I do not believe hes a true conservative. These people are stupid. The United States, russia, and other world powers have reached an agreement on the cessation of hostility in syrias civil war. A machete attack at an ohio restaurant. The suspect was fatally shot. Scientists say they found Gravitational Waves or ripples in the fabric of space time. The discovery is being hailed as the greatest scientific breakthrough of the century. Lets take a listen. Hello extreme cold. Temperatures dropping dangerously cold. The top half of the country. Up in the northern states affected. The pope begins his sevenday visit to latin america. Putting the finishing touches on mexico city. All that that is donald trump signing a baby. Look at these people. I also love going on red give me your blue steel. And all that matters. Charlie rose received a big honor for excellence in broadcast journalism. You do not want to be on television as long as i have because you can see yourself aging right before your eyes. On cbs this morning. This sunday is valentines day. I dont always know what to do on valentines day anymore. Women wait to discover all the new ways their husbands and boyfriends will disappoint them. Announcer this mornings eye opener presented by toyota, lets go places. Morning. The democratic president ial race is getting tighter. Hillary clinton and Bernie Sanders found more issues to fight about at last nights debate. This was their last showdown before the nevada caucuses and South Carolina primary. The candidates reached out to play a larger role in the campaign. Nancy, good morning. Reporter good morning. Everyone wondered whether Hillary Clinton would retool her message after New Hampshire, and the answer is she did. She embraced part of the sanders world view saying the economy is rigged in favor of the 1 , but she also went into detail about why she thinks that his ambitious plans to fik s tos to fix it wont work. I am not a single issue candidate and i do not believe country. Reporter clinton and sanders clashed over health care, donations, and their loyalty to the president. And many people will actually now. Final thoughts . That is inaccurate. Lets not insult the people. People arent dumb. Calling a president weak, calling him a disappointment have you ever disagreed with a president . I suspect you may have. I was not that candidate. The debate was in wisconsin, but the candidates were clearly focused on the next primary in South Carolina. Where africanamericans could decide the outcome. So Race Relations would be better under a sanders presidency than theyve been . Absolutely. Because what we will do is say instead of giving tax breaks to billionaires, we are going to create millions of jobs for low income kids so theyre not hanging out on street corners. Reporter clinton argued she would be the best heir to the president. I expect from republicans i do not expect from someone running for the democratic obama. That is madam secretary, that is a low blow. Reporter that was one of several exchanges that revealed a bruising race in New Hampshire. I think once im in the white house, we will have enough Political Capital to be able to do that. Secretary clinton, youre not in the white house yet. Reporter that exchange reminded a lot of people of that Famous Exchange from 2008 when barack obama told Hillary Clinton she was, quote, likable enough. Clinton was asked enough last night, gayle, why she lost among women in New Hampshire. She said the goal was to empower women to make their own choices, even if that choice was to vote for somebody else. All right. Thank you very much, nancy. The republican candidates will meet tomorrow night in South Carolina for a cbs news debate. Most of them are already in that key state criticizing each other. Donald trump was hundreds of miles away last night speaking to thousands of fans in baton rouge, louisiana. Were live at the site of julianna, good morning to you. Reporter good morning. Well, the stakes are high here and republican candidates are upping the ante ahead of tomorrows debate. Now, donald trump was in louisiana last night. But he set his sights squarely on South Carolina. We have a big one coming up. Great place. South carolina. I think were going to do really well. Reporter from the campaign trail to the airwaves, South Carolina is looking like a slug fest. Dont listen to donald trump. Really dont listen to donald trump. Jeb bush has no Foreign Policy experience, period. Jeb spends time being negative. How do you think trump going to washington is going to win anything . Jeb bush says i do not believe hes a real conservative. Reporter its donald trump emerging as the primary target. I just hope you dont believe the crap because its all crap. Okay . Theyre lies. Reporter trump taking time rouge rally struck a softer tone yesterday. Cruz wasnt feeling the love. Trump told politicians to steam roll the little guy. Reporter rolling out this here. You and your cronies in government. Reporter and an antitrump superpac is sending out a guide with trumps switching of Political Parties and asking can we trust donald trump to stand strong on key issues . Its bare knuckle, hard ball politics. Its been that way for a long time. Reporter chip is a republican operative based in South Carolina where a local paper has even set up a website to track underhanded tactics. This is for the long haul. If you come out of this primary and youre doing well, you can handle it on the national stage. Thats part of it. Its a testing ground. Reporter so far at these debates, jeb bush has been the most aggressive in taking on trump. Thats expected to change charlie, bush is also bringing in reenforcements. His brother will campaign for him. We now head inside the peace center. Kim strassel will be one of the panelists. Let me begin with the republicans and talk about the fights within the gop taking place now in South Carolina. Cruz versus trump. Well, thats right. So youve got cruz versus trump. Then youve got the battle to be the alternative to cruz and trump. Thats at least two fights. And then those fighting to be the alternative hopes to take on trump or cruz. Its ranging all over the place on issues from veterans to values. Theres some talk of who has better christian values. Then of course theres the competency issue. Whos been tested, who can handle the presidency. We keep hearing president bush is going to hit the road for his brother. Is that an asset or liability well, its you know, South Carolina is a place george w. Bush came back in 2000 against john mccain. Theres a lot of history here. Theres a bit of an organization here. Also the veterans here. Theres a connection between him as a wartime leader. And also just a good feeling about the bush family. For the kind of voters that jeb bush is trying to turn out, its a good thing. He was bragging he was a member of the establishment because of his brother and his father. Not something any candidate is doing this season. What impact has the previous debate and the New Hampshire results had on the numbers in South Carolina . Right now trump looks like hes still way up and ahead. Its still a little early for that impact to be fully known. But at least in one survey i looked at this morning and you know how these things are quite volatile, hes still way up. Kim, what are you looking for . I think this is going to be a New Hampshire. South carolina is more of a varied state. Theres a lot of talk down here because its a manufacturing state about jobs and the economy to a degree you probably dont have in iowa or New Hampshire. I think as john referenced, there is a big veteran and active duty military presence here. So Foreign Policy is going to play a big role, a bigger role than it has in the past. But also those valued voters in the evangelical community. We are back to a place after New Hampshire where that is a big focus. But this debate will be slightly different than what weve had up until now. These are postdebate results from New Hampshire. What about marco rubio . Has he been slowed down significantly . I think hes certainly been slowed down. He admitted it. Hes going to have to come down and look as though hes nimble on his feet. Be able to answer questions and not found formula. A lot harder. Particularly trump. All of these guys, they had held back their fire on trump. Theyd gone after each other a lot. Now you see them all sort of training their guns on the top guy. Hes got a lot of incoming. Thank you very much john dickerson, kim strassel. They will question the candidates in tomorrow nights cbs news president ial debate. Thats at 8 00 central. Then sunday on face the nation, john interviews donald trump and senator marco rubio. That is all this weekend right here on cbs. On cbs. Details this morning about the temporary ceasefire. John kerry says the pause in fighting the next week. The deal will allow food and humanitarian aid will reach to Margaret Brennan has been told which they said before while also targeting americanbacked rebels. Meanwhile, isis and other extremist groups are not a part of this agreement. Syrian civilians are once again paying with their blood as the regime claws back territories from rebel fighters supported by russian air power. Russian air strikes which only started in september seem to have tipped the balance in syrias fiveyearlong civil war. Giving the regime the upper hand. This week Regime Forces launched talriyat which had been a stronghold for the rebels. Some of them arm bid the u. S. We met abdul who runs a school as he crossed the border into turkey. The shelling and air strikes are random, he told us. Homes are destroyed and childrens bodies lie in shreds on the ground. Syrian Regime Forces with help from their ally iran have also nearly encircled aleppo. Syrias biggest city before this war began. If the ceasefire plan doesnt succeed, 300,000 civilians could be cut off there as they were in the town of media under siege by the regime. More than 40 people there have starved to death. Tens of thousands of syrians have fled the new offensive and tried to cross this border into the safety of turkey. 2 million Syrian Refugees and is charlie . Holly williams along the turkish syria border. Thanks. Turkish syria border, thanks. The u. S. Government is growing concerned that isis is using chemical weapons. We have a number of of chemical munitions on the battlefield. Reporter artillery shells . Sure. Reporter isis has access to chemical artillery shells . There are reports that isis has access to chemical precursors am nirks that they can use. Reporter the cia believes that isis has the ability to manufacture small quantities of chlorine and mustard gas. And the capability of exporting those chemicals to the west . I think there is always a potential for that and why its various transportation routes and smuggling routes that they have used. Reporter are there American Assets on the ground right now hunting this down . Actively involved and being a part of the effort to destroy isil and get as much insight into what they have on the ground inside of syria and iraq. More of scotts interview sunday on 60 minutes. About homeland security, cyberattacks and how the u. S. Is dealing with rogue States Sunday on cbs. Sources tell cbs news that federal investigators are looking into a brutal rampage in ohio had any connection with radical groups. Police say a man with a machete attacked several customers inside a columbus restaurant last night. The man was shot after a chase from the police. Jeff pegues was more. Reporter cbs news has learned that investigators have identified the suspected investigators are reasoning down leads this morning, trying to determine if the attack is somehow tied to terrorist organizations. He came to each table and just started hitting them. Reporter witnesses describe the bloody scene at the middle Eastern Restaurant nazareth in columbus, ohio, last night. A man armed with a machete stormed in and marched from tabletotable striking diners. This was a brutal attack. The man walks in to people that are just there having dinner and starts attacking them. Reporter karen bass was there. There were tables and chairs overturned. There was a man on the floor bleeding. There were there was blood on the floor. There were it was awful. It was just carnage. Reporter police say the suspect visited the restaurant and talked with an employee earlier in the day. Police say its not clear what the discussion was about. Investigators say less than an began his violent rampage. The second time, nothing was said. He just simply came in and started the attack. Reporter four people were taken to the hospital. One person in Critical Condition is expected to survive. The suspect fled and after a fivemile car chase, investigators say he got out of his vehicle, armed with a machete and a knife. He lunged across the hood at the officers. Another officer and a cruiser fired a couple of shots at him and put him down. Reporter the suspected attacker has a somali background and officials believe he may have traveled internationally to dubai in 2012 and still early on in this investigation, but this morning, Law Enforceme is concerned that this incident has the hallmarks of the type of lone wolf terrorist attack that they have been working to stop. Scary, indeed. Thank you, jeff. There was a major scare headed to phoenix. American flight 564 was forced to make an Emergency Landing yesterday at Los Angeles International airport. The airbus a319 took off from san jose. American says the smoke was caused by a hydraulic fluid leak. Eight passengers and crew were checked by paramedics but no one was taken to the hospital. Millions in the east are bracing for the coldest weekend of the winter. Its already cold enough that a massive water main break in scranton, pennsylvania, quickly covered the road and the surrounding homes and the trees with a sheet of ice. Polar vortex will make temperatures plunge up to 30 degrees below normal. Many low temperatures across the east today are in the teens. Tomorrow, they say will be even colder with lows expected to be in the Single Digits or below zero. The table, you need to put on their booties and their coats, when you take them for a walk. Charlie . You too. Would you like to come over and take a cold walk tomorrow . No. Youre so good at it, ill leave it up to you. Donald trump is taking on pope francis on immigration to america. First, its time to check your local weather. Announcer this portion of cbs every kiss begins with kay. Do female surfers stack up to the men in the sport . Ahead, the controversy sweeping through a massive surf competition. The news is back this morning right here on cbs this morning. Announcer this portion of cbs this morning sponsored by jcpenney. You love only at jcpenney here at persil. 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Today the flame is out, tomorrow my attitude. Your mother. Antonio. Antonio. Que . The stove. Its not working. Campbells microwaveable soups. Made for real, real life. After trying brookside chocolate, people talk about it online. Love at first taste. I would liquefy it and bathe in it. Curse you, brookside your nefarious plans have succeeded. Are we still talking about chocolate . Brookside. Love can cost you big time. At midnight and will continue to fall throughout the day. Saturday looks to be our coldest day with morning temps well below zero. Dangerous wind chills are possible, especially in northwestern iowa. Snow chances starting late saturday night continuing through sunday afternoon. It isnt out of the question to see 13 to close out the weekend with higher amounts in our northern counties. Once the weekend is over, it looks like we will be seeing some pleasant weather for early lower 40s. 3 3 good morning siouxland, im jacob heller. Heres a look at your morning news. 3 the sioux citys Childrens Museum is now open. The launchpad Childrens Museum at the corner of sixth and pearl streets officially opened yesterday morning. The process of getting the museum built took a long time. 3 this is. Been working on this project for so long, 3 its just to see it come to life. The launchpad Childrens Museum is open every day except monday. It costs 8 bucks to get in. Yearly memberships for the family start at 85 dollars. 3 they call it thrill hill. And the people who live along that dangerous sioux city street are still looking for answers. They met with city off