the two groups are now battling for the same territory in northern syria. meanwhile, a car bomb in the turkish capital, ankara, on wednesday has brought tensions between the u.s. and its close ally turkey to a breaking point. the attack on a military convoy killed 28 people and turkey's blaming a kurdish group. the same group that america's backing in syria in the fight against isis. today, the turkish president recep tayyip erdogan, demanded that america declare the kurdish group a terrorist organization. the kurdish group denies any involvement in the bomb, but could have big ramifications for the fight against isis because, scott, the u.s.-led coalition uses a turkish airbase to launch strikes against isis in syria. >> pelley: holly williams, thanks. the show of respect was unanimous today for supreme court associate justice antonin scalia. hour after hour, mourners filed past his casket in the great hall of the court. prayers were led by his own son, a catholic priest. here's our chief legal correspondent jan crawford. >> reporter: justice scalia arrive

millions have fled syria, but there are tens of thousands who can't get out. they're trapped between russian bombers and a closed turkish border. holly williams is following this. >> reporter: imagine the terror, never knowing where and when the warplanes will hit next. we can't independently verify these videos, but they appear to show the aftermath of air strikes on the town of tel rifaat this week. in the syrian regime's new offensive, which is backed by russian air power, civilians are once again paying with their blood. crossing the border into turkey, we met abdul karim bahloul, who runs a school in tel rifaat. are random," he told us. "homes are destroyed and children's bodies lie in shreds on the ground." he told us he came to ask the turkish authorities to give refuge to children from the town, but after absorbing more than two milliont more in.eges.fe0lians could be cut off as they were in the town of madaya during a siege by the regime. more than 40 starved to death. dalia al-awqati told us that her charity, mercy corp, feed and clothe 500,000 peopl

but the wider war in syria is not going mr. obama's way. the forces of the assad dictatorship are advancing for the first time in years because of russian air support and iranian troops. it is rare fair reporter to get into syria, but our elizabeth palmer covered the dictator's advance today through an apocalyptic land. >> reporter: this used to be a neighborhood. now it's a battlefield. where the syrian army says it's got the enemy on the run. there's just been an air strike behind me. we're about five miles from the center of damascus, and the syrian army is trying to clear this suburb of opposition fighters. there is certainly no cease-fire here at the moment and there's not going to be at any time soon. solmer, one of the syrian soldiers, takes take us to see the buildings half a mile away where he says the rebels are now hiding. overhead, we can hear the target. then... ( explosion ) what are they hitting, solmer? >> they're terrorists, he says. those are barrel bombs? barrel broms basically canisters filled with explosives rolled out

also tonight, elizabeth palmer takes us inside syria at a turning point in the civil war. >> reporter: there is certainly no cease-fire here at the moment, and there's not going to be any time soon. >> pelley: daylight reveals the destruction done by a night of violent storms. and will this idea take off? plans for a widebody aircraft for wide bodies. >> at the end of the day, it's all about making money. captioning sponsored by cbs this is the "cbs evening news" with scott pelley. >> pelley: tonight, the five republican presidential candidates are holding their tuesday, the 12 primaries and caucuses that could be the turning point. for some it is a fight for survival, but for dominant donald trump, he is expected to draw most of the fire tonight, and now his tax returns have become an issue. major garrett is in the debate city of houston. major? >> reporter: scott, republicans here all agree-- tonight could be one of the last chances to slow donald trump's momentum before key contests in his republican rivals' home state. a new poll here in texas shows ted cruz ahead, and john kasich

the tonight a partial cease-fire is supposed to take effect in syria. if it does, it would be the first in the five-year-old civil war there, but no one's holding out hope. we do know the guns will be quiet in one town south of damascus because there is no one left to kill. it's rare for western reporters to get into syria, but our elizabeth palmer traveled there today. >> reporter: the drive in to sheikh miskeen is none stop wreckage, and when you stop, there's silence. before the war, 30,000 people lived here. now, no one is left. opposition fighters, a whole collection of groups working here that the syrian army simply couldn't advance into the town. it was a stalemate that lasted a whole year, until they called in the russian bombers. wave after wave of air strikes, starting in december, followed by a syrian army ground offensive, forced the rebels to retreat. today, there are a few soldiers left guarding the ruins as the battle has moved on. the two friends who were killed... jafar oleyan is an infantry soldier. how fierce was thified fooiting? "i

we were struck by these new images images from syria. it once had as many people as philadelphia, and now there are only ghosts. it is hard to spot a single building that isn't shattered. now to the north of homs, with the help of continuous russian airstrikes, the assad dictatorship is advancing on the city of aleppo, the main rebel stronghold. it was once syria's largest city, and assad may have it surrounded in a matter of days. so tonight, thousands of syrian refugees are streaming out of aleppo in a march toward turkey, holly. >> reporter: scott, the syrian regime launched a new offensive around aleppo this week, backed by russian airstrikes. 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 also control of the main supply route linking aleppo with turkey. that sparked fears that the regime could surround the entire city, laying siege to ya

like his country, syria, hoping for peace but braced for a lotar more war. here in syria, scott, and so, technically, this partial cease- fire is in effect, but it's far too early to know where or even if it's going to take hold, and, of course, how long it will last. >> pelley: elizabeth palmer inside syria for us tonight. liz, thank you.t. more pregnant women in the u.s.n th have caught the zika virus. that story when the cbs eveningws news continues. filled with 10 grams of protein, plus 26 vitamins and minerals including calcium and vitamin d, to help you get the nutrition you need. try new boost compact nutritional drink today. you get a cold. you can't breathe through your nose. suddenly, you're a mouthbreather. a mouthbreather! how can anyone sleep like that? well, just put on a breathe right strip and pow! it instantly opens your nose up to 38% more than cold medicine alone. so you can breathe and sleep. shut your mouth and say goodnight mouthbreathers. breathe right more "sit" per roll. bounty is two times more absorbent. so one roll of bounty can l

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 brennan. 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 that strengthens both isis and assad and it leaves the u.s. with little leverage in a war president obama has resisted 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 no