>> this is "bbc world news america." >> funding of this presentation is made possible by the freeman foundation, kovler foundation, pursuin solutions for america's neglected needs, and purepoint financial. >> how do we shape our tomorrowt it stawith a vision. we see its ideal form in our mind, and then we begin to chisel. y strip away everything that stands in the wato reveal new possibilities. at purepoint financial, we have designed our modern apch to banking around you -- your plans, your goals, your dreams.

your tomorrow is now. purepoint nancial. >> and now, "bbc world news." jane: this is "bbc world news america." reporting from washington, i'm jane o'brien.re thpeople are killed and 16 injured during a series of attacks in france. president emmanuel macron calls it an act of islamist terrorism. h.r. mcmaster is out, johnin bolton is national security adviser. what will the shakeup mean for the prident's policies? and turning computer code into physical dna. rpscientists discover a susing a.w way to store digital d

jane: welcome to ouriciewers on puelevision in america and around the globe. a gunil mand three people and wounded more in southernda 16 france the gunman was identified as redouane lakdim allegiance to the islamic state group and was known to , authorities. he is believed to have carried out three separate attacks, taking hostages at a supermarket. simon jones reports. simon: terror returns to fre ce. this timshooting spree in the south of the country. the main target, supermarket. securi forces rounding the -- surrounded the builnmng where the killed two people. then he took at least one hostage. a senior officer offered himself to the attacker in exchange. >> the lieutenant conel who

was with those men and swvoluntarilped himself for a hostage, who the terrorist let go. the officer stayed with him, ant th terrorist opened fire, so our forces intervened and brought down the terrorist. simon: the heroic officer is in a critical condition. >> he saved lives and brought honor to his servicehe nation. lhe is now fighting for he, and all of our thoughts are with him and his family. simon: one security guard at the supermarket who did not want his wn said he was shot at twice. >> i saw his beard, the guns. od whatiately unders was going on. we are used to seeing this on tv now. in a way it is no longer surprising. simon: the entire attack staed in the historic town of

carcassonne around 15 minutes away. the killer hijacked a car using extreme violence. a passenger was kill i, the drivured. soon afterwards, he shot and wounded a policeman who was joggingith colleagues. ran into the supermarket, shooting, taking hostages, and shouting "i am a soldier of daesh," or islamic state. that is where he was eventually shot dead. the kill was named as ear-old redouane lakdim. authorities say he was known for petty crimes. 2017, he wasd being nitored by intelligence services. however, this monitoring operation did not justify or show any intention of the individual to carry out terrorist attack. simon: tonight, a police neeration in the area he lived in carcassons they try to

understand more about his attack. simon jones, bbc news. jane: four for more on this attacks, i spoke a short time ago to a fellow from the foundation for the defense of democracies. they knew about him. this often happet . how diffic it for the authorities to take the next step and stop people like this from doing something? >> this is part of a trend we are seeing around the world that there are so many people who are res.rnees or possible return how do you allocate resources to track all of these people, to make sure they are not on the path to radicalization or a out -- path to carrying out a terrorist attack? in europe the entire system is groaning under the weight of the isis problem as people have left d isis hasng fields lost territory. it is hard for me to imagi what the french authorities are going through right now as they try to reassess what their prrities are. if they didn't see this man is a priority, who is?ja

: is this the new normal? s jonathan: i think ite new normal. riat we are lookingt is the end of the territoal phase of isis. he will see morreturnees elming back to france or bum or the united states or canada. people inspired by the isis ideology. this has been happening concurrent to the shrinking of the isis territory. this is likely to be the way isis carri out attacks primarily for the foreseeable future. jane: but if they are losing on the battlefield, why do they still have this appeal and credibility? >> it is the ideology itaslf. itot gone away. we have been battling this since 2001.if ot long before that. we used to call it al qaeda. now we call it isis.

it will almost certainly turn e into somethie. it is jihadism, and the appeal there, ideology is still and we have yet to gure out a way to defeat it. it is a genetional challenge at i don't think we will solve in the foreseeable future. jane: a lot of focus has been on social media as a tool f propaganda, for recruitmenn steps have bken. do you think the companies can do more? nathan: i think they always can, but it is a game of whack-a-mole. you take an account down, it is -- doesn't take much to put a new one up andth sprea word that there is a new address, new facebook account to follow. it is a constant gardening exercised by the social media companies, but we will never get rid of it. i should note that incidentally, law eorcement, intelligence services like to be able to see what these people are posting because it provides an open

source, a window into some of these groups. perhaps you want them to be able to continue to operate. the downside is you have individuals get caught up in the radicalization process. jane: thk you very much indeed for joining me. now, there has been another high-level shakeup at the white house. r.tional security adviser mcmaster is being replaced by john bolton. the former u.s. ambassador to the u.n., mr. bolton has frequently made the case for preventive strikes on north korea and iran. his appointment would make him the third national security adviser in 14 months. chris buckler ports. chri at what appears to be a constantly changing white house, president trump's latest appointment could mark the dawning of a new era in american foreign policy. with the customary tweet, donald trump announced that effective xt month, ambassador joh bolton will be the new national security adviser, replacing h.r.

mcmaster, with whom the president had clashed for months. bolton is a hawkish hardliner who served in the bush presidency. he has called for the iran nuclear deal to be scrapped, supported military action against north korea, and brings a clearly inrventionist voice into the trump inner circle. he has long been a right-wing commentator for fox news, and chose the network to give hisgh first th about his new job. john bolton: i've never been shy about what my views are, but frankly, what i have said in private now is behind me, at least effective april 9. the important thing is what the president says a what advice i give him. chris: there have been a lot of people leaving the doors of this white house. h.r. mcmaster's departure had long been predicted. although only a week ago president trump's team was playing down such talk. sah sanders: he spoke to a number of staff this morning, reassuring them that thereere

personnel changes -- noe immediatrsonnel changes at this time, and that people shouldn't be concerned. chris: but there is a changing of the guard, and with mikecr pompeo as ary of state andat john bolton asnal security adviser, donald trump is surrounding himself with tougher-talking foreign policy advisers. that may concern some who feel that the predecessors were a lderating influence, and this comes amid difficult diplomatic questions for america about russia, iran, and a planned summit between president trump and the north korean leader, kim jong-un. chris buckler, bbc news, washington. jane: four more about these changes, i spoke a brief time ago with james jeffrey, whose ed as president george w. bush's deputy national security adviser from 2007 to 2008. j you knn bolton. what do you think makes him l,tractive to president trump?

james: first of e's experienced, secondly, he is outspoken, and they appeared to have good personal chemistry. those are important characterionics. the quess what kind of advice will he be giving the president? jane: what do you think he will be telling the president? james: we have his record, which is pretty hard-line on different things. he has been an advocate on regime change in the past. he is not in the chain of command -- he is notoing to unleash armies on north korea or iran. the problem is if you focus on regime change as your answer to a global or international security problem, you miss somet hard but necessaryge work tthe real solution, because it is like a magic potion, the gold at the end of the rainbow, that in our experience is never there. he is not insay, the chain of command, so how much influence will he have on james: in two areas, and the first may be hard for him,

because like him or not, he has very song and well-developed opinions. as national security adviser, au have to be the coach o team of other security players such as pompeo, nikki haley, general ttis at the pentagon. that is a very important role he is going to ha to frankly learn. the second is that there are times -- that has been my experience in the acting role -- the president will only be close advisor. that advisor is going to be john bolton. jane: he is surrounding himself by hawkish people. do you expect dramatic change in u.s. foreign policy? james: i'm not so sure that these people are hawkish in the sense that they want to go to war. i they are hawkish in the sense that they recognize we arr facing adifferent situation than we did from 1989 to 2013, 2014. there are competitors who, in the case of putin, the case of the chinese, certainly in the case of north korea and iran,

believe they are at war with us. how do we deal with that? jane: that is a good point, isn't it, because as this administration evolves, countries like iran and north korea are going to be looking it. what might their reaction be? james: they will focus on what donald trump does, not what he a of his advisers say. the decision to reach out to o talke leader of north korea will be seen as a bold and not necessarily hawkish decision. pulling out of the iran nuclear deal, on the other hand, is going to be seen as a step away from a compromise approach to a very serious internation problem. jane: james jeffrey, thanks very much for joining me. jane: let's have a quick look at the day's other news. president trump has signed a huge government funding bill into law just hours before the third government shutdown of the are was due to start. he said he approved the bill to protect military and

national security, even though it contained items heays were not justified. in the u.k., a team of enforcement officers have entered the offices of cytbridge ana after a judge issued a search warrant. the company denies gathering data from facebook on millions of people without their consen order to influence the 2016 presidential election. the president of peru has been replaced. he was forced to resign amidti alles of corruption, which he denies. his successor is the former vice president, an engineer with little political experie nigeria's president has met 1 girls and on boy released on wednesday byhe islamist group of boko haram. most of the girls were taken from the school in dapchi last month. he told the children to pursue their dreams without fear of violence. boko haram said it would kidnap the girls again if they ever went back to school.

a convoy of vehicles left of the british embassy in moscowhis morning as 23 diplomats were expelled by the kremlin. flows britain's decision to expel the same number of russian u.komats from the the tit-for-tat was sparked by a nerve agent attack on a former russian spy and his daughter t on british soil earlier this month. the kremlin has denied involvement. steve rosenberg reports from moscow. steve: topplause from colleagues and friends, the british diplomats headed home, a sendoff far warmer than moscow's spring. moscow had expelled 23 from the embassy here. it was tit-for-tat. britain had ordered out 23 russians. for those left bind, it was an emotional moment. they could feel the chill in u.k.-rusan relations. but now euroan governments are moving closer to expelling russians. is moscow feelinthe pressure? there is little sign of it. >> we are absolutelygainst any

pressure from abroad. we are ready for discussions, but we cannot accept any pressure against my country. we proved00 that withyears of our history. steve: today president putin told russians he made historywi his landslide election win.ti no m of diplomatic tensions over the salisbury attack.kr one thing the lin has been cerking hard to do in recent years, with some s, is to drive a wedge between different countries in the european union, to sow discord. that is why a strong, coordinated response by eu stes to the salisbury atta would come as a surprise to moscow. this evening, russia took on brazil in a pre-world cup friendly. tension with the west risks overadowing the tournament russia will be hosting. >> sports and politics should be

separate. the world cup should bring people together. >> they always blame russia for everything. it is rubbish. >> it wouldn't bother me one bit if england didn't come. they can do what they want. -- believe what they want. it is their problem. steve: england fans will be safe here, says moscow.sa busbury has set the scenepo for a tical showdown, russia against europe. steve rosenberg, bbc news, moscow. jane: you are watching "bbc world news america." still to come on tonight's program, students from around the country are descending on washington. we will have the la't on tomorrows march for our lives. on a visit to northern ireland, british royal prince harry his fiancée, meghan markle, have been shown a peace building iainve. the couple enjoyed a pub lunch

in one o belfast's most famous and historic hostelry's and took time out to be greeted by well-wishers from the public. as sara campbell reports, it is one of a string ofeangagement ahof their wedding on the 19th of may. sarah: the audience couldn't quite believe who was walking m. prince harry andhan markle surprised thousands of on the side of the former prison from all there to promote peace between the communities, part of an initiative launched by harry on a visit your last september. and then to lunch in o of belfast's best-known pubs. stew washed irish down with a little liquid refreshment. had a half guinness and the mountain gd ale to sample with the lunch.

fed and watered, the couple brought their familiar hands-on approach to the walkabout. these visits have been partly about introducing ms. markle to the people, but also giving her a greater understanding of the u chosen to call home. london, they depart in a broadcast on a community radio station. in edinburgh, a close encounphr with the sds pony. rain today in belfast, the final u.k. capital city left for meghan to visit in her continuing journey from california girlo the wife of her british prince. sarah campbell, bbc news, belfast. jane: it has been more than a month since the deadly shooting

at a high school in parkland, florida, that claimed 17 monthss -- l today, students from that school descended on capitol hill tote demand strgun control. it comes ahead of a massive protest they hav organized tomorrow called march for our lives. in a developnt they may not ve been expecting, attorney general jeff sessions is proposing a bill that win effectively mp stocks, the devices that allow semiautomatic weapons to fire like a machine gun. the bbc's paul blake was with some of the students turned activists and he joined me a while ago. a big day for them today, big day tomorrow. what is their mood like? paul: it is like a big school trip. having breakfast with a lot of them, i quickly realized m them had never been to washington before. on the bus to capitol hill today, they were not just taken aback by the gravity of thesi ation, but by the monuments and the architecture and theur gran of washington, d.c., and even walking up to capitol hill, where they were going to

reet with former vice president joe biden, some icking up the snow because being from florida, many of them had never seen snow before. th some ways it was like a school trip and he public -- the hook being part of this lunprecedented gun contro campaign. jane: do they think people are taking them seriously? paul: they see people like joe biden, several senators meeting with them. theynow they have achieved some level of minor celebrity status. the key difference is that in other shootings and tragedies, communities involved don't want to let that define or label them, whereas the kidsere are a that label, owning that definition, because they want to use it to affect change so in the long run they will be defined by change that they hopb ng about. jane: what about their commitment to this? people have said that they are, kiey will get bored, they are going to lose interest. are they confident that they ca sustain mentum and vote? paul: this is the snapchat generation and they areni certainly orng a lot of this on social media.

onof the interesting thing is, after previous tragedies, the interest in gun control on google tapers out. after this one it has continued. it is not just that on the internet, it is the grassroots ents like the one this weekend. one of thehings that struck me talking to the kids on the bus today and at capitol hill, whether they are voting age or their friends are about to reach voting age, they are saying get ce innd vote your consci the midterm these experiences jane: paul blake, you will be there tomorrow bringing us the latest updates. thank you very much for joining. in an age of selfies, mobile videos, and endless websites, people are generating data at an alarming rate. but where do you store it all?sc a britisntist may have come up with a solution to the problem -- using dna as the hard drive for computer code. richard wescott reports.

richard: we are producing data at a staggering rate. all those videos, social-media posts, online forums, and "look where am" selfies. the problem is, it takes a huge ndamount of computer space energy to store it all. cod the answer lie somewhere else, deep inside us all? i couldn't resist making a video of this beautiful replica of the famous watson-crick double of dna that model changed the world. what if we could store the video i am makinge now onto a pi dna? >> take the movie file you sent me and tu convert that into -- richard: this cambridge mathematician has devised a way of turning computer codes into dna code. it means you can use the dna as a kind of hard drive. >> in a light bulb mont we realized that the dna was a wa

of storing information. richard: an american company turned the code into physical dna. it is a secret proldss, and they s why it is so effective. f>> tst benefit of dna is it is extremely dense, and if we stored all the data on the internet in dna, it is the size of a shoebox. the second benefit of dna is it is permanent. you could store it forever, which is very different from media which ages rapidly. richard: back at the institute, they are world leaders in reading dna. something has just arred for us in the post. >> this is what has come back from america, your report stored on dna.

richard: where is it? the big question is does it work? you read y video. >> we put the file back together again, and it is this file, and it looks like this. t richard: thaoks -- doesn't look like there are any errors in it at all. >> we checked. perfect copy of the file, every single 0. every single 1, correctly reproduced. richard: big companies including itcrosoft are looking at dna storage. s still too expensive and too slow, but that could soon change. >> in five years it will be advanced enough that you get a lot of money and very valuable inrmation, you might think about going this way, and maybe 10 to 15 yrs before there is a product you and i would buy. richard: richard wescott, bbc news, talking to you from a piece of dna and i have to say, that is one of theosfascinating stories all week. i'm still trying to grasp it.

you can find all the day's news on our website, and you can find full coverage of the march for our lives rally taking place tomorrow in washington and across the u.s. i am jane o'brien. thanks for watching. have a good weeken >> with the bbc news app, our vertical vid s are designed to work around your lifestyle, so you can swipe your way to the o nethe day and stay up-to-date with the latest headlines you can trust. download now from selected app stores. >> funding of this presentationb is made possib the freeman foundation, kovler foundation, pg solutions for america's neglected needs, and purepoint financial. >> how do we shape our tomorrow? it starts th a vision. we see its ideal form in our mind, and then we begin to chisel. we strip away everything that stands in the way to real new possibilities. at purepoint financial, we have

designed our modern apprg ch to bankinound you. your plans, your goals, your dreams. your tomorrow is now. purepoint financial. >> "bbc world news" wases ted by kcet los angeles.

captioning spowsored by ur productions, llc >> woodruff: good evening. i'm judy woodruff. on the newshour tonight: >> i will never sign a bill like this again. i'm not going to do it. >> woodruff: after threatening a veto, president trump signs a $1.3 trillion spending bill that sets a record for funding the military. then, mr. trump picks john bolton to be national security advisor, a veteran diplomat and conservative hawk who has called for military action against north korea and iran. mark shields and david brooksre are heo assess the latest turnover at the white house. plus, we escape to the waters off bermuda to see how technology is opening up ave treasure tf shipwrecks. ts how is it decaying? what other artifac are there?