That are exciting. As you know, were going to head to the Golden Globes coming up this weekend. After that were not coming back to new york, at least not immediately. Well tell you about it coming up. Yeah, the whole show is headed somewhere. More on that in a minute. First, lets get right to our breaking news. North korea claiming it has Hydrogen Bomb. If true, it would mark a significant and dangerous advance for north koreas military and a disturbing threat to the region. Lets get right to nbcs chief global correspondent bill neely. Good morning, savannah. No question this was a surprise especially for north koreas neighbors. The worlds most closed country announcing what would be a dramatic escalation in its Nuclear Capability if that is is to be believed. There was a test, bomb . A north korean tv announcer clclms the countrys firir Hydrogen Bomb test and calls it a success. We wont stop our nuclear program, she says, because of what she calls american aggression. [ cheers ] reporter they cheered in north koreas capital. They have seen three previous tests announced but never of an hbomb, a far more powerful weapon. The u. S. Is waiting to invade our country, this man says, so its the right thing to do. The Hydrogen Bomb, he saysys is a reliableay of defending ourselves. The tremors from the underground and in south korea where Officials Say its a provocation. North koreas leader kim jongun knows that and s sned the test order anyway. Japan, too, is alarmed. Military planes taking off to test air samples. The u. S. Ambassador meeting to reassure a government that says the test is a serious threat. We stand with japan and our solidarity with this north korea provocation. Reporter north korea has an graesk nuclear and an aggressive nuclear and Weapons Program showing off hardware three months ago. Whats dangerous about this latest test is that a hydren bomb can be smaller, lighter and easier to deliver on a missile warhead. North koreas leader kim jongun is still consolidating his power and now flexing his muscles at a world thats looking at north korea w wh real anxiety. And it may take weeks to work out if this was a Hydrogen Bomb, and if it was successful and a viableevice. But anything that can produce a seismic shock of 5. 1 is dangerous, and there will be consequences for north korea. The u. N. Will meet later and may move towardsdsighter sanctions, but kim jongun is unlikely to be deterred by that. Matt, savannah. Bill neely in london, thank you. Chief Foreign Affairs correspondent Andrea Mitchell. Andrea, if the North Koreans have now successfully tested their first Hydrogen Bomb, thats a very dangous first step forward, but if u. S. Intelligence was caught offguard, thats also dangerous, isnt it . Reporter absolutely. This was, as bill was just saying, a complete surprise. They knew that something was up. No idea if this is, ananthis is a big if, we havent confirmed it. It will be days if not weeks before they can absolutely confirm it, but if this is true, a major escalation, a much more powerful weapon. They had done three previous tests, but they were lower yield plutonium devices. They also have a Uranium Program but no idea that they were this advanced if this is indeed a hydrogen blast. All right. Andrea mitchell, andrea, s sck around. Well talk to but politics in a moment. A moment. Yeah. Lets turn to the president ial race now. New attacks from republican frontrunner donald trump against both his republican and democratic rivals. In a moment, how Hillary Clinton is responding to trump, but, first, lets go to nbc National CorrespondentPeter Alexander in washington for the late on the reporter hi, savannah. Gogo morning. Those republicans once just curious about trump are now creasingly committeded here you go. A new reuters online poll today shows trump way out in front at 42 nationally, three times ted cruzuz support. Still, cruz polled best in iowa. The first caucus state and in a clearer sign yet that trump sees talking up questions about cruzs eligibility to be president. The natitis best known Birther Donald t tmp famously demanded to see president Barack Obamas birth certificate and now taking issue with texas senator ted cruzs birthplace, canada. Raising the topic on msnbcs morning joe. Its a problem for him. Lets assume he got the nomination, and the democrats bring suit. The suit takes two to three years to solve so how do you run . Reporter trump later punctuating his point to the washington post. A lot of people are talking about it, and i know that even strongly, he said. The fact that he was born in canada and hes had a double passport. Cruz tweeting his response, this unforgettable seen from happy days with the fonz literally jumping the shark, suggesting trump is getting desperate. Most legal expertstsgree hes the son of an American Mother cruz qualifies as a natural born citizen. Nbcs casey hunt asked jeb bush about it tuesday night. Do you think that ted cruz is a naturalborn c cizen and is eligibib for the presidency . Yeah, i do. Reporter trump isnt backing down from his confrontation with the clintons either. Its fair game when they attack me. Im going to attack them. Reporter the billionaire insisting he only brout up bill clintons extra Marital Affairs after Hillary Clinton accused him ofofexism first. Wheheshe said that, well, your husband is now campaigning, its open season. Now if he wasnt campaigning, maybe it would be different, and if he werent a past president it would be totally different. Reporter and hours after president obamas emotional peal for an end to g g violence, the republicans remained unimpressed. Trump teeing off from new they are not going to take your guns away, folks. Theyre notot going to take your gugu away. Reporter ted cruz mocking the president as a tyrant tweeting gun control is government control. And new this morning, trumps wife milania is speaking out candidly, the supermodel telling Harpers Bazaar magazine that shshs chosen to stay quiui but isisquote, very political in private life. She says she hasnt thought much about life in the white house but has been working with the couples 9yearold son baron to keep his life in her words as normal as possible. Matt and savannah . All right, peter, t tnk you. On the democratic side, frontrunner Hillary Clinton is responding to some of trumps rhetoric as she takes her campaign west today. Nbcs Kristen Welker has more on that. Hi, kristen, good morning. Reporter hey, matt, good morning to you. Thats right. Secretary clinton will be campaigning in las vegas later today. Of course, nevada is a key western state, and it comes as escalating. Facing an increasingly competitive race in mustwin iowa hililry clinton ignored Donald Trumps attacks late tuesday focusing instead on rallying her supporters here. You know, im excited about the organization weve been building here in the state. Reporter but earlier in the day, fireworks for trump. Clinton saying his heated rhetoric makes him unfit to lead. We should not reward people who use inflammatory rhetoric, who use the kind of derogatory comments whether its about muslims or mexicans or women or people with disabilities, whoever it might be. Reporter in an exclusive interview with msnbcs chris mamahews clinton warned thats a sign of, you know, shownship, of desperation that should be rejected roundly by the american people. Reporter strong words, but clinton stopped there, refusing to engage trump on his personal attacks of her and her husband who is back on the trail this week. President bill clinton for the transgressions that nearly it is . I will not respond to his how can i rephrase i will not respond to his personal attack what does it say about the republicans . I sound like a lawyer. How can i rephrase he can say whatever he wants to say. Ill talk about what i wanted to talk about. Reporter and thousands of miles away at the white house president obama announced new actions on gun laws. Every time i think about those kids it gets me mad. Reporter clinton making no mention of the president getting emotional, praised obama while also taking a little credit. I was very proud that he made these recommendations, somomof which i have been advocating in this campaign for. Reporter now, clinton has made gun control a key pillar of her campaign. It resonates with democratic primary voters and also one of the rare issues that shes seen as being to the left of vermont senator Bernie Sanders. Sanders also praised president obamas actions on guns yesterday. Will face off at a party dinner in las vegas tonight. Matt, savannah, back to you. All right. Kristen welker, thanks very much. Lets focus in on the state of the race with less than four weeks to go from the Iowa Caucuses with chuck todd and Andrea Mitchell and here in the studio Nicolle Wallace and Mark Halperin and managing editor of blooooerg politics and msnsn commentator Steve Kornacki. Good morning to all of you. Full house. Segment is over with all of yours resumes. Ted cruz has launched a missive excuse me, trump has launched a missive on ted cruzs eligibility to run for president. Do you think this is something that will have appeal with conservative voters, or does this have the feel of kind of throwing everything at the wall . I think its a distraction. I think, you know, watch today when when t t talk radio circuit who has been very supportive of ted cruz, and any time theres been a split sided with cruz. I suspect unless they somehow turn on cruz on this issue, i dont think this is going to be an issue at all with nservative voters. Nicole, let me turn to you. Wheres myth romney. When is he going to endorse a candidate in this ration, and how important would would that endorsement be . I think hes wise to stay quiet because the age. Arbiter or the referee in republican politics is long gone. John m main is another figururin the rereblican party. He used to be able to throw a flag and call this or that in bounds or out of bounds. The reason i think people like that have stayed kwai set that the Republican Base is so disdainful of the whole notion of any sort of establishment figure coming in and giving them any sort of guguance. If he were to jump behind Chris Christie or marco rubio you dont think it would make any difference . Not only do i think it would not only help them, i think theres possibility it could hurt them. That leads me to the question with Steve Kornacki which is where is this vaunted republican establishment that used to be balls and strikes . Where are they . Is this Campaign Going tonight end what have we call if it rears its head it will be in New Hampshire. It wont in iowa, and the biggest problem the establishment has in New Hampshire slight now is youve got four candidates, christie, rubio, kasich and bush, running 10 , 12 and all eating up the socalled establishment vote and letting people run away so if one can consolidate they can give trump a run for the on rare occasions when the discussion includes anyone other than donald trump and Hillary Clinton you hear more and more people saying Chris Christie is heating up. Hes on the move. He may be peaking at the right time, and yet if you look at his National Polling numbers, you dont dont really see that. Why are people suddenly going behind Chris Christie . Because to win youve got to win a state or do really well in a state and Chris Christie in New Hampshire, to take the old line, perfect together. Its a good state for him. Donald trump, based on his resources and his message and poll standing, hell be a finalist. Ted cruz, resources, poll create another finalist. Youve got to create it if youre jeb bush or chris christst or marco rubio. Christie looks like a guy who can create this for himself right now because hes got a message and hes swaggering. You agree . In New Hampshire, can i see him emerge there. I think hes making more moves outside of New Hampshire thats been detected on a wide scale. Made some good moves in iowa. Drove over the holidays from to iowa. National security voters in iowa who care a lot about fighting terrorism. The world is on fire. He could finish third in iowa and then mitt romney and others will say this isisur one guy from our establishment lane, were going to get behind him but i agree with nicole, may not help him. I want to get andrea into this conversation. Lets talk about the bill clinton factor, andrea. Obviously incredibly popular with democratic voters and yet weve seen this wound open up that donald trump has driven right through in terms of the negatives of bill clinton. Is he a net positive or net negative when you factor all that in . Overwhelming popularity in every poll, especially with the general electorate, i think its a net positive. Hes obviously a lightning rod in republican primaries, and thats why youre hearing donald trump and all the others going after him. So its a great issue in the republican primaries, but in the general election i think hes a net positive as long as he goes along with the guide action. You can see when we were with him the other day in nashua, in New Hampshire, he really wanted to respond to trump and bit his tongue and pulled back but there will be a moment when he might go off the program. Mark, that was one of your questions. Will he take the bait at some point . The clintons have a big choice to make, do they want to spend january fighting with trump . They say if he goes after other americans that they will engage him, that they will hold him accountable. They dont want to engage on the personal stuff. Lets see if they can be disciplined. Fifiting with trump, everyone we learned this year and last year thank you. New developments this morning in another story. The investigation into last months terror attack in san bernardino, california. Federal authorities are looking for the publics help in accounting for every moment of the killers whereabouts on that day. There is an 18minute gap in the timeline between the massacre that left 14 dead and the shootout where both gunmen were killed. The fbi says they want to know in syed farook and Tashfeen Malik stopped at any residence or business that they dont already know about. And now to the situation still unfolding in oregon where armed antigovernment protesters have taken over a federal wiwilife refuge. This morning there are hints that the occupation may soon come to an end. The leader ammon bundy says the group has a plan to help ranchers in the community defend themselves against the federal government and provided few details. One of the other activists said on tuesday that he needs to get back to the nevada ranch saying, are scattered and lost. Perfect segue. Mr. Roker is here. Dont even go there. With a check of the weather, how are you doing . Doing good, but, unfortunately, our friends in california not doing so good. Take a look. Now, watch this. Theres a lamborghini going to try to get through this. Oh, whoa. In san diego. He actually made, it believe it or not. Yes, he did, but then he got out and got out on that paddle board, no, and then this guy had to go get his car. This is rough stuff, and weve got more heavy rain coming again for today. Look at whats happening. Another storm system pushing on in. That first system now moving into arizona. The second one coming into central and Northern California and eventually makes its way down to Southern California. Weve got flood watches stretching from oakland all the way down to san diego. 19 Million People in effect on this and also a winter storm watch up for 4 Million People in the Pacific Northwest and southwest. More snow in the sierra. This is the last round of the heaviest stuff. Rain and snow will be added to the previous totals so well be watching that as well. Snowfall amounts. We are look amount a lot of rain to start off another 3 to 4 inches. Some areas could pick up 5 inches and rainfall rates, 1 to 2. And the good news is, plenty of snow, especially up in the sierra again. Blizzard conditions, wind gusts of 60 Miles Per Hour and whiteout conditions. This is el nino. Its going to be over and over and over again for the next several weeks. Were going to get to your local forecast coming up in the next evening. We will start the day with a mostly cloudy sky, but light snow showers will track in later this afternoon and especially this evening and overnight. Tomorrow we will start off with a mix of rain and snow, perhaps a little freezing drizzle but then we will see a transition to all rain wi and thats your latest weather. Thank you, mr. Roker. Luck . The powerball fever taking the country by storm. Tonights jackpot up to 450 million. And the tsa under fire over a lengthy patdown. Why one father says the agent crossed the line with his 10yearold daughter. Today on nbc. Days after the paris attacks, senators came together for a topsecret briefing on the terrorist threat. Fundraising in calif