to unite different factions on the ground in syria. >> pelley: holly williams, thanks. so what can the u.s. do to stop the war? for that we turn to margaret margaret? >> reporter: well, today the u.s. is trying to broker an immediate ceasefire. today secretary kerry pushed both russia and iran to stop attacking syrian civilians in aleppo and allow in aid to besieged areas, but the russians haven't been quick to agreed agree to that. in fact, vladimir putin's military has cut off supply lines to the u.s.-backed rebels, and u.s. officials warn that assad and it leaves the u.s. with little leverage in a war president obama has resisted getting involved in for five years now. >> pelley: margaret brennan at the white houseful margaret, thank you. today cleveland mayor frank jackson apologized to the family of tamir rice after the city billed his estate $500 for ambulance services. the city also tore up the bill. in 2014 a cleveland cop shot rice, who was 12. he was holding a gun that turned out to be a toy. he died the next day at the hospitals. the officer was not charged.

holly williams has been reporting on the horror of this war, which is also captured in these pictures you're about to see. >> reporter: another child victim of a war that even adults struggle to understand. this little boy was trapped under a slab of concrete until volunteer rescue workers managed to free him. we can't independently verify these videos, but they appear to of a brutal offensive by the syrian regime around the city of aleppo, backed by russian air strikes. with the help of its ally iran on the ground, the syrian regime has almost entirely surrounded aleppo and is now less than 20 miles from the turkish border. that's where tens of thousands of civilians have fled for their lives, though they still haven't been allowed to cross into safety. turkey has absorbed more than two millan syrian refugees and now says it has reached its limit, leaving these exhausted people stranded. mohamad eid hussein al ahmad is a spokesman for a syrian rebel group that's fighting the regime in aleppo and told us they have now lost their main supply route. how long can you hold out? how long i

and holly williams is following this desperate fight. >> reporter: from bep neath the rubble of a shattered building a little boy waves his hand, telling rescue workers he is still alive. second later they free him. bloodied, but breathing. they also dig frantically for a baby. it's too late. we can't independent leap verify these videos. but they aper to show the syrian regime's new offensive in aleppo province which is backed by russian air strikes. hassan haj ali, a rebel commander who told us his men have received weapons from the u.s. and are trying to fight off the assault. when the regime kills women and children, he told us, they're telling syrians to get out of rebel held areas. as the regime and russia bombard aleppo province, the battlefield there has become even more chaotic. now there is evidence that groups supported by the u.s. have started to fight each other. as they vie for territory. hassan haj ali with u.s. backed clashing with kurdish fighters and the kurdish group also receives american support. our american friend said they would put pressure on the kurd to stop the c

holly williams is in turkey tonight. holly, tell us some more. >> reporter: well, scott, this would be the first cease-fire in syria's civil war, agreed to by all of the key outside countries involved in the conflict. and hopefully, it will allowho food and aid to get into places that are cut off right now because of fighting. but it's not clear whether the syrian regime will actuallyll cease-fire may not start for another week, which allows the regime to continue its offensive around the city of aleppo, whichy has already driven tens of thousands of people from their homes. there are fears that aleppo could soon be besieged by the regime, just like the town of madaya, where more than 40 people have already starved to death. those are the regime's tactics,me and in an interview released today, the syrian president, bashar al-assad, vowed to retakeowed the entire country. he also rejected allegations of war crimes. now, the regime's offensive is backed by russian airstrikes and russia says despite cease-fire it will contin

holly williams reports from along the syrian border. reporter: syrian civilians are once again paying with their blood as a regime clause back territory from rebel fighters. supported the russian airpower. this week regime forces launched an assault on a town which had been a stronghold for the rebels. some of them armed by the u.s. we met this man who runs a school in the town as he crossed the border into turkey. michelle again airstrikes are random, keith hold us. bodies lie in shreds on the ground. if the cease-fire plan does not succeed, 300,000 civilians could be cut off there as they were the regime. to death. tens of thousands have fled the new offensive and tried to cross turkey. turkey already has more than 2 million syrian refugees and is reluctant to take anymore. holly williams, cbs news, on the turkey syria border. mollie: five years has created europe's refugee crisis since world war ii. more than a quarter million conflict. still they come roses, , chocolates, dinner and diamonds. we'll tell you men out there what to exp

holly williams has been reporting on the horror of this war which is also captured in these pictures you are about to see. >> reporter: another child victim of a war that even adults struggle to understand. this little boy trapped under a slab of concrete until a volunteer rescue workers managed to free him. we can't verify these videos but they appear to show the death and brutal offensive by syrian regime around the city of aleppo backed by russian air strikes. with the help of its ally, iran on the ground, the syrian regime has almost entirely surrounded aleppo. and is now less than 20 miles from the turkish border. that's where tens of thousands lives. though they still haven't been allowed to cross into safety. turkey's absorbed more than 2 million syrian refugees. and now says it has reached its limit. leaving these exhausted people stranded. mohamed hussein al-ahmed is spokesman for a group and now they have lost their supply route. how long can you hold out? how long is it until aleppo falls to the regime? >> translator: i can't say for aleppo falls to the regime. or iran and

holly williams in istanbul for us tonight, holly, thank you. now, one of of college basketball's winningest programs postseason. jim axelrod reports on what's behind the drastic action by the university of louisville. >> reporter: more than 40 champion, rick pitino and his louisville cardinals are now mired in a sex scandal that will leave the team sidelined for the postseason. >> i've had my share of crying and didn't want to go through it anymore, but this is certainly a night of extreme pain. >> reporter: the ban was imposed by the school's president. >> this is a decision that's as harsh as anything i've seen. >> reporter: in a book published last october, an escort named katina powell claimed a basketball staffer named andre mcgee paid her and other strippers $10,000 to throw parties that included having sex with players and recruits. louisville got the results of their own investigation yesterday. >> this is a team that is very much favored to go very far in the tournament, so this penalty is quite substantial, much more-- it comes with c

holly williams shows us what is at stake. >> reporter: syrian civilians are once again paying with their blood as the regime claws back terrible from rebels supported by russian aircraft. this week forces launches an assault on a town which had been a stronghold for the rebels. some of them armed by the u.s. we met abdul [ non-english language ] who runs a school in the town as he crossed the border into turkey. [ non-english language ] >> reporter: this shelling and air strikes are random, he told us. homes are destroyed and children's bodies lie in shreds on the ground. if this cease-fire plan doesn't succeed, 300,000 civilians could be cut off there as they were in the town of media under a siege by the government. more than 40 people 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. but turkey already has more than 2 million syrian refugees and is reluctant to take more. holly williams, cbs news, on the turkey, syria border. >>> today pope francis arrived in cuba for a historic meeting with the le

scott that is an indication of how difficult it can be to negotiate with the syrian regime. >> holly williams on the turkey-syrian border for us tonight. holly, thank you. today, pope francis, visit itted one of mexico's poorest states. at a mass in chiapas on the border of guatemala, francis denounced the abuse of mexico's indigenous people. the area is the center of a migration crisis as central americans struggle to reach the u.s. manuel bojorquez takes us there. >> reporter: the men walking for days part of their desperate journey north. we have to keep going says this man, because the situation in el salvador is very dangerous. violence and poverty have forced >> to get north gives you hope of a better life. but it has become a dangerous gamble. 900 to 1,000 new arrivals. emily vickland runs the only migrant shelter in this corner of mexico. >> a lot of people get robbed, raped, kidnapped, abused in some kind of way. many of them say they were not aware of it being this bad. >> vickland says it is a result of mexico's crackdown on its southern border. a multimillion dollar program, parti

the five-year-old civil war created the chaos that led to isis, and holly williams is following this desperate fight. >> reporter: from beneath the rubble of a shattered building, a little boy waved his hand, telling rescue workers he's still alive. seconds later, they free him, bloodied but breathing. they also dig frantically for a child, it's too late. we can't independently verify these videos, but they appear to show the syrian regime's new offensive in aleppo province, which is backed by russian airstrikes. hassan haj ali is a rebel commander who told us his men have received weapons from the u.s. and are trying to fight off the assault. "when the regime kills women and children, "he told us "they're telling syrians to get out of rebel-held areas." as the regime and russia pom bard aleppo province, the battle field there has become even more chaotic. now there's evidence that groups supported by the u.s. have started to fight each other as they vie for territory. hassan haj ali, along with other u.s.-backed commanders, told us fighters and the kurdish group also receives americ

and, scott, one of those towns is madaya, where we've seen >> pelley: holly williams on tonight. hole, thank you. well, we saw a rare shortage of grace from pope francis last night in mexico. someone pulled him on top of a young person in a wheelchair. watch this. the pope shouts, "don't be selfish." tonight, francis is jumping in to the fight over immigration as he celebrates mass just across the rio grande from texas, and manuel bojorquez is there. >> reporter: it was his strongest stand yet in solidarity with migrants. this mass before 200,000 in juarez, calling it a humanitarian crisis. across the border in el paso, a crowd of 30,000 watched the mass, a symbolic event for two cities separated only by the rio grande. and connected here by a choir comprised of people from both sides. like americans flor and ana garcia from el paso. >> we feel part of both communities since we go back and forth so often. >> reporter: the mother and daughter have seen the ravages of violence in juarez, fueled by cartels and human smugglers, troubles pope francis is facing head on. >> showing that

tonight, thousands of syrian refugees are streaming out of aleppo in a march toward turkey, and holly williams is there. holly. >> reporter: scott, the syrian regime launched a new offensive around aleppo this week, backed it's thought that tens of thousands of people have fled the intense fighting, and up to 20,000 people are already massed on the turkish border, according to the u.n., though so far they haven't been allowed across. rebel groups have told us they didn't just lose territory but also control of the main supply turkey. that sparked fears that the regime could surround the entire city, laying siege to yawrs hel by the-- held by the rebels and trapping civilians. russia began launching airstrikes in syria in september, and it's helped government forces to capture several strategically key towns. but taking full control of aleppo, which was a city of more than 2 million people before this war began, would be a much bigger prize for the syrian regime and also for its russian backers. >> pelley: the assad dictatorship making significant gains on the battle field for the first time in