Boris sanchez joins me from palm beach, florida, near trumps maralago resort. Boris a lot going on this morning. Reporter yes. Certainly a rapid fire series of responses from both trump, his team and russian leader Vladimir Putin. Just in the past hour or so a look at the letter Vladimir Putin sent to donald trump today expressing a deep desire for bilateral work to be done between the United States and russia when it came to a series of diplomatic issues around the world. Trump then put out his response and he writes in part, a very nice letter from Vladimir Putin. His thoughts are so correct. I hope both sides are able to live up to these thoughts and we do not have to travel an ultimate path. The language at the end there, fascinating. Especially when you consider the rhetoric from trump just about 24 hours ago in that tweet you mentioned that he put out, specifically talking about expanding American Nuclear capabilities. Initially the trump camp came out and said that he was talking about nonproliferation and keeping Nuclear Weapons out of the hands of terrorist organizations and rogue actors. And then this morning you heard that comment from him saying, let there be an arms race and shortly after that we actually had sean spicer, the current spokesman for the rnc, soon to be Donald Trumps press secretary on new day atalking about what donald trump meant by those comments. Listen to that exchange now. He is going to do what it takes to protect this country and if another country or countries want to threaten our safety or sovereignty hes going to do what it takes. Sure, but hes not waiting until another country threaten us. Hes making these proclamations before. Right, but making it very clear that other countries and other companies. Youve seen with carrier and others, hes going to make it clear he will be an active that will get things done. Use Nuclear Weapons if need be . Hes not going to sit back. Send a clear and concise message which has he done she a flaed will defend americas interests and americas people. Reporter important to point out trumps tweet came out on the heels of russian president putin saying russians wanted to enhance their own Nuclear Capabilities. Overnight, sort of a state of the union press conference was asked about trumps tweet and the relationship with the United States. He said trumps comments on nukes was nothing new and added that relations between the United States and russia could not be worse. John . All right. Boris sanchez, outside maralago in florida. Thanks a lot. Now to moscow and fwling our Senior International correspondent matthew chance, there covering events. Matthew, we just got a look at this letter sent to donald trump last week by russian president Vladimir Putin. Vladimir putin wants to restore the framework of bilateral cooperation. Key word, restore, and bring collaboration on the International Scene to a qualitatively new level. That means more, different, better. Interesting to read that. Reporter yes. It was. And i think this, this is totally in line with how the kremlin has been viewing donald trump since early on in his campaign. He was always sort of perceived as being the kremlin candidate. He was always somebody that spoke sympathetically about the russian world view and always somebody that the Russian Media, you know, supported and the Russian Media here are controlled by the kremlin and theyre a conduit for what the kremlin really thinks, and it all contrasts sfas s starkly, t letter and tones it, reaching out to donald trump with the way an epic press conference lasting four hours, one of his annual set events, contrasts with the way he speaks about the current u. S. Administration. The obama presidency. He said about them, that the Current Administration always tries to find a scapegoat for its failings, referring to the allegation that russia had its thumb on the scale in the president ial election. The democrats, he said, lost the presidency. The senate and the house of representatives. Am i to blame for that . He asked the audience of 1,400 journalists that gathered there. Is russia responsible for everything . If you lose, you should lose with dignity. Those kinds of vicious remarks really underlined how much animosity there is at the moment between the kremlin and the white house, and that letter which was sent on december 15th, only just within the past few minutes, really, been made public, underlines, you know, the new relationship that the kremlin and Vladimir Putin wraunts wants to have with incoming president donald trump. Indeed, the nature of this letter, the more congenial tones, perhaps the new relationship we expected, the new relationship we might not have been expecting, matthew, a back and forth over nuclear arms with both the president elect and the russian leader talking in their own way about expanding capabilities . Reporter yes, theyre both Nuclear Superpowers and obviously theyve both been concerns with modernizing their arsenals for various, different reasons, as a matter of fact. Its not clear to me, and, of course, i wasnt party to this conversation, but its not clear to me that donald trump when he made these remarks was specifically referring to an arms race, a new arms race with russia. It was my impression, could be wrong about this, he was talking in general other countries that want to develop Nuclear Weapons or build up Nuclear Arsenals. An arms race with them and the United States could win. Certainly from the Russian Point of view, russia has, you know putin has put to one side and downplayed the significance of those remarks. Take a listen what he had to say as that epic press conference earlier on today. T translator the technical nuclear arms are updated. Are modernizedaccelerates the arms race, its not us. Reporter President Trump went on to say he doesnt regard, paraphrasing, doesnt regard the United States as an aggressor. No. It is interesting, matthew. A great point. Sometimes we dont know how to infer what donald trump means, particularly on twitter. Just 140 characters and left open to interpretation, and interpretation can be potentially dangerous when talking about Nuclear Capabilities. Hence the 24hour discussion back and forth. Great you have both with us. Joined by International Security analyst jim walsh along with cnn pentagon correspondent barbara starr. Guys, let me ask you, not about the back and forth on Nuclear Weapons exactly. Not about the Vladimir Putin letter we were just talking about, but, jim, if i can, let me ask you about the donald trump response to this letter which i will now read out loud. A very nice letter from Vladimir Putin. His thoughts are so correct. I hope both sides are able to live up to these thoughts, and we do not have to travel an alter knit path. Quote unquote. To me, not having to travel an alternate path was new language from donald trump in regards to Vladimir Putin. It was an implicit all that albeit thanking him for the gracious letter and that if things dont go well, theres an or else . Yes, an to that. In some ways that makes sense. Dealing with an adversary, in russias case, a frenemy. Sometimes you have a carrot but thieve stick in the background. A comment to Nuclear Weapons. No subtlety on those. My first reaction, this is from the guy who stopped taking intelligence briefings. No president in u. S. History, democratic or republican, has invited a nuclear arms race, whether with russia, china, whoever it might be. No one has ever done. When you do that, it up sets your allies, undermines the nonproliferation regime and if implemented would actually increase the risk of nuclear war. Donald trump has taken the classified security brief twice this week that we know of. He took it yesterday and he took it the day before, but youre correct. Up to that point averaging about one a week. Barbara starr, to you. This issue of strengthening and expanding the countrys Nuclear Capabilities. We do know that modernizing the Nuclear Force has been something many president s agreed on, but if talking about growing in numbers, that would be a change in policy. Run counter to many treaties and military analysts say its actually not what the country needs . Reporter thats a question you have to ask yourself. Do more Nuclear Weapons really add to the deterrent capability to be nonproliferation capability and influence of the United States . Because, look, for the last 48 hours, 24 or so, it is not just russia and the u. S. Engaging in this dialogue. This is being watched very closely by other nuclear powers. By china, by north korea. By iran. Pakistan. India. All of the countries that may have very Small Nuclear arsenal but do have them, watched perhaps by terrorists groups very savvy on these matters and want to know exactly where the seams may be they could exploit in their effort to potentially get dirty bombs, potentially get radiological weapons. Will there be more movement of this kind of materiel, because of the uncertainty . Really, up until now, Nuclear Weapons arsenals have pretty much been locked down by treaty. Everybodys modernizing, people are talking about getting more, but really between the u. S. And russia, its pretty much locked down by treaty limits, and now it does appear that mr. Trump is at least willing, even if its a negotiating ploy, willing to open it back up again. Interesting. Sean spicer, trying to help us understand what donald trump was saying, suggested that the president elect is saying we just wont back down to anyone else who tries to make threats, or any other country that tries to grow or expand its Nuclear Force. Well, you know, which countries are trying to do that . We know north korea is, beyond north korea, are there any countries that seem to be a growing imminent threat when it comes to their Nuclear Arsenal . In terms of the growth of Nuclear Arsenals, pakistan is the one growing at the fastest rate. Still a relatively small number of Nuclear Weapons but its pace is increasing and you say what will india do in responses to that . And there are conversations in china. China for years had a first use policy and called a minimum deterrent. Only build minimum necessary. Echoing barbaras point, in the nuclear world, more doesnt always mean better. The rebel just bounces and building more doesnt get you anywhere but the chinese are starting to reconsider that policy, reconsidering it. Statements like this that say were going to expand, bust through our limits and build more are comments watched very closely in beijing and islamabad. So, barbara, beyond Nuclear Weapons, when Vladimir Putin invites donald trump to enter into a relationship that will take things to a qualitatively new level, where in the world will we see the effects of that new relationship the most quickly . Reporter its fair to say mr. Putin is looking for an economic relationship. The russians want the economic sanctions lifted. The oil prices have fallen. Their economy is suffering under sanctions by all accounts. They want to get cash. So what theyre looking for is an economic relationship with the u. S. And with the world state. The problem for the United States is, i think military commanders will tell you, they dont feel they can trust putin. Hes not pulling out of crimea or eastern ukraine. Definitely not pulling out of the middle east, of syria. This is where he wants russia to have influence. This is where Vladimir Putin wants russia to be back as a world power on the global stage, and he is succeeding at those goals in those places. So can you trust what Vladimir Putin says in terms of security, Global Security . A lot of people, i would think its fair to say, are still very skeptical of that, and the question is, are you going to put all of that aside and give him what he wants on economic policy, on sanctions . Jim, i want to give you the last word here and talk about the history of proposition when it comes to language dealing with nuclear arms. Something generations of diplomats, generations of u. S. Officials, russian officials, world leaders, have been very careful with the type of language they used, and it may well be donald trump was being very careful when he tweeted that yesterday. And if he was, talk to me about the message received within the world of nuclear discussions . I dont think you should carry on Nuclear Doctrine development or diplomacy on twitter. There arent enough characters to be able to communicate nuance. Allies are nervous because they dont know how to interpret the comments and it gets our enemies thinking. My advice to the president elect, wait 20 days, until you have a secretary of state, a National Security team in place. You know, the people that will do the policy review to figure out what you want to do Going Forward, and then the carefully articulate it, so both friends and enemies know exactly what we mean. Nuclear weapons are important, and they are fundamental to our security. There is no reason to be sort of doing it off the top of your head. Jim walsh, barbara starr, great to have you with us. Have a great holiday, guys. Happy holidays. Up next, a quick and deadly ending for the manhunt in berlin in the man wanted for the berlin christmas attack. Your Insurance Company wont replace the full value of your totaled new car. The guy says you picked the wrong insurance plan. No, i picked the wrong Insurance Company. With Liberty Mutual new car replacement™, you wont have to worry about replacing your car because youll get the full value back including depreciation. And if you have more than one Liberty Mutual policy, you qualify for a multipolicy discount, saving you money on your car and home coverage. Call for a free quote today. Liberty stands with you™. Liberty mutual insurance. Therthere is nothing typical about making movies. Im victoria alonso and im an executive producer. At marvel studios. We are very much handson producers. If my office. Becomes a plane or an airport the surface pros perfect. 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Pot pie because when its cold outside, good food and good company keep you warm inside. Marie callenders more breaking news now. Europe urgent manhunt is over. The man german officials believe plow add truck into a Christmas Market is dead. He turned up at a checkpoint in the milan, italy. There was gunfire and the 24yearold from tunisia was shot dead. Our Senior Correspondent ben wedeman is in rome. How did this all go down, ben . Reporter as quite simple. 3 00 in the morning outside the train station in a workingclass neighborhood of milan, this Police Patrol stopped a man they said was acting suspiciously. They asked for some form of identification. He shouted [ speaking in Foreign Language ] Police Bastards and pulled out a. 24 caliber pistol and shot them hitting one of the Police Officers in the shoulder and then took cover behind a car. Fortunately, one of the other Police Officers managed to get behind him and shoot him fatally in the chest. They found on his body afterwards train ticket stub s indicating he got from germany somehow to france, took a train first in illy, stopping in turan, going to the main train station in milan before going to this train station. On his body he had several hundred euro and a small knife police say he did not have anybody with him at the time. Now, the question is, what was he doing in that particular neighborhood of m