icon. "nightly news" begins right now. >> announcer: from nbc news world headquarters in new york, this is "nbc nightly news" with lester holt. >> good evening. for president may be feeling more and more like a reality show tonight starring a man who before he became a candidate, proved he could draw an audience. and so donald trump will likely have a lot of eyeballs watching tonight.t. either the republican debate that he has now vowed to boycott or his own event that could steal the spotlight. leading up to all this, a public dual with fox news, public pleas that he reconsider, even prime time discussions of milkshakes, all just four days until the vote in iowa. peter alexander explains. >> reporter: tonight should be the republicans final showdown before the wow caucuses. the front-runner staging his own prime time event to raise money for veterans. going head to head on tv with the fox news debate just three miles away. even drawing a pair of his underdog opponents. mike huckabee and rick santorum. >> by walking away from this debate -- i was pushed away. i'm not walking away.

. >>> nbc news exclusive richard engel in iran, with a scientist at the nuclear negotiating table with the u.s. revealing the secret conditions set by the supreme leader himself. >>> fixed game. you try to get tickets to a concert or big game, but they sell out immediately. tonight, the surprise reason why you're getting shut out. barbie. the biggest change in the history of an american icon. "nightly news" begins right now. >> announcer: from nbc news world headquarters in new york, this is "nbc nightly news" with lester holt. >>> good evening. to a lot of people, the republican race for president may be feeling more and more tonight, starring a man that before he became a candidate, an audience. so donald trump will likely have a lot of eyeballs watching tonight. either the republican debate that he's now vowed to boycott or his own event that could steal the spotlight. leading up to this, a public duel with fox news that he reconsider. even primetime discussions of milkshakes. all just four days until the vote in iowa. nbc's peter alexander explains. >> reporter: tonight should be t

an american icon. "nightly news" begins right now. >> announcer: from nbc news world headquarters in new york, this is "nbc nightly news" with lester holt. to a lot of people, the republican race for president may be feeling more and more like a reality show tonight, starring a man that before he became a candidate, proved he could draw an audience. so donald trump will likely have a lot of eyeballs watching tonight. either the republican debate that he's now vowed to boycott or his own event that could steal the spotlight. leading up to this, a public duel with fox news that he reconsider. even primetime discussions of milkshakes. all just four days until the vote in iowa. nbc's peter alexander explains. >> reporter: tonight should be the republican's final iowa caucuses, instead, donald trump's no-show is stealing the the front-runner staging his own primetime event to raise money for veterans. going head-to-head on the fox news debate three miles away. even drawing his underdog opponents, like huckabee and santorum. >> you're not giving them -- away. defiantly positioning himself

nbc news. penn would arrange this video interview and write a article for rolling stone describing it as a horror show, with burner phones and encrypted messages. on that october day as they were meeting with el chapo, law enforcement sources say mexican marines were preparing to move but to ensure the two actors would not be harmed, the raid was called off. a few days later, when the operations did take place, el chapo had already escaped. it would be three months before authorities would track guzman to los mochis. penn has detoured into journalism before, interviewing raul castro in cuba and the late leftist leader hugo chavez in venezuela. legal experts said any admissions could come back to haunt him. >> it is not clear that sean penn violated any american laws by this interview. it may not have been particularly ethical, but it wasn't necessarily illegal. >> reporter: penn told the associated press he had nothing to hide. the mexican government has already formally started the process to extradite el chapo to the u.s. to face drug charges. that could take years. meanwhile u.s

than 100 deaths, now possibly facing more issues. our nbc news investigation into the new complaints. >>> and recess time. we'll go to a school where the kids are getting a lot more breaks during the day, and the results may surprise you. "nightly news" begins now. >> announcer: this is nbc "nightly news" with kate snow. report tonight from charleston, south carolina. from the gilyard center where they're putting the final touches on the big stage behind me for the big night in politics. the final democratic debate before the voting starts in iowa he just two weeks from tomorrow. our new nbc news "wall street journal" poll sets the stage. hillary clinton with a comfortable lead nation wide. 59% of democratic primary voters pick hillary clinton, bernie sanders at 34%, and martin o'malley trailing at just 2%. but in hypothetical head-to-head match-ups with donald trump bernie sanders does better than hillary clinton. and with polls in iowa and new hampshire tightening over the past week there's a lot at stake here tonight. all while donald trump and ted cruz continue to battle it out o

. nbc nightly news is coming up next. >> have a great night. >>> on this sunday night, fight night. clinton versus sanders in tonight's crucial democratic debate. what they're saying about key issues like guns and health care with a tight race in the first primary state where the candidates stand nationally in our brand new poll. >>> deadly tornadoes. the unusual january storms that tore through parts of florida. we're there tonight in neighborhoods hit hard. >>> new problems. millions of gm cars recalled because of a defective part suspected in more than 100 issues. our nbc news investigation into the new complaints. >>> and recess time. kids are getting a lot more breaks during the day, and the results may surprise you. >> announcer: this is nbc "nightly news" with kate snow. report tonight from charleston, south carolina. from the gilyard center where they're putting the final touches on the big stage behind politics. the final democratic debate before the voting starts in iowa he just two weeks from tomorrow. our new nbc news "wall street journal" poll sets the stage. hillary c

now. >>> from nbc world headquarters in new york, this is nbc "nightly news." reporting tonight, erica hill. >>> good evening. in iowa tonight, it's a full court press. with the caucuses 48 hours away, candidates aren't wasting a moment, especially among the undecided. crisscrossing the state to make their to meet as many voters in a poll tonight, hillary clinton is leading bernie sanders, 45 to 42% in iowa. a virtual dead heat for the democrats. donald trump may be leading among republicans, 28%. ted cruz, 23. and marco rubio, 15%. nbc news has full coverage. we begin in cedar rapids with kristen welker. >> reporter: secretary clinton will look for votes here. she's bringing in her top surrogates, her husband and daughter chelsea. just a few miles away and in the exact same city, bernie sanders is making his final pitch in this race that is tight. hillary clinton and bernie sanders neck and neck, pulling out all the stops in the final hours before iowa voters weigh in. clinton facing new questions over her private e-mails. the state department releasing a new batch, withholding

race now a political thriller. kristen welker, nbc news, charleston., now a political thriller. kristen welker, nbc news, charleston. >>> andrea mitchell is down on the debate stage. what should we be looking for on sunday? >> i think you're going to see fireworks on the stage. because when they come on out sunday night, they'll have to be continuing that race. you've seen them going after each other on health care, on wall street. and this is because hillary clinton is in a place she never potentially losing iowa once again. and this time against an insurgent bernie sanders. what he is tapping into is the same kind of anger we're seeing on the republican side fuelling the donald this is an anti-establishment race now and it is neck and neck. lester. >> andrea. and a reminder that nbc news you tube democratic debate will air live here in charleston on sunday night at 9:00 eastern. >>> tonight there is an active search for 12 u.s. marines missing after two military helicopters collided in mid-air off the coast of hawaii. but as our chief pentagon reporter jim miklaszewski report

on the run. >>> an nbc news investigation revealing a replacement for a medical device associated with dozens of deaths also has potentially fatal flaws. "nightly news" begins right now. >>> good evening. the pictures were alarming. a towering hotel in dubai engulfed in flames. debris raining down on the streets below. the fire broke out just a couple of hours before huge celebrations were planned to ring in the new year. despite the inferno, only minor injuries have been reported so far. at midnight, the city went on with a record-breaking fireworks display, creating a surreal scene. keir simmons has the dramatic pictures. coming from dubai tonight. >> reporter: flames 20 floors high engulf a luxury building. chunks of debris falling, still on fire. >> six or seven minutes the entire side of the building was engulfed in flames. >> reporter: more than two hours, dubai's skyline lit up and not by its scheduled fireworks display. emergency responders racing to help. >> we saw quite a bit of firefighters making their way running top speed through the mall. to try to get to that locat

. >> we'll fine tune that as the days go by. >>> nbc nightly news is straight ahead. >>> tonight it's war. donald trump's big gamble that could steal the spotlight from fox and the gp debate holding its own event at the same time. high drama of the clash of the titans. >>> the zika virus spreading explosively in the americas. the world health organization calls an emergency summit warning that millions could be exposed. >>> nbc news exclusive richard engel in iran, with a scientist at the nuclear negotiating table with the u.s. revealing the secret conditions set by the supreme leader himself. >>> fixed game. you try to get tickets to a concert or big game, but they sell out immediately. reason why you're getting shut out. >>> and makeover barbie. the biggest change in the history of an american icon. "nightly news" begins right now. >> announcer: from nbc news world headquarters in new york, this is "nbc nightly news" with lester holt. >>> good evening. to a lot of people, the republican race for president may be feeling more and more like a reality show tonight, starring a man that

ashore. "nightly news" begins now. >>> from nbc news world headquarters in new york, this is "nbc nightly news" with kate snow. >>> good evening. there's been no letup this weekend in donald trump's sharp attacks on his top democratic rival, and he's not just going after hillary clinton but her husband, the former president. bill clinton is due in new hampshire tomorrow, his first solo appearance to campaign for his wife. with the iowa caucuses four weeks from tomorrow, trump also found himself answering questions about a terrorist recruiting message that uses video of trump. we get all the latest tonight >> reporter: trump increasingly looking beyond his gop rivals and taking aim at the democratic front runner, no holds barred. >> they've created isis. hillary clinton created isis with obama. >> reporter: hillary clinton firing back today in new hampshire. >> you know, the republicans seem to have a particular fixation on blaming president obama and me for everything that happens in the world. >> reporter: trump is also tying clinton to her husband's past sexual infidelities. >>

>>> with these drop in temps a good time to download the nbc new york app because you can carry it with you wherever you go. perfect timing here that's it for news 4, new york. nbc nightly is next. >> we will see you tonight. >>> on this sun y night, new year's battleground. with 29 days to iowa, the war of words heats up between the front runners. what trump is saying about both hillary and bill clinton. and that terror recruitment video that uses trump's comments about muslims. >>> the standoff at a federal building occupied by armed anti-government activists in oregon. tonight, why they're outraged and vowing to continue their occupation for years. >>> day of rage in the muslim prominent clergyman, all part of a bigger struggle between religious rivals. >>> and saving the sea. the oceans drowning in plastic, but now a novel idea to collect all that garbage before it washes ashore. "nightly news" begins now. >>> from nbc news world headquarters in new york, this is "nbc nightly news" with kate snow. >>> good evening. there's been no letup this weekend in donald trump's sharp atta

the california coast. >>> where's the onse? nbc news has learned amid the toxic water crisis in flint, no pipes are being replaced. we ask the governor why not. >>> warning signs for pregnant women and mothers of newborns. a big announcement from doctors about >>> and remembering abe vigoda. sadly, this time it's for real. from "the godfather" to "barney miller," the legendary actor is gone. "nightly news" begins right now. >> announcer: from nbc news world headquarters in new york, this is "nbc nightly news" with lester holt. >>> good evening. time is short, and the to-do list is long for the men and women running for president. in just six days we will be counting actual votes in iowa, but in the final stretch it's all about the polls, and tonight they appear to confirm a dramatic reversal of fortune among the two republican front-runners. donald trump now ahead in a state that once seemed to be ted cruz's to lose. and more worrisome for the cruz camp is trump is lining up what could be key endorsements. there's high drama in the democratic contests, too. we've got both races

the bay area. that's that. >> good news there. >>> thank you so much for joining us. nbc "nightly news" is coming up next. >> hope to join us at 6:00. >>> tonight, moment of attack. a suspected terrorist caught on camera spraying bullets on crowded sidewalks, those around him run for cover. at least two killed. tonight the manhunt is on. >>> forced to testify. the wife of bill cosby loses her battle to avoid deposition in one of the civil suits against her husband. and cosby breaks his silence for the first time since he was criminally charged. >>> flood catastrophe we're in the air over the midwest flood zone. thousands of homes still under water. millions of people at risk from the deadly fast-moving waters that have already done so much damage. >>> and unforgettable. she was music royalty. the daughter of an icon whose voice brought her fame in her own right. remembering grammy award-winning singer natalie cole. "nightly news" begins right now. >>> good evening. on this new year's day, there was fear across israel's second largest city, tel aviv, as authorities launch a manhunt