We have heard from senator sanders about our president , i expect from republicans. That is a low blow. Democrats square off over president obama. Have you ever disagreed with a president . I suspect you may have. Senator dont listen to donald trump. Really. Negotiating a deal in another country is not Foreign Policy experience. We have a frontrunner candidate that disparaging women and hispanics. Pushes i do not believe he is a true conservative. These people are stupid the united states, russia and other world powers have reached an agreement on a cessation of hostilities in syrias civil war. Foyer people remain hospitalized this morning after a machete attack in 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 signs of a before the accident of the breakthrough of lets take a listen. Hello the top half of the country in the northern states is affected. Pope begins a seven day visit to latin america. Finish preparations going on in all that. That is donald trump signing a baby. Look at these people. I also love going on red poses. 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 in front of your eyes. On cbs this morning. This sunday is valentines day. I dont always know what to y any more. The day women all around the world wait eagerly to discover the new ways their husbands boyfriends will disappoint them announcer this portion of cbs lets go places. Welcome torning. The democratic president ial race is getting tighter. Hillary clinton and Bernie Sanders found more issues to fight about at last nights this was their last showdown before the nevada caucuses and South Carolina primary. The candidates reached out to minority voters who are about toole in the campaign. Nancy cordes is at the university of wisconsinmilwaukee where she s debate. Reporter good morning. Everyone was wondering if Hillary Clinton would retool her message after her big loss in New Hampshire and the answer is she did she of the sanders world view and she acknowledged that the economy is rigged in favor of the 1 . But she also went into detail hinks that his very ambitious plans to fix it wont work. I am not a singleissue candidate and i do not believe we live in a country. Clashed over health care, wall street donations, and their loyalty to the president. And many people will actuallyhan they are right now. Final thought, senator . I think accurate inact accurate. Calling the president weak and a disappointment. Have youh a president . I suspect you may have. One of us ran against barack obama. I was not that candidate. Reporter the debate was in wisconsin but the candidates ed on the next primary in South Carolina, where africanamericans could decide the outcome. So Race Relations would be better under a sandershan they have been . Absolutely. Because what we will do is say instead of giving tax breaks to billionaires, we are going to jobs for low income kids so they are not hanging out on street corners. Legacy of the nations first black president. The kind of criticism that we have heard from senator about our president , i expect from republicans and i could not expect from someone running for the democratic succeed the president of the united states. Madam secretary, that was a low reporter i think once im in the white house, we will have enough Political Capital to be able to do that. Re not in the white house yet. Reporter that exchange reminded a lot of people of that Famous Exchange from 2008 when told Hillary Clinton she was, quote, likeable enough. Clinton was asked last night, gayle, why she lost among women in New Hampshire. She said her goal was to women to make their own choices, for somebody else. Thank you very much, nancy. The republican candidates will meet South Carolina for a cbs news debate. Most of them are already in that key state criticizing each other. And pitching voters who will go to the polls a week from but donald trump was hundreds of miles away last night and he was speaking to about 10,000 fans at a rally in baton rouge, louisiana. Man is outside of the peace center in greenville, South Carolina, the site of saturdays debate. Reporter the stakes are high here and republican candidates are certainly uppingd of tomorrows gebt debate. Donald trump was in louisiana last night but set his sights squarely on South Carolina. We have agreat place. South carolina. I think we will do very well. Reporter from the campaign trail to the airways South Carolina is looking like a fiveman slug fest. Dont listen to donald trump. Dont listen to donald trump. Jeb bush has no foreign time being negative. How do you think donald trump going to washington will solve anything . Bushis not a true conservative. These people are stupid reporter its donald trump who is emerging as a primary target. I just hope yount believe the crap because its all crap, okay . They are lies reporter trump taking time to sign a baby at hisstruck a softer tone yesterday and criticized an ad pulled by ted cruz. The love. Here. Yes, its donald trump. Its you and your cronies and reporter antitrump superpac is distributing what they call a voters guide and switching Political Parties and ask can weonald trump to stand strong on key conservative issues . And been that way a long ter chip is in South Carolina where a local paper has set up a website to track underhanded tactics. This is for the long haul and if you come out of this primary and youre you can you can handle it on the national stage. That is part of it. Its a testing ground. Reporter so far at these ush has been the no aggressive on taking on trump. That is expected to change tomorrow night. Charlie, bush is also bringing in reinforcements his former president george w. Bush will campaign with him on monday. We have inside the peace center, John Dickerson, ator for tomorrow nights debate and kim strasle will be one of the pannists. Reporter let me gib with the republicans and talk about the fights in the gop taking place now in South Carolina. Cruz versus trump. Ell, thats right. So youve got cruz versus trump. Then youve got the battle to be the alternative to cruz and that is at least two fights. Re fighting to be the alternative hope to take on trump or cruz. Its basically three fights and its ranging all over the place on issues from veterans to there is some talk of who has better christian values and then, of course, there is the competency question, who has theested and who can handle the presidency once they get there. We keep hearing that george bush is hitting the road for hist an asset or liability for him, do you think, in South Carolina . Well, South Carolina is a came back and in 2000 against john mccain and a lot of history here and a bit of organization here. Also the veterans here. There is ahim as a wartime leader. And also just the good feeling about the bush family. For the kind of voters that jeb urn out, its a good thing. He was even bragging hes a member of the establishment because of his brother and his father. Not something any candidate is doing this t impact has the previous South Carolina . Trump looks like he is still way up and way ahead. Its a little still a little early for that impact to be fully known. But at least in one surveythis morning, and you know how these things are quite volatile, he is still way up. Kim, what are you looking for . N here, this is going to be a very different race than it has been in iowa or New Hampshire, because south it more of a varied state. So there is a lot of talk down here because its a ma 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 ilitary presence here. So Foreign Policy is going to play a big role, a bigger role than it has in the past. But, also, those values voters community, we are back in a place after New Hampshire where that is, again, a very big focus and you hear different than what we have had up in this now. These are postdebate questions. Postdebate from New Hampshire and postresults from new about marco rubio . Has he been slowed down significantly . I think he is certainly been slowed down and he knows it. He admitted it. Have to come down and look as though he is nimble on his feet. Be able to ask answer questions and not sound he has come out more aggressive down here and hitting at his competitors more harder, particularly trump. Ing all of these guys had held back their fire on trump and gone after emp each other a lot but now he top guy and he has a lot of incoming. Thank you, John Dickerson and kim good to see you. Thanks, gayle. John dickerson and major candidates at tomorrow debate and starts on cbs at 9 00 eastern and 8 00 central. Then on face the nation john interviews donald trump and marco rubio here on ils this morning about the temporary ceasefire. John kerry says the pause inext week. The deal will allow food and humanitarian aid will reach to be et brennan has been told the deliveries could begin as early as today. Rning. Reporter this is the first ceasefire agreed on by all of the countries involved in the Syrian Civil War but its success is still doubtful, russians say they will continue their air strikes against terrorist groups, which they have said before, while also targeting americanbacked meanwhile, isis and other of this agreement. Syrian civilians ain, paying with their blood, as the regime claws back territory from rebel fighters. Russian air strikes, which only started in september, seem to ance in syrias fiveyearlong civil war giving the regime the upper hand. This week, regime forcesassault on the town of tall rifat which had been a stronghold for the rebels, some of them armed by the u. S. We metbalul who runs a school in telerefat. The shelling and air strikes are us. Homes are destroyed and childrens bodies lie in shreds on the ground. Forces with help nearly enincluded aleppo. 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 siege by the regime. More than 40 people there have starved to death. Tens of thousands of fled the new offensive and tried to cross this border into the safety of turkey. But turkey already has more thanuges and is reluctant to take any more. Holly williams along the border, thanks. The u. S. Government is growing concerned that isis is usingapons. We have a number of of reporter artillery shells . Sure. Reporter isis has access to chemical artillery shells . There are reports that isis hasto chemical precursors am nirks that they can use. That isis has the ability to manufacture small chlorine and mustard gas. And the capability of exporting those chemicals to the west . I think there is always for that and why its so important to cut off the various transportation routes have used. Reporter are there american right now hunting this down . The u. S. Intelligence is actively involved and being a part of the effort to destroy isil and get as much insighthat they have on the ground inside of syria and iraq. More of scotts interview sunday on 60 minutes. The cia director tells scotthomeland security, dealing with rogue States Sunday on cbs. Sources tell cbs news that rs are looking into a brutal rampage in ohio had any connection with radical groups. Police say a man with a macheteed several customers inside a columbus restaurant last night. The man was shot after a chase from the police. Jeffwas more. Reporter cbs news has learned that investigators have identified the suspected attacker as mohammed barry. Investigators are reasoning downg to determine if the attack is somehow tied to terrorist organizations. He came to each table started hitting them. Reporter witnesses describe the bloody scene at the middle Eastern Restaurant nazareth in t night. A man armed with a machete stormed in and marched from tabletotable striking diners. This was a brutal attack. Are just there having dinner and starts attacking them. Reporter karen bass was here were tables and chairs overturned. There was a man on the floor bleeding. There were there was blood on the floor. There were awful. It was just carnage. Reporter police say the suspect visited the restaurant and talked with an employee earlier in the day. Clear what the discussion was about. Investigators say less than an hour later, he came back and began his violent he second time, nothing was said. He just simply came in and started the attack. Ere taken to the hospital. One person in Critical Condition is expected to survive. The suspect fled and after a chase, investigators say he got out of his vehicle, armed with a machete and a knife. The officers. Another officer and a cruiser fired a couple of shots at him and put him down the suspected attacker has a somali background and officials believe he may have traveled internationally toll early on in this investigation, but this morning, Law Enforcement is concerned that this incident has the hallmarks of the type ofst attack that they have been working to stop. Scary, indeed. Thank you, jeff. There was a major sicanairlines jet headed to phoenix. American flight 564 was forced to make an Emergency Landing yesterday at los angeles the airbus a319 took off from san jose. American says the smoke was caused by a hydraulic fluid was taken to the hospital. Millions in the east are bracing for the coldest weekend of the winter. Itsh that a massive water main break in scranton, pennsylvania, quickly covered the road and the trees with a sheet of ice. Polar vortex will make temperatures plunge up to 30 degrees below normal. S 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 those of you who have pets at the table, you need to put on their booties and their coats, when you take them for a walk. Charlie . 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 potion to america. First, its time to check your local weather. Samantha our big story for only in the 20s and feels more like the Single Digits this afternoon. No problems weatherwise for the morning drive in. Its your evening commute im concerned about. We could see snowshowers starting as soon as 2 00, 3 00, and then continuing into tonight. Bitter cold tonight with snow as we fall down to about 4 degrees. The windchill could get down to 20 below tonight. How much snow are we going to see . 1 to announ this morning sponsored by kay jewelers. Urfers stack up to the men in the sport . Ahead, the controversy sweeping through a massive surf competition. Morning right here on cbs this morning. Announcer this portion of cbs this morning sponsored by jcpenney. Get what you love at theyou love only at jcpenney here at persil. The Top Notch Team of stain experts has performed over ten thousand stain evaluations to prove persil delivers a premium clean. Weve mand goji berries. And one. Persil proclean. Hey, jesse. Who are you . Im vern, the orange money vern from voya . Vern from voya. Why are you orange . Thats a little weird. Really . Thats the weird part in this scenario . 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Tonight 200 luminary ies will be september up by neighbors on the street he grew up on. There are two people in custody for the murder. Police are still looking for one suspect. Here with a look at the very cold forecast is Samantha Roberts. Sam. Samantha cold is right. We have a windchill advisory for almost the entire forecast region from tonight through sunday morning. A prolonged period of subzero windchills. They may get down to 20 below tonight. Not the actual air temperature, but how it feels on your exposed skin. Could feel like 20 below. I mean, thats really cold. Not quite that cold during the day. 24 for a high, feeling like the nd gentlemen, as you know, this sunday is valentines day. Im sorry. Thats a pain. If youre in a longtime relationship, im sorry. That is a ave been dating someone two weeks ago, im sorry. That is the worst of all three. You might get a card if you started dating two weeks ago. It depends on how much you want the relationship to accelerate. Maybe its been a good two weeks. Oh, yeah. Bout acceleration we have been together four years. I aint got nothing from you. Just sayin. Thank you morning. Welcome back to cbs this morning. Working hard. Ur, donald trump criticized the pope to push immigration. Why the gop frontrunner says the pope doe