captioning sponsored by cbs >> barnett: rising tensions with russia. on orders from moscow, a u.s. consulate shuts-down. the russians are now demanding access to a spy's poisoned daughter. also tonight, president trump escalates his twitter attacks on amazon, and says a newspaper also owned by billionaire jeff bezos, needs to register as a lobbyist. new developments in the fatal police shootings of two black men. landmines in the holy land. we'll take you inside the mission to clear jesus' baptism site of booby traps. >> it's really dangerous >> barnett: and, a nine-ton space station is expected to come crashing down this weekend- - but where? >> reporter: the chances of a piece of this thing hitting somebody on earth are pretty haim.

>> but not zero! bhis is the "cbs weekend news." m >> barnett: good evening, i'm errol barnett. aye diplomatic crisis between russia and the west is worsening by the day. today, the flag over the u.s. rensulate in st. petersburg was lowered and the building closed. em was done on orders from the kremlin in retaliation for the expulsion of russian diplomats from the u.s. and other countries. tensions escalated quickly after the nerve agent poisoning in england of a former russian spy and his daughter. charlie d'agata has the latest from moscow. >> reporter: it's no coincidence that president vladimir putin's aulitary chose this week to the test launch of its latest latest weapon. a well-timed show of force. a nuclear weapon dubbed "satan si" by nato, a ballistic missile ywsigned to strike targets anywhere in the world, cndetected. russia's biggest diplomatic target is already being dismantled: the u.s. consulate

in st. petersburg, america's largest facility besides the embassy in moscow. the russians have been swinging the axe on other countries too: senior envoys, summoned and ordered to send diplomats home, adding to the expulsion of 60 american diplomats earlier this week. and moscow upped the ante with britain, too, now ordering more than 50 diplomats out. british ambassador laurie bristow. >> it's important to bear in mind why this crisis has arisen in the first place, it's the use et a chemical weapon on the streets of the united kingdom that has threatened the lives of a number of people in my country. >> reporter: including yulia o'ripal, the daughter of double t ent sergei skripal, who's assassination attempt using a suspected russian nerve agent triggered the worst diplomatic crisis since the cold war. as her condition has rapidly improved, the british government says they'll now consider a request for the russians to see

her. whether she wants to see them is another matter. in yet a further escalation: russians are demanding to know ory british authorities searched a russian passenger plane in mendon, something they've called "blalatant provocation," and threatening to searching british planes landing here. errol? >> charlie d'agata in moscow. thank you. president trouble is spending loe holiday weekend in florida president trump is spending the holiday weekend in florida. as he headed off to play golf today, the president again teed off against amazon-- on twitter. msijia jiang is in west palm beach. or reporter: president trump claims "the u.s. postal service will lose $1.50 on average for each package it delivers" for amazon. he went on to call out the "fake washington post" as part of retail giant's amazon's lobbying staff, adding "amazon must pay costs and taxes now." jeff bezos is the founder and c.e.o. of amazon, and he owns

the "washington post." nie president has a history of criticizing both companies. ro the campaign trail he made this promise about amazon: >> believe me, if i become president, oh, do they have problems. they're going to have such problems. >> reporter: the white house says it has no plans to take action against amazon, which does pay local and state taxes. however, it avoids federal taxes by using tax credits and breaks. as for whether amazon is cashing in per package? >> they're paying what they're charged by u.s. postal service, probably driving a hard bargain to negotiate a good deal but that's a two way street, al reporter: a citigroup analysis found the post office is losing money to ship sickages. al a result of pension and health care expenses-- not the costs linked to delivery. in fact, package delivery is one of the few areas of the postal service business that is growing. errol? >> barnett: all right, weijia jiang.

joining us in west palm beach florida, thank you. we pentagon the pentagon today the pentagon today identified the american soldier who was killed in syria yesterday by a roadside bomb. master sergeant jonathan dunbar of austin, texas died along with a british soldier. five other troops were wounded. today thousands turned out for the funeral of a new york city firefighter and air national guardsman. christopher raguso was among seven service members killed in a military helicopter crash earlier this month in iraq. fox news host laura ingraham announced last night that she's taking a planned vacation from her program next week. her break comes after about a dozen advertisers cut ties with her show after she mocked stoneman douglas student- activist david hogg on twitter. ingraham later apologized. and there are growing protests in sacramento, california over the fatal police shooting of stephon clark. an autopsy commissioned by clark's family and released yesterday shows officers shot him times in the back.

today, protesters returned to the streets. here's danielle nottingham. >> reporter: former n.b.a. star matt barnes led a rally in downtown sacramento in support of stephon clark. >> they continue to kill us and it could be any of us. he reporter: the night before demonstrators stood face to face with police in sacramento during the fourth straight night of protests following the release of an independent autopsy. stephon clark's family hired high-profile pathologist bennet omalu to perform the autopsy. in results released friday, omalu said the 22 year old was shot eight times. >> so you can reasonably conclude he received seven gunshot wounds from his back. ed reporter: sacramento police say clark advanced towards them heen they fired at least 20 shots, and they believed clark was pointing a firearm. clark was later found with only

macell phone. black lives matter leader tanya faison says the protests will continue until there's change in the city. >> we are very angry. we're very sad. we're very traumatized. i'm traumatized. >> reporter: in a statement, the sacramento police department says it is waiting for the results of the county coroner's report before making further comment. errol? >> barnett: danielle nottingham, ttanks. in baton rouge, louisiana, newly-released video of the fatal police shooting of alton sterling is re-opening old wounds. one officer was fired yesterday, g.other was suspended for the 2016 shooting. tony dokoupil has the video. and we caution-- it is graphic. >> put your hands on the car or i'm going to shoot you in your ( bleep ) head, you understand me? >> reporter: those are the words of baton rouge police officer shane salimoni, mere seconds olfore he fatally shot 37 year- old alton sterling. >> i'm saying what happened man? hold on. >> reporter: salimoni and officer howie lake had responded to a 911 call about a man making threats outside a convenience

store. sterling matched the description. >> get on the ground! >> reporter: the officers say sterling had a loaded gun and was reaching for it. ofe department's investigation tund officer lake, who deployed his taser, had handled the situation appropriately. salimoni-- who fired all six shots from his service glock-- had not. ri was terminated and stripped of his badge. baton rouge police chief murphy paul: >> unreasonable fear within an officer is dangerous. >> reporter: salamoni said he felt forced by sterling to open fire, according to a report from baton rouge police internal affairs. but the sterling family's legal team says the video shows how it was salamoni who set the tone: >> alton sterling was not some wild deranged cocaine filled t gh big black man that was out of control. the person who was out of control was blaine salamoni.

>> reporter: a lawyer for salimoni says he plans to appeal his client's firing. however, he did acknowledge it's unlikely is client will ever be a police officer again. >> barnett: keep that focus in policing america. tony, thank you very much. malala yousafzai made an emotional return to her hometown in pakistan today. n-- her first time back since 2012. that's when-- as a 14-year-old-- she was shot by the taliban for speaking out for women's education. the nobel peace prize laureate returns to britain on monday. as christians prepare to celebrate easter, and jews observe passover, there was more violence today in the holy land. zeong the gaza border, more than a dozen palestinians protesting the blockade of the territory were wounded as they faced off against israeli troops. at least 15 people were killed in clashes friday. also in the holy land, a dangerous mission is under way to remove landmines from the site where jesus was baptized. here's jonathan vigliotti.

>> reporter: every year hundreds of thousands of christians dip cto the jordan river for bapitism ceremonies. yards away ghostly churches, monasteries and chapels mark the site where christians believe jesus himself was baptised. for decades this stretch of land, holy to christians, muslims and jews, has been off limits-- until now. these men and women are making a different kind of pilgrimage. the israeli defense ministry's national mine action authority and a british charity are hunting for land mines. >> i think it's really dangerous. >> reporter: james cowan with halo trust says around 3,000 mines dot roughly 250 acres of holy land. anti-tank mines the size of a small pizza are buried, not all are visible to the naked eye. di the really insidious thing about landmines is that whilst the reasons for them being laid in the past may disappear, the landmines themselves remaining

just as lethal long into the future >> reporter: they are the deadly leftovers from the arab-israeli war, and decades of conflict rsat followed. >> for the last 60 years nearly, it's been impossible to reach the churches, so we've worked with the christian denominations, the israeli authorities and the palestinians to get permission to start work to clear all the explosive hazards from around the churches. e reporter: its an unlikely flam effort in a region still divided by conflict. the over $1-million project will clear mines using diggers and metal detectors. then clear the churches which are believed to be booby trapped. thnes will be detonated like peese gathered from other sites. the hope is people can step foot on this resurrected ground by next easter.

charlie vigliotti cbs news >> barnett: closer to home. someone in new jersey is a jackpot winner. last night's winning "mega- millions" ticket was sold in the town of riverdale. the winner will collect a prize estimated at $521-million-- before taxes. and tonight in san antonio, texas the final four face off in n.e men's n.c.a.a. basketball tournament. last night, on the women's side there was a major upset. watch this. >> for a trip to the national championship. ( cheers and applause ) >> barnett: incredible. the undefeated uconn huskies fell to north dame in the national semi final. eotre dame will face mississippi state in the championship game tnday. coming up next: reducing the itnger of military re-supply runs-- with drones. and later, what goes up must come down, including a 19-

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i'm back. aleve pm for a better am. >> barnett: a u.s. marine >> barnett: a u.s. marine reservist and transport officer says he saw too many of his fellow troops get killed or wounded delivering supplies in iraq and afghanistan. so he came up with an idea-- robotic re-supply runs. david martin shows us how the plan is taking flight. >> just like a worker bee, a bee, a drone comes out of its hive. its mission: to deliver supplies to marines in the field. is this amazon meets the marine corps? >> i think amazon has got a similar idea to us yes. >> reporter: major chris thobaben is testing a concept he hopes will revolutionize the supply chain for marines on the move, freeing them from the road convoys that were such exposed targets in iraq and afghanistan. >> we're trying to bypass that with a lower cost and a higher payload.

>> reporter: right now the marines are testing small commercial drones carrying light loads like this canteen. but if the concept works, the drones will get larger and the s ads will get heavier. thorbaben calls for resupply on his tablet. in this test the canteens are loaded by humans, but the drones are autonomous and will eventually return to the hive to reload themselves and fly again. >> you scale this up to a larger platform and now one delivery is aking care of an entire fire team. 50 deliveries is taking care of first and second platoon. 150 deliveries is taking care of your entire company. >> reporter: not just marines in combat, but humanitarian operations. when hurricane maria devastated puerto rico it took weeks to get relief supplies from the port out to the people who needed them. thobaben says autonomous drones could eliminate that bottleneck. >> you get it to us in two or three days and then we can get uplenland 50 to 100 miles in the very next couple of minutes. >> reporter: armies will still travel on their stomach, but the drones which feed it will travel on their own.

david martin, cbs news quantico, : rginia. >> barnett: all right, still ahead: she was held captive by a violent sex trafficker. her harrowing story is next. ♪ tired of constantly battling lingering smells in your home, like pet, shoe, and body odors? for long-lasting, continuous freshness, try febreze plug. febreze plug provides 45 days of freshness, with a unique dual chamber design that alternates between harmonized scents for a continuous renewal of fragrance. plus, febreze plug is formulated with odorclear technology, which cleans away odors instead of just masking them. for freshness you'll notice week after week, try febreze plug. [sfx: mouse click]

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>> i was searching for something, but i didn't know what i was searching for. >> reporter: alyssa beck grew up a good student in a middle class neighborhood, but in her early teens she started breaking her parents rules by staying out late and hanging out with boys. >> part of it was being a rebellious teenager and honestly being a child but also my father and mother, they had problems of their own. >> reporter: after running away from home for almost a year, alyssa attended up in the juvenile justice system. >> if you have a child who needs counseling and who needs help because they've been through serious trauma they're going to probably find worse friends. >> sure enough alyssa met a 17 met a 17 year old who encouraged her to flee the facility. she ended up in jacksonville sin city, a dangerous crime-ridden area with a lot of motels and a lot of men. men who pretended to care about her. >> i thought these guys were my boyfriends. they gave me food, they gave me the clothes that i needed.

>> but things quickly changed changed when alyssa was introduced to ian sean gordon. >> i remember him just really brutally beating me and raping me. and then he started to take pictures of me and i heard him starting to call people and tell them, "hey, i have this girl here you can come do whatever you want to her just for $20." >> reporter: how many men? >> 50 over the course of two weeks. >> reporter: alyssa would be in and out of the track traffickers years. >> alyssa had such a vivid recollection and a detailed memory what had happened. she gave us the map, so to speak, to go create cases against these people. >> reporter: alyssa's work with the jacksonville human- trafficking taskforce led to the arrest of seven people who were involved in buying or traffic her. ian sean gordon received one of the first life sentences ever given to a sex trafficker. >> these victims find safety in someone, anyone, anywhere that

will show what they think is love. >> reporter: actor and activist ashton kutcher has taken on this issue where it'spe. on-line. in 2009, he and demi moore created the non-profit company born. >> we build technology to help fight sexual exploitation of children. we basically take a victim and connect... connect them with someone who can help. >> barnett: you can see michelle miller's full report lived to tell traffic tonight on 48 hours. all right, head's up. a chinese space station is expected to crash to earth this weekend. everything you need to know is next. do what you love with moderate to severe rheumatoid arthritis? do what i did. ask your doctor about humira. it's proven to help relieve pain and protect joints

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and back pain made it hard to sleep and get up on time. then i found aleve pm. the only one to combine a safe sleep aid... ...plus the 12 hour pain relieving strength of aleve. i'm back. aleve pm for a better am. >> barnett: hundreds gathered today in cambridge, england, for the funeral of stephen hawking. 7e famed british scientist died this month at the age of 76. actor eddie redmayne, who portrayed hawking in the film, "the theory of everything," delivered a bible reading at the service. eawking was known for his bloundbreaking research into black holes. now we end tonight looking up. a chinese space station about the size of a bus is expected to come crashing through earth's atmosphere sometime this weekend. ste latest predictions say parts of it could land in the pacific. here's chip reid. >> reporter: imagine this: a chinese space station is spinning out of control and

hurtling toward earth. most of it will burn up in the atmosphere, but what's left will come crashing down sometime in ere next week, striking somewhere between 43 degrees north and 43 degrees south-- which includes most of the united states. if you find that frightening, space expert john logsdon of woorge washington university has a word of advice: relax. es the chances of a piece of ngis thing hitting somebody on earth are pretty slim. >> very slim-- but not zero! >> reporter: okay, not zero, but the chances are "about one million times smaller than the odds of winning the powerball jackpot." so really, relax. china launched the tiangong space station in 2011. tiangong means heavenly palace, but it's really just one of more than half a million pieces of space junk orbiting the earth. it sounds like kind of a flying r.v. >> about that. liu know, like a winnebago in space. >> reporter: and as we all learned as children, what goes

up must come down. >> it gradually slows down over time and slows down and slows down until eventually its not going fast enough to stay in orbit. >> reporter: if the tiangong prace station sounds familiar, you probably saw "gravity" with sandra bullock. >> i'm about to undock from tiangong. >> reporter: exactly when the ital tiangong will hit the earth is still up in the air. >> at this point we know within plus or minus two days of april the first it's likely to reenter. >> reporter: april fools? >> april fools. >> reporter: april fool's day. space junk with a sense of humor. chip reid, cbs news, washington. >> barnett: chip is right. relax, folks. that is the cbs that's the "cbs weekend news" for this saturday. i'm errol barnett in new york. we leave you now with the blooming cherry blossoms in the nation's capital. have a great night. captioning sponsored by cbs captioned by media access group at wgbh access.wgbh.org

route on bart to san jose. why newed at 6:00 an agreement has been reached for a new underground route on bart to san jose. why the situation is being called a win for tens of thousands of people. but first. >> this is a situation different more than color. it comes down to wrong and right. >> now at 6:00 a former nba player leads another heated protest in sacramento over the deadly police shooting of stephon clark. the warriors are getting ready to play there in just a little while. good evening. >> the warriors tip off against the kings in an hour but you can see in this video just into the newsroom that there is already a large police presence at the golden one center. officers are expecting heated protest at the arena later this evening. the day started out with ail