reached a mini truce with the rebels to allow food and supplies to reach civilians. >> pelley: elizabeth palmer with rare firsthand reporting inside syria tonight. elizabeth, thank you. today, the director of the f.b.i. said that his battle with apple is the toughest fight he's faced in government. a federal magistrate ordered apple to unlock the iphone of one of the san bernardino terrorists, but today, apple told the court that order is dangerous. jeff pegues has more. >> reporter: in its filing, apple says the f.b.i. is seek a dangerous power and that it would be forced to dedicate six to 10 apple engineers to create government operating system or government o.s. apple said there would even have to be a government forensic lab on company ground that could be used to open hundreds of other seized diswies dwooises in law law enforcement's possession. apple says: the company believes the case triggers first amendment protections, and writing computer code is equivalent to free speech. >> this is the hardest question i have seen in government. >> reporter: f.b.i. director james comey reassured m

reached a mini truce with the rebels to allow food and supplies to reach civilians. >> pelley: elizabeth palmer with rare firsthand reporting inside elizabeth, thank you. there is breaking news tonight about a shooting at a factory in hesston, kansas. that's north of wichita. we'll go now for the latest details. >> reporter: i'm kristine johnson. local police officials confirm at least four people have been killed and as many as 20 injured in a work-related shooting at excel industries in hesston, kansas. that area is located north of wichita. the shooter, who was identified as cedric ford by eyewitnesses and also our local affiliate, was pronounced dead. the suspect was an employee at excel industries, but it is unclear if he was a current or former employee. now, at the request of local authorities, the f.b.i. is en route to provide assistance in this investigation. no other information has been released, including the names of the victims. we do know that governor sam this, "please send your thoughts and prayers to the people of hesston tonight." tune in to your local stations for more infor

elizabeth palmer in damascus for us to us night. liz, thank you.

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. republican presidential candidates are holding their final debate before super 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. 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 has been leading in ohio. but ano

the civil war has left many of syria's cities in ruin, and elizabeth palmer got rare access to homes. a city that once had as many residents as philadelphia but now just a fraction. >> reporter: after four years and megatons of explosives, the syrian army finally took back the city of homms from rebel fighters. but several rebels escaped into the suburb of al waar, where they tried the make a last stand. in the end, though, the violence was too much. under siege and outgunned, the talk. they're just out of sight at the end of that road. the syrian army wouldn't allow us in, but they do allow the women out to get medical care and to shop for food. what's changed? "now there are formal negotiations going on with the government," they tell me. "life has improved. the siege has ended and our electricity and water are back." supplies are flowing in, too, though every single box is checked by the military. and every canister of gasoline is probed for hidden weapons. but now what? in december six bus loads of rebels and their families struck a deal for safe passage out of al waar to an oppos

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 warar, 30,000 people lived here. now, no one is left. opposition fighters, a whole collection of groups working together, were so entrenched 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 syriri army grorod offensive, forced the rebels to retreat. 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 can't even describe it," he says. "rebels had the advantage because they knew the terrain." >> reporter: you must be tired, though? "oh, yes, yes he says "we are so tired." victory has brought a lull for these men and some time to regroup, but what if their lull was replaced by a genuine truce? put your ha

jim. >> axelrod: elizabeth palmer, thank you. this week, a study confirmed the methane gas leak in porter ranch, california, was the largest in u.s. history. more than 100,000 tons of methane leaked before it was capped. the people who live there have been told it is safe to return home, but as carter evans reports, many are still skeptical. >> you guys can play for a minute while i unpack a couple things. >> reporter: sandy crawford has been trying to make this hotel room feel like home for more than a month. >> are you going to play with me or not? >> reporter: her family, like so many others, was elated when officials last week declared the crisis over. >> the leak in the aliso canyon storage field is permanently sealed. >> reporter: when you drove back into the neighborhood, could you smell the gas? >> no, couldn't smell it. i was hopeful. i thought we were good. >> reporter: but within hours of returning home, crawford says her youngest son had trouble breathing again, and worse. just blood down his face. i put it on our fac

elizabeth palmer, cbs news, homs. >> glor: in iraq today dozens were killed in about a hundred hurt in two bomb attacks. the first went off at an outdoor minutes later the same location, a suicide bomber blew himself up. a group a fill writted with iceician claimed spobilityd-- claimed responsibility. a series of gas explosions in a russian coal mine have killed at least three dozen. it happened in northern russian above the arctic circle. 81 minors were rescued after the original blases. but those still trapped are presumed dead. >> coming up we follow the new e-mail trail in the flint water crisis. and a storm battered cruiseship the cbs evening news continues. the n her feet. and give her the strength and energy to stay healthy. who's with me?! the complete balanced nutrition of great tasting ensure. with 9 grams of protein and 26 vitamins and minerals. ensure. take life in! ugh! heartburn! no one burns on my watch! try alka-seltzer heartburn reliefchews. they work fast and don't taste chalky. mmm...amazing. i have heartburn. reliefchews. enjoy the relief. my son and i used to watch

also tonight, elizabeth palmer takes us inside syria at a >> 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

syria remains relatively calm but as elizabeth palmer reports from homs, the quiet has brought little comfort. >> reporter: threeries ago the old city of homs was the fiercest front line in syria. then it fell to the government and the war and the rebel fighters moved on leaving a wasteland and hundreds of thousands of homeless people. in some parts residents are trickling back, reestablishing the essentials of life, commerce, even school. this is day two of the partial ceasefire and people are holding their breathe hoping it will hold. right on the edge of town we can hear the sounds of fighting, though. but with no moniters anywhere, it's impossible to say who is attacking who. the numerous reports of violations today underline what a fragile thing the partial truce is. but 48 hours in, everybody agrees things are much quieter than they've been in years. so the kind of lasting peace like this still feels a very long way off. elizabeth palmer, cbs news, homs. >> g gr: in iraq today dozens were killed in about a hundred hurt in two bomb attacks. the first went off at an outdoor market

elizabeth palmer in damascus for us tonight. liz, thank you. sexual transmission of zika knew. and apple warns what might happen if it's forced to unlock a terrorist's iphone when the cbs evening news continues. s. then your eyes may see it differently. only flonase is approved toprelieve both itchy, pand no other nasal allergy spray can when we breathe in allergens our bodies react by inflammatory substances that cause our symptoms. most allergy pills only control one substance. flonase controls six. and six is greater than one. complete allergy relief or incomplete. let your eyes decide. flonase. 6>1 changes everything. your path to retirement may not always be clear. we can help guide your retirement savings. so wherever your retirement journey takes you, we can help you reach your goals. call us or your advisor invest with confidence. seems like we've hit a road block. that reminds me... anyone have occasional constipation, diarrhea... ...gas, bloating? yes! one phillips' colon health probiotic cap each day helps defend against occasional digestive issues. with three types