rules that are now taking effect? and an expansion of new york city's vaccine mandate. and the trump-fueled split in the republican party is worsening in georgia. an ousted u.s. senator and ally of the former president is now running against the top trump target. the state's gop governor. we want to welcome our viewers here in the united states and around the world. i'm wolf blitzer. you're in "the situation room." let's go straight to the white house and our chief national affairs correspondent jeff zeleny who is joining us right now. president biden is facing very significant new tests with both russia and china. and there are now new developments unfolding on both fronts. update our viewers. >> the white house is announcing a boycott of the 2022 winter olympic games in beijing. not for athletes but for u.s. diplomats. they are simply not sending a delegation to beijing next year, calling out human rights abuses. this is coming on the eve of a critical phone call between president biden and russian president vladimir putin. they are searching for a diplomatic solution to the rising tensions on the ukraine border, but they're also talking about new tough economic sanctions. tonight president biden preparing for critical talks tuesday with vladimir putin as the u.s. weighs new sanctions in hopes of deterring russia from invading ukraine. the president speaking today with european allies to present a united front on imposing those economic sanctions against russia as new u.s. intelligence obtained by cnn estimates moscow could invade ukraine as soon as next month. >> this is the moment for russia to pull back their military build up at the border. that diplomacy is the right path forward here. >> reporter: the russian president is expected to issue an ultimatum of his own. a written guarantee from biden to oppose nato. and weapon systems from the military alliance from expanding into ukraine. putin has called this a red line and an urgent threat to russian sovereignty. the virtual meeting between biden and putin comes at a low point in relations between the two countries. it's their first conversation since july, following their face-to-face june summit in geneva. >> i did what i came to do. >> reporter: since then, tensions have soared. based on these images obtained by cnn, new intelligence reports estimate russia could amass 175,000 troops on the border with half already there. white house press secretary jen psaki saying the sanctions are aimed at putin's inner circle. >> we've consulted with our allies and believe we have a path forward that would impose significant and severe harm on the russian economy. you can call that a threat, a fact, preparation. whatever you want to call it. >> reporter: the escalation of troops on the ukraine border is reminiscent of the 2014 invasion of crimea. a brazen move alarming u.s. and western leaders. >> what i am doing is putting together what i believe to be -- will be the most comprehensive and meaningful set of initiatives to make it very, very difficult for mr. putin to go ahead and do what people are worried he may do. >> tonight tensions also escalating with china as the u.s. takes a rare step of imposing a diplomatic boycott of the 2022 winter olympics in beijing. >> the athletes on team usa have our full support. we will be behind them 100% as we cheer them on from home. we will not be contributing to the fanfare of the games. >> reporter: psaki said the president is intent on calling out forced labor and human rights abuses in china but the u.s. stopping short of a full boycott like the u.s. did in 1980 when president jimmy carter protested the moscow olympics, keeping american athletes from taking part in the games. >> i don't think that we felt it was the right step to penalize athletes who have been training, preparing for this moment and we felt that we could send a clear message by not sending an official u.s. delegation. >> reporter: so that diplomatic boycott certainly a symbolic move but a significant one as well that will complicate the tense relationship between the u.s. and china. now as for that phone call, scheduled for tomorrow morning with russian president vladimir putin, it's going to be a virtual meeting. and president biden spent some time this afternoon on the phone with european leaders and allies trying to get on the same page here before that conversation tomorrow. we do know that president putin is focused on ukraine joining nato. he does not want that to happen. he's looking for guarantees from the u.s. but a senior administration official tells us they are not accepting any red lines, even on this nato subject, wolf. >> jeff, i want you to stand by. i want to bring you back but i want to bring in kaitlan collins and cnn contributor evan osnos, a staff writer at the new yorker. also the author of the new book "wildland: the making of america's fury." putin is making demands. he's only gotten a lot more aggressive since he met with president biden in geneva back in june. you and i were there. what sort of tone do you expect president biden will take in this critically important video conference call with putin tomorrow? >> i think president biden is going to bring a pretty clear warning with him because the white house is hoping that russia will de-escalate here. while they don't believe president putin has made a decision to invade ukraine that it's looking like they could. if they wanted to, president putin could given you see u.s. troops surrounding three sides of ukraine. so that will be the approach that the white house is taking. the u.s. is taking during this conversation tomorrow. but i think president biden and president putin come at this with very different agendas. so the white house is going to be watching to see how many demands the russian president is making because you heard jeff mention there that one of their clearest ones they've made before is they don't want ukraine getting anywhere near nato. they don't want them joining. that's been a big complaint they've said that ukraine is getting too close to the west and that's been behind all of the actions you've seen lately. but the white house will be watching to see what else is involved in this conversation and what else the russian president brings with him. and president biden will be trying to talk about ways where they hopefully can de-escalate but they also have to be prepared for the situation that that wmay not happen. that's going to be a big focus of the conversation. we'll have to see what the outcome of it is going to be. >> evan, you are a biden biographer. how will the president draw on his decades of foreign policy experience, his longstanding relationships with key european leaders to address putin's brinksmanship that's unfolding right now? >> well, you know, in the case of their relationship specifically, joe biden and vladimir putin have a very low level of trust. i remember flying to ukraine actually with then-vice president biden in 2014 having a conversation with him on the flight home in which he expressed the fact he had never trusted this guy and i'm paraphrasing there. he told the story about how he met with him in the kremlin and said i looked into his eyes and didn't see a soul. so they are coming from a point where they know each other. they don't trust each other. and kaitlan raised a crucial point. this is also about the rest of europe. how is president biden going to draw on these other relationships? the united states has a lot of strong relationships in europe, and he can bring that to bear as a threat in effect against vladimir putin to say, if you do this, you will go into the deep freeze. you become a pariah and you don't want that. that's one of the things he has up his sleeve. >> jeff, the ukrainian defense minister predicts, and i'm quoting now, a bloody massacre if russia decides to invade ukraine. how wary is the biden administration of being dragged into a potential military conflict in light of a potential russian invasion? >> very wary, wolf. diplomacy is really something that this president, this administration is trying to turn to. and they hope work. so they're going to present a series of diplomatic alternatives. those include putting a financial squeeze on russia as well through the international financial system as well. there is no appetite here for military intervention. on a briefing earlier with a senior administration official, there was several moments of silence when that question was asked about a military solution to all of this. does the u.s. have the stomach for that? of course they're not ruling anything out, but they simply do not want to add another thing, which would be, you know, a significantly dangerous thing to the plate of this biden administration which is already quite full. so they hope diplomacy works in some respects but they see the intel there. they see the troops amassing on the border. that's why this phone call tomorrow morning, this virtual meeting if you will, without question, is the highest stakes, most critical conversation president biden has had since taking office with a foreign leader. things have not been as tense or at a low point in their relationship. we were all back in geneva for the summit in june. seems like a very long time ago for this president, wolf. >> kaitlan, in addition to russia, president biden is also juggling this growing tension with china. what more can you tell us about your excellent reporting on this diplomatic boycott by the u.s. of the beijing olympics? >> this is a decision that became pretty clear the white house was going to make several weeks ago. i think they had still been meeting and discussing it privately, discussing when was the right time to announce that, yes, the u.s. is going to implement a diplomatic boycott of those winter games in beijing in february of 2022, which means no government officials, of course, including president biden, will attend. and so this is something "the washington post" first reported on several weeks ago that this was under consideration. of course, ultimately it's a symbolic gesture, but the question is what message does it send not just to the world but also to china? and that is really what's driving this. and that's something that many lawmakers were calling on the white house to do in protest of those human rights abuses in china. >> evan, you spent years in china reporting on the latest developments. what's your analysis? >> i think one of the things to watch will be, what do other countries do now? the united states has come forward and said in a bold way they'll not send any diplomats, any officials. now what do other countries do? what does australia do? what about the united kingdom. you heard in china's response they said they'd have firm countermeasures in response. that's a vague threat but whats what that's directed towards is other countries. other people. what do individuals do? do business leaders do? so there's a lot of questions now that are going to begin to unfold. and the united states has made a big decision by going forward and doing this. and it's a reflection of the growing sense in washington that they could not stand by and allow it to be an olympics business as usual. >> escalating tensions with china and russia right now. guys, thank you very much. coming up, the latest very disturbing numbers. infections, hospitalizations and deaths from covid-19 are all climbing in the united states. p. oh, boy. carvana just doesn't seem to understand how the test drive works. they give their customers seven days. and if they don't like it, they give 'em their money back. wait, they take the car back? that's crazy! what if it was driven by like a zookeeper? or a mud wrestler? or a guy who's on the outs with the missus and he just needs a place to sleep for seven days? yeah. 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as of midnight last night, international travelers coming into the u.s. will have to show proof of a negative covid test within one day of travel into the u.s. that's narrowing the window from the previous requirement of a negative test within three days of traveling into the u.s. >> we know that travel is a big way that we spread not just the existing variants but also new variants from place to place so these new testing requirements will help. >> reporter: for the first time in two months, the u.s. is averaging more than 100,000 new cases each day. covid deaths are also on the rise in the u.s. largely among the unvaccinated. and an average of more than 1600 people dying each day. average daily deaths have not been that high in more than a month. >> we have a major -- if you are not vaccinated, delta will find you and you will get sick and you may end up in the hospital and may end up dying. >> reporter: so, too rising is the number of vaccinations. more than 2 million doses of the vaccine are being administered in the u.s. each day. >> it's a combination of folks being worried about both the delta variant surges that we're seeing and the omicron variant. >> reporter: u.s. officials have now detected the presence of the new omicron variant in at least 17 states. epidemiologist who led the response to omicron in south africa where it was first discovered gave an update to cnn today on that variant's rapid rate of transmission. >> the omicron variant is at a -- is doubling faster than any of the three previous waves. i have to say it's very early, preliminary evidence suggests that it is more transmissible. >> reporter: america's top infectious disease expert says while it's too early to make a determination, there could be some good news regarding the omicron variant and how hard it hits its victims. >> it does not look like there's a great degree of severity to it. >> reporter: america's surgeon general vivek murthy says another positive evidence is that unlike at the beginning of the pandemic we now have more tools and more knowledge to protect ourselves. still officials are anxiously waiting to see how the omicron variant really measures against our vaccines. wolf? >> brian, thank you very much. let's get more on all of this. joining us, dr. richard besser, former acting director of the cdc. dr. besser, thanks for joining us. as we see these trends here in the u.s. clearly right now heading in the wrong direction, just how concerned are you about the spread of this virus in the united states right now? >> you know, wolf, i have been very concerned about this. as we've been having more and more conversations about the omicron variant, it struck me that there's a general complacency and acceptance that a thousand people in america could die every day from the delta variant and that would be okay. but what if a new variant comes. i think we have to double, triple our efforts to reach people who haven't yet been vaccinated. to address their concerns. i think every single person who has a loved one who hasn't been vaccinated needs to talk to them and share their concerns. and recognize that, really, the largest risk for getting this infection, having severe infection and dying from this infection is not getting vaccinated. and it's so tragic when you have something that's clearly so preventable. >> and if you are eligible, get a booster shot. that's so critically important as well. new data does show, dr. besser, that the coronavirus positivity rate in south africa has jumped 24% since the omicron variant was detected. only two weeks ago. dr. fauci says early data on the severity of this variant is a bit encouraging. a bit encouraging. but just how worried should we be? >> well, you know, i think that the general approach to this has been the right one. you go at it hard. go at it strong. you take serious measures to try and protect communities, and then if the data shows that you can back off, then you start to do that. with encouraging signs, i would hope that things like travel restrictions, not allowing people in from certain african countries, that those would be lifted much sooner than some of the other restrictions. the measures to encourage people or require people to be tested within a day of traveling to the united states, i think that makes a lot of sense. travel is one of those risky things and you want to make sure the people sitting near you on a plane or coming into our country have been tested and are not spreading covid. but we need to make sure that vaccines are getting to every individual in every community and not give up on anyone who has declined vaccination so far. >> good advice as always from dr. besser. thank you very much for that. up next, a georgia republican who actually lost his senate seat earlier this year says the republican governor is to blame. now he wants to replace him. plus, a kentucky republican defends his truly eyebrow-raising family holiday card. look at this. he says the packlash will only make him double down. stay with us. you're in "the situation room." show—be the light show. t make your nights anything but silent. and ride in a sleigh that really slays. because in a cadillac, tradition is yours to define. so visit a cadillac showroom, and start celebrating today. ♪ ♪ ♪ well the sun is shining and the grass is green ♪ ♪ i'm way ahead of schedule with my trusty team ♪ ♪ there's heather on the hedges ♪ ♪ and kenny on the koi ♪ ♪ and your truck's been demolished by the peterson boy ♪ ♪ yes -- ♪ wait, what was that? 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because it dilutes their voting power. for instance, one of the statistics that the justice department says in this new lawsuit that was filed today, they say that about 4 million people were added to the texas population between 2010 and 2020. 95% of that growth was from latinos. texas added two congressional seats from that redistricting process, and of those two seats, both of them were drawn with a majority white voting population. so this was shown to -- the justice department says this shows this is a violation of section two of the voting rights act. and that's the reason why this lawsuit was filed. this is the second voting rights lawsuit that has been filed against texas in the last couple of months. and we can expect, wolf, that the -- you'll see more of these types of lawsuits. there are a number of states, including florida and arizona where the justice department is already weighing in on lawsuits against those redistricting maps. wolf? >> evan, thank you for that update. also tonight, a bitter republican showdown is brewing in georgia. the former senator and loyal trump ally david perdue has announced he'll challenge the incumbent republican governor brian kemp. joining us to discuss, cnn's chief political analyst gloria borger and former republican congressman charlie dent. what is perdue's entry into this race and the former president's expected endorsement tell you about trump's enduring power within the gop? >> his power is alive and well, wolf. the president, the former president, talks about how kemp is responsible for the loss of two seats in georgia when, in fact, we all know that it was donald trump who was responsible for the loss of two seats in georgia by suppressing the vote there, by telling people, you know, the election is rigged before that special election. so his republican voters didn't go out and vote. and it cost perdue his seat. now perdue is running against kemp in this primary. the president is expected to endorse perdue. so they are splitting the republican party and what this tells you about donald trump is that he really doesn't care about unity in the republican party. what he cares about is vengeance. and his eyes are set on kemp. and so he wants to put him out of power. >> good point. charlie, it's worth remembering that perdue lost his re-election bid earlier this year. to democratic senator jon ossoff. do you view this as the former president putting his interests clearly over the party's interests once again? >> oh, of course i do. gloria's analysis was spot on. to suggest that governor kemp and brad raffensberger who refused to -- who refused to violate the oaths of their office did the right thing in certifying the vote. that's not the reason that donald trump lost -- that perdue lost. perdue lost because donald trump said the system was rigged. that you couldn't trust the vote. he suppressed the republican vote and that cost him two republican seats. it seems to me that david perdue is doing this, running, because he wants to be governor and wants the trump endorsement and trump does have an outsized influence in republican primaries. and this primary fight will accrue to the benefit of the democrats. this is a year when republicans should do well, wind is at their back. it's a midterm. the election is about the democrats far more than the republicans but it's a sad state of affairs. >> we learned that devin nunes, the republican congressman from california, a key member of the house intelligence committees, former chairman at one point of the house intelligence committee, is resigning from congress in january. next month. in order to go to work for trump at trump's new media and technology business. what do you make of this? >> it's really kind of surprising. he's going to be the ceo of this newly formed company, but if republicans were to take over the house in 2023, nunes was set to be chairman of the very powerful tax writing ways and means committee. and that's a post that a lot of politicians covet. it's very, very important. and he's giving all of that up. he's been a loyal trump person for a very long time. and i think that he's been railing against social media and saying that social media is -- that it's biased against conservatives, particularly the people who run facebook and the like. so i think he probably sees this as an opportunity to run a very different kind of company, but he's giving up an awful lot in congress. he may be redistricted to a certain degree. charlie would know more about that than i, do but it was really a surprise. >> clearly, charlie, going to be making a whole lot more money at least in the short term running this new trump media operation. you're a former member of congress. what do you think? >> my thought is i've known devin nunes for a long time. we were pretty friendly but the evolution of devin nunes is striking. in 2013 he was working with me to stop -- to reopen the government. he called the freedom caucus back then, lemmings with suicide vests or those very conservative members who were shutting down the government for no good reason. and now he's evolved, obviously, with trump times and became one of trump's most ardent loyalists. so this is kind of striking to me. his seat is a very safe seat so i can't imagine that republicans will have trouble holding it unless it's changed dramatically in redistricting, which i don't think it will be. i'm not totally surprised he's going for this opportunity on this trump tv. that's where he is ideologically these days. >> he certainly is. it's not a surprise he supports trump. is a surprise a senior member like this, especially since there's a good chance the republicans, gloria, will be the majority in the house next year, is going to give up that seniority. >> as i was saying, being chairman of the ways and means committee is important. and it's a thing a lot of house members -- i'm sure charlie dent would have liked to be chairman of the house ways n means committee. >> appropriations. >> it's a top leadership post that he is -- that he is saying good-bye to. >> all right, gloria, thank you. charlie, thanks to you as well. we'll stay on top of this story as well. just ahead -- the michigan high school shooting suspect and his parents all now behind bars in the same jail. all in isolation. and all under suicide watch. which is a lot. so take care of that heart with lipton. because sippin' on unsweetened lipton can help support a healthy heart. lipton. stop chuggin'. start sippin'. healthier is seeing a healthcae pro whenever you may need one. doctor: the fever should break... or...trying to. ♪ ♪ this is what healthier looks like ♪ for people living with h-i-v, keep being you. and ask your doctor about biktarvy. biktarvy is a complete, one-pill, once-a-day treatment used for h-i-v in certain adults. it's not a cure, but with one small pill, biktarvy fights h-i-v to help you get to and stay undetectable. that's when the amount 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oxford high school officials didn't search the suspected shooter's backpack and locker when they had legal grounds to do so. this as cnn's alex field reports. officials are keeping a watch over both the suspect and his parents at the county jail. alex, update our viewers. what can you tell us? >> look, they can't see each other. they can't speak to each other but they're all aware they're in the same jail as this criminal case moves forward at the same time we're seeing new investigations being launched into what happened in the high school behind me. new calls to try and understand how warning signs were missed and what red flags appeared before that attack last week. behind bars in isolation and all under suicide watch, tonight the oakland county jail keeping a close eye on a 15-year-old high school shooting suspect, ethan crumbley, and both of his parents. >> all of this could have been prevented if he hadn't had access or if just one of those parents had said, i'm concerned about what i'm seeing right now and i also want you to know we just bought him a gun for christmas. and that didn't happen. >> reporter: jennifer and james crumbley made no mention of a gun at a meeting in oxford high school hours before the shooting. their son was never searched for a weapon, despite a series of red flags. >> there was absolutely evidence to suggest that there was an indication he might harm somebody and even kill somebody. >> reporter: the oxford school district now defending a decision to send the 15-year-old back to class shortly before he allegedly started firing shots in crowded hallways saying at no time did counselors believe the student might harm others. that after a teacher flagged him on the morning of the attack for making a gruesome and graphic drawing of a shooting. the shooter insisted the school says that it was part of a video game he was designing. when he and his parents were called into the meeting to discuss it. a day earlier, the shooter telling a counselor shooting sports are a family hobby after a different teacher reported him for searching on his phone for ammunition. a third party investigation of events leading up to tuesday's attack is under way according to the district. the michigan attorney general's office is also offering to conduct a full and comprehensive review into the events leading up to the shooting. there's still the question of whether school officials could face charges. >> it's under investigation so, no, we haven't ruled out charging anyone. >> not guilty. >> reporter: the shooter's parents pleading not guilty to four counts of involuntary manslaughter during an arraignment over the weekend. jennifer and james appearing for court via video hours after they were taken into custody in the middle of the night from a detroit warehouse where authorities say they were hiding. the all-out manhunt for the crumbleys kicking off friday afternoon after the announcement of an extremely rare move from prosecutors to charge the parents of a school shooter. the victims of the attack honored over the weekend. the detroit lions dedicating the game ball to the oxford community. >> those names for all those, you know, will never be forgotten and they're in our hearts and our prayers. >> reporter: along with that moving tribute for the lions, the university of michigan's football team also paid tribute to the oxford community and to high school football player tate myre who was killed in the shootings inside oxford high school. the team wearing the number 42 in honor of tate and amazingly, wolf, going on to score 42 points in the game. how about that? funerals for the victims starting this week. the funeral for tate myre to be held tomorrow. >> so, so heartbreaking. alexandra field on the scene for us. thank you very much. coming up, an historic flooding triggered by climate change now posing a major threat to the nation of sudan. cnn goes in depth when we come back. rotisserie-style chicken, new 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(sha bop sha bop) ♪ ♪ ♪ alexa, play our favorite song again. ok. ♪ i only have eyes for you ♪ you booked a sunny vrbo ski chalet. with endless views of snow-covered peaks. ♪ ♪ a stove that inspires magnificent hot cocoa. and a perfect ski-in ski-out. but the thing they'll remember forever? grandpa coming out of retirement to give a few ski lessons. the time to plan your get together is now. ♪ ♪ find it on vrbo. climate change is triggering flooding of biblical proportions in south sudan right now where rising water has displaced hundreds of thousands of people. cnn's chief international correspondent clarissa ward is on the scene for us. this is a very dire situation that clearly could get even worse. >> that's right, wolf. what's really extraordinary here is that these floods hit back in the summer and the waters are up to people's necks in some parts of south sudan. roughly 800,000 people already affected. disease is spreading. and rainy season is just five months away. just four months ago, this was a bustling town of 11,000 people. then the floods came. biblical in scale. leaving it submerged under water and largely cut off. as we arrive in ding-ding, there are few signs of life. just some belongings stashed in the tree tops. the only protection from the waters that have inundated much of south sudan. so this entire town has been flooded since august, and the waters are still getting higher and higher, even though the rainy season is now over. >> hi. >> reporter: when they catch sight of us and want to talk. where are your homes? have your homes been destroyed? they survived years of vicious civil war here. but these floods may pose the greatest threat yet. they tell us their crops have been completely destroyed. so what are you living on right now? what are you surviving on? the lilies? the lilies? the water lilies? >> yeah. >> reporter: many people have water-borne diseases. the wells were all covered, so we have to drink this water. while south sudan is no stranger to seasonal flooding, unity state hasn't been hit like this since the early 1960s. scientists say the floods have become much more intense and unpredictable in recent years in part because of global warming. >> james, hi james. >> reporter: james loyne is one of hundreds of thousands that have been displaced. he agrees to show us what's left of his family home. >> oh, my god. that's your motorcycle. >> yes. >> reporter: nothing is left except for his children's drawings on the walls. since the conflict erupted, we've never had a rest. we've been constantly running, displaced. our children have had no relief from the dangers. now he's forced to flee once again. the journey to the promise of dry land is long and arduous. the lucky ones travel by boat. most swim or wade, moving slowly but purposefully through the muddy waters. some push makeshift floats piled had with family members and possessions. wu come across a group of women whose raft is stuck in the muck. narika tells us they left her destroyed home four days ago. >> have you been pushing this raft for four days? yes, they tell us. along the way they say their food ran out. >> how old is your baby? >> five to six months. >> are you worried about your children? yes i'm worried, she says. that's why we keep moving. >> reporter: they still have several miles to push before they reach this narrow strip of dry land. according to unicef, some 6,000 people have now settled here, completely dependent on aid to survive. >> they don't have latrine. they don't have enough food for them to eat. >> they don't have bathrooms, don't have food, and there are more people arriving every day. >> people are continuing to be displaced and continuing coming. >> you're obviously doing everything you can. is it enough? >> it is not enough. that's the reason why we are hoping for donor community, children get schools, health care, latrine services. we prevent them to die. >> reporter: as infected stagnant waters continue to rise, so do diseases like diarrhea and hepatitis e. malnutrition in children is now at its highest level since 2013. those who make it all the way to the state capital bentu find little sanctuary. some of the main roads have been turned into waterways, cars replaced by canoes. just a mile further, the ghostly remains of what was once a commercial hub. >> this used to be the central shopping area in town, as you can see, completely destroyed. >> reporter: according to authorities, 90% of unity state has been impacted by these floods. here the effects of climate change aren't a hypothetical problem in the future, but rather a real disaster in the present. >> we are fighting for the water not to reach here. >> reporter: minister lamb says local authorities were completely unprepared and are now unable to cope with the size of the crisis. >> we don't have any system for survival. >> how much longer can you cope with the situation as it stands? >> realistically i can't tell you. we don't know. we're just worried about the next rain because we're told the water behind me will not go now. they will not dry up. it's going to take a while because it's deep water. >> they don't have long. the next rains are expected in may, and if the current waters don't recede, the fear is that this area will be wiped off the m map. dykes are being built to try to hold back the encroaching waters. the handful of diggers are no match for the vast flooding. breaches are common leaving many with no choice but to take matters into their own hands, hastily providing protection for their endangered homes as the waters quietly continue to rise. wolf, it's important to remember, this is the world's youngest country. there are barely 125 miles of paved road here in south sudan. they are not responsible for even a fraction of the global emissions, and yet they are paying a very heavy price as a result of global warming. wolf. >> they certainly are. clarissa ward doing amazing reporting for us as always. thank you very, very much. there's more breaking news we're following. we're learning right now that one of the highest ranking former trump officials is now cooperate being the house select committee investigating the january 6th insurrection. this is a potentially very significant development. make your nights anything but silent. and ride in a sleigh that really slays. because in a cadillac, tradition is yours to define. so visit a cadillac showroom, and start celebrating today. ♪ ♪ the new sensodyne repair and protect with deep repair has the science to show that the toothpaste goes deep inside the exposed dentin to help repair sensitive teeth. my patients are able to have that quality of life back. i recommend sensodyne repair and protect with deep repair. as a professional bull-rider i'm used to taking chances. but when it comes to my insurance i don't. i use liberty mutual, they customize your car insurance, so you only pay for what you need. wooo, yeaa, woooooo and, by switching you could even save 665 dollars. hey tex, can someone else get a turn? 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