offered and provided. As i say, clearly we have had longstanding information sharing arrangements with German Authorities which i am sure is helping to bear some fruit in their investigation. This suspect spoke several times about committing attacks. We know that now from this reporting about a Police Informant. He was well known to German Police. Many people are saying that this was a failure of german Law Enforcement, that he was able to carry this out. What do you think . I think its i think we need to be careful jumping to conclusions right now. This attack just happened, and the investigation is just under way. By the way, its not just an investigation of a terrorist attack. There is a live man hunt going on. And i think its not helpful to try to get ahead of that right now or to try to jump to conclusions and cast aspersions. I think we need to let the German Authorities do their jobs. They still have legitimate concerns about this individual being on the lam and potentially armed and dangerous. We need to let them work through that. I am sure that they will be very thorough in their investigation, and that theyll be transparent about it as well. If there are lessons to be learned, i am positive that theyll adopt those lessons and theyll speak about them and well move on. As you know, these terrorists only have to be right once. Authorities have to be right 365 days a year, every hour of every day. Its really hard, if not impossible, to get every single thing right and to prevent every single attack. If an individual is willing to put their lives on the line in a Suicide Attack or an attack like this, be willing to have themselves killed, its very, very hard to get in front of that. Even if they are on the radar, theyve talked about an attack much like the one they carried out, theyve almost gone through the deportation process, theyve been identified as someone who should be deported, and then a judge releases them back into society. Well, again, i think we need to let them work their process here. The investigative process. And to figure out what they knew and what indications they might have had. Sometimes intent is very difficult to determine here in front of terrorist attacks. I am not minimizing the fact that this guy was on the radar and maybe they knew about some of his associations, but its very difficult to go from that to being able to predict, you know, a certain specific attack on a certain specific day and a location. Again, i think we need to let them work their investigation before we jump to conclusions. Okay. On a separate topic, there is this showdown vote that is looming at the u. N. Security council on a resolution to condemn activity in the west bank, donald trump citing very much with israel. Obviously thats perhaps at odds with the white house, or its unusual. Whats your perspective on this . What some people are calling an unprecedented situation where the president elect is taking a position that really puts the white house in a bad spot . I wont speak for the president elect and positions he might take on this. I can tell you, as you know, the draft language of that resolution went public last night. There was supposed to be a vote today. The egyptians, who introduced the language, asked for a postponement. And so we are postponed. Yes. Was the u. S. Going to vote . Was the u. S. Going to abstain . I am not going to get ahead. We never preview our votes. We appreciate it. We know egypt is delaying the vote. But what does it mean from your perspective as a member of the Obama Administration to be boxed in by the president elect . Was there some sort of notice given or well, look, i dont again, without previewing what we may do if and when this resolution comes to a vote, nobody here felt boxed in by a tweet from the president elect, and he is perfectly entitled to express his views on these kinds of things. But there was no boxing in of our purview or how we might deal with this going forward. We need to, again, let the process move forward. Well see if it comes up again for a vote and then participate in the debate and discussion and the vote itself. And then, as we always do after a vote, brianna, well explain that vote and articulate what position we took and why. Okay. John kirby, stay with me here. We have much more to talk about, including talk from the president elect and from russia about increasing the amount of nuclear weapons. Well be right back. Ning the sa. A post using the hashtag justrobbedthesafe so, what are we supposed to think . Switching to geico could save you a bunch of money on Car Insurance. Excellent point. Case dismissed. Geico. Because saving fifteen percent or more on Car Insurance woo because saving fifteen percent or more on Car Insurance is always a great answer. Were talking with state Department Spokesman john kirby about two breaking stories tonight, including that the trump Transition Team is rushing to explain a tweet saying the u. S. Must boost his Nuclear Capability. Coming after Vladimir Putin spoke about enhancing his countrys nuclear forces. Turning now to cnn pentagon correspondent barbara starr, many people are looking at this, barbara, and they think that it sounds a little like the cold war. It appears to. There is a lot of confusion about what either man was talking about today. Vladimir putin starting by saying the Russian Military was the strongest in the world against any aggressor, something perhaps the u. S. Military might disagree with. But putin came out and said roughly that the that russia needs to strengthen its Strategic Nuclear forces, strengthen, expand. He wants to go against missile defenses in europe. Thats a bit of a slam at the u. S. Military which is putting missile defenses in europe to protect them against iran. Putin very unhappy about all of this, being very assertive on Russian Nuclear forces. Now, a couple of hours later, president elect donald trump came out. Lets look at what he started off by tweeting. Mr. Trump saying also, and i quote, the United States must greatly strengthen and expand its Nuclear Capability until such time as the world comes to its senses regarding nukes. So trump also talking about expanding Nuclear Capability. A short time later, the trump Transition Team came out trying to clarify what mr. Trump meant, a lengthy statement saying, and i quote again, president elect trump was referring to the threat of Nuclear Proliferation and the critical need to prevent it, particularly to and among terrorist organizations and unstable and rogue regimes. He has also emphasized the need to improve and modernize our deterrent capability as a vital way to pursue peace through strength. Theyre emphasizing mr. Trumps previous statement about modernizing the nuclear arsenal. The bottom line tonight, both men put their nuclear cards on the table but have yet to turn those cards over. We do not know what those cards might really be all about. Barbara starr at the pentagon, thank you so much. Back now with state Department Spokesman john kirby. John, when you saw this tweet from donald trump and then you hear similar language from Vladimir Putin, what did you think of that . Well, its difficult to know what to make of it all. I mean, what i can tell you is that we actually, in the clarification that the Transition Team put out, i think we readily agree, that we need to work on ways to eliminate Nuclear Proliferation. If you look at the iran deal, thats one very strong way that this administration has tried to deal with the proliferation threat, particularly from tehran. We have also been working over the last eight