a very warm welcome to bbc news, broadcasting to our viewers in north america and around the globe. my name's mike embley. our top stories: a warning from pyongyang. north korea tells the bbc it's ready for war if america launches an attack. translation: if the us is reckless enough to use military means it would mean, from that very day, an all—out war. donald trump telephones turkey's president to congratulate him on winning sunday's referendum despite criticism of the poll from international observers. facebook orders a review after video of a man being shot dead was posted online. police are still hunting the killer. and as the french presidential election enters its final stages we take a closer look at the far—left candidate who may yet cause a surprise. hello.

in a rare interview, a senior north korean official has told the bbc his country is prepared to launch a nuclear strike — "all—out war" — if the united states decides to attack it. he also said missile tests would continue, "weekly, monthly, yearly," despite international condemnation. president trump has suggested the leadership in pyongyang needs to "behave", and vice—president pence warned pyongyang not to test the us. the north korean vice foreign minister was speaking to our correspondentjohn sudworth in the north korean capital. john is being closely monitored there. north korea is all about shows of strength. the first today came in this tae kwon do demonstration. the next, in kim il—sung square, close to the centre of power, by way of a rare interview.

translation: if the us is reckless enough to use military means, it would mean, from that very day, an all—out war. our nuclear weapons protect us from that threat. we will be conducting more missile threats on a weekly, monthly and yearly basis. today, the us vice president, mike pence, was in south korea, visiting the demilitarised zone that separates the two halves of this divided peninsula. he, too, was talking tough. it was a period of strategic patience but the era of strategic patience is over. president trump has made it clear that the patience of the united states and our allies in this region has run out. but, despite the posturing on both sides, the risks are limited. for the us and its allies, war would be far too costly. and north korea's threats, although deeply alarming, are always conditional.

if you could send one message to donald trump today, what would it be? translation: i would tell him that if the us encroaches on our sovereignty, then it will provoke an immediate counter reaction. if the us is planning a military attack against us, we will react with a nuclear pre—emptive strike by our own style and methods. tonight, although all options apparently remain on the table, the us appears to be signalling that diplomacy and toughened sanctions there is strong evidence that beyond the gloom of this city lie vast political prisons, gulags in which all dissent,

however mild, is crushed. although, in his interview, the vice minister called that accusation a lie. militarised, isolated and repressive, north korea has the right to follow its own path and, he insisted, no—one will be able to stop it. john sudworth, bbc news, pyongyang. some more of the menus for you. —— main news. south korea's former president has now been officially charged with bribery, abuse of power and leaking state secrets. park geun—hye, who is in police custody, is accused of allowing her close friend to extort money from companies in return for political favours. she was removed from office last month. at least 30 people are still missing, and 29 confirmed dead in a landslide in sri lanka.

several tonnes of rotting rubbish collapsed onto a slum just outside the capital colombo. another 400 families have been moved by the authorities for their own safety. the russian federal security service, the fsb, says it has arrested a suspected organiser of the suicide bomb attack on the st petersburg metro earlier this month. the fsb named him as 27—year—old abror asimov. the agency said he trained the suicide bomber, akbarzhona jalilov, whose bomb killed 14 people and injured around 100. donald trump has congratulated turkey's president, recep tayyip erdogan, on winning a referendum which will give him sweeping new powers. international observers have criticised the poll, calling it unequal, and opponents in turkey want to challenge the result in court. but at a rally in ankara mr erdogan said the vote ended all debate. translation: know your limits.

turkey will neither listen to, look at, or acknowledge this political report we will continue in our own way and we will continue to walk our path. this country has had the most democratic election, the likes of which has never happened in any western country. a short time ago, i asked jamesjeffrey, a former us ambassador to turkey and iraq, if the referendum result is a step forward for the country. that depends on what kind of turkey you want. roughly half of the population wanted to see a strong man rule like the one we have. this is institutionalising the kind of thing he has been doing for some time and legalising it. the other half wanted to see turkey

on a different route. the result was a slim margin. we have to see if there was any voter fraud. they voted for him. it's kind of like brexit. do you see this as a done deal? an absolute victory for president erdogan despite the criticism of observers and hopes for court challenges? well, we'll have to see. what the 0ecd said, who looked at this, they said they were vote on the ballot at the last moment. it wasn't a fair playing field because president erdogan dominated the news media. that's different to saying that the vote was wrong or there was fraud. that would be a significant change. at the moment, we believe he won fairly, though not by much. turkey is an important country, strategically important in the region.

it is a nato member and is sheltering millions of refugees who might otherwise be in europe. how do you think europe and the west should deal with the situation? president trump made the right decision. this is not 15 years ago in the post—end of history world where everyone is tried to become good, liberal democracies. we have, as you havejust heard, the north korean nuclear threat and iran running amok. in the last week there was sarin gas in syria. there is russia and china. we need someone who we can work with who supports the global status quo. turkey, for all of its faults, it does. coastguard officials in italy have reported a surge in migrants being rescued from the mediterranean over the easter weekend. reports claim more than 8,000 people were saved from boats mainly travelling from libya.

authorities believe improved weather conditions have encouraged traffickers to increase the number of crossings. greg dawson reports. it has become a familiar sight in recent yea rs, it has become a familiar sight in recent years, a lifeline thrown to a rubber dinghy recent years, a lifeline thrown to a rubberdinghy in the recent years, a lifeline thrown to a rubber dinghy in the mediterranean. squeezed together are 58 migrants who have set sail from libya. squeezed together are 58 migrants who have set sailfrom libya. in this case they are taken on board a spanish coastguard boat. these people are just spanish coastguard boat. these people arejust some spanish coastguard boat. these people are just some of the reported 8300 pulled from europe's waters over the easter weekend. 0n 8300 pulled from europe's waters over the easter weekend. on monday, a german rescue ship docked at a port in sicily carrying more than 1000 people found in on seaworthy boats 30 kilometres adrift from the libyan coast. altogether we have 998 people who are male. we have 183 who are female. eight of them are pregnant. a28 persons are under 18

yea rs of pregnant. a28 persons are under 18 years of age. tighter controls and an eu deal has stemmed the numbers of migrants crossing from turkey to europe. at italy is seeing an increasing number of arrivals travelling from libya. ——... italy. it is believed the sudden surge is down to traffickers taking advantage of good weather in the mediterranean, but the journey remains perilous. these images show migrants being pulled from the sea and taken aboard a maltese rescue ship. they are the lucky ones. it is thought at least eight people drowned over the weekend. although the migrant crisis has subsided from its 2015 peak, the number of people attempting to get to europe remains high. the un estimates more than 30,000 people have arrived by sea so far in 2017, with many tens of thousands expected to risk their lives during the summer months. a major manhunt is underway in the united states, after a man shot dead a grandfather, apparently at random, then posted footage

of the killing on social media. facebook has said it is reviewing the way it deals with violent videos like this one, which remained on the site for over two hours before being taken down. i asked our correspondent peter bowes in los angeles to give us an idea of the scale of the manhunt. yes, it is. a huge manhunt. notjust in ohio where this happened, the city of cleveland, but right across the united states. the police are saying, they have no idea where this man is. they have had a few reports of possible sightings, but nothing especially substantial. so, it is a huge manhunt. many, many resources, people, they are working on this across the country. and the police are describing this man as, of course, potentially dangerous and armed. first of all, the story seems to be the murder was committed on facebook live. viewed live. now it seems that is not the case. no less horrifying.

now it seems he has claimed more victims. it was not on facebook live, as you said. facebook released a timeline in terms of when the various videos were uploaded. there were three videos. the third was facebook live. that was essentially the confession after the murder. there were two earlier videos. one a minute or so before the actual murder in which he said he intended to commit murder. then there was the killing itself, which he shot on his phone and then uploaded to facebook to be and then just a few minutes after that, and people have seen this it is a video shot in his car. this was live. he was in a conversation rambling to an unknown person. he talked about how he just snapped and described himself as a monster. it seems he blames everyone but himself whatjust happened. the family of the one known victim

have been responding. yes. they are understandably distraught as to what happened. they say they have seen the video, which of course makes it all the more terrible for them to have had the experience that. they have seen what the grandfather, 7a years old, had to go through. the family is grieving. people are looking into the situation and saying how could this have happened? he seems to have had quite a good reputation. the people who have known him have been talking as well and saying they just cannot understand what went on in his mind and what caused him to do this. stay with us on bbc news. still to come, a political fightback in the deep south. why the democrats are hoping georgia could become ground zero

in the battle against donald trump. the stars and stripes at half—mast outside columbine high. the school sealed off, the bodies of the dead still inside. i never thought they would actually go through with it. some places have already had nearly as much rain as they would normally expect in an entire year. for millions of americans, the death of richard nixon in a new york hospital has meant conflicting emotions. a national day of mourning next wednesday sitting somehow uneasily with the abiding memories of the shame of watergate. and lift—off of the space shuttle discovery with the hubble space

telescope, our window on the universe. this is bbc news, i'm mike embley. our main headline: a member of north korea's government has told the bbc his country would react with a pre—emptive nuclear strike if it saw signs that the us was preparing an attack. it's less than a week until the first round of the french presidential election, and polls suggest it's now a four—person race. on monday evening, the far right candidate marine le pen laid out her tough line on immigration. translation: for france, i would decide on a moratorium on all legal immigration to stop this frenzy, this uncontrollable situation that is dragging us down.

a moratorium to take stock of the situation before putting new, much more drastic, more reasonable, more humane, more manageable rules and regulations in place. there are four candidates in the running, with the centrist candidate emmanuel macron and marine le pen pretty much neck and neck in the polls. the centre right candidate francois fillon is not far behind, nor is the far—left candidate jean—luc melenchon. 0ur correspondent lucy williamson has more 110w on his surprising run. jean—luc melenchon has been enjoying a different kind of political party, the kind which comes with a big group of people and a sense of celebration. 0nce seen as the protest vote, the communist backed candidate has surged to within a couple of points of the presidential favourite, with his lively way of speaking and his anti—elitist slogan, ‘chuck ‘em out.‘ translation: this campaign has become more than a campaign, it's huge populist

mobilisation which rings in a new dawn. mr melenchon wants to pull france out of eu treaties, ramp up public spending and introduce a top rate tax of 90%. friederick hasn't voted for anyone in more than a decade. translation: i'm a worker and most workers today vote for the right or the far right, it's not in their interests. camille says she's 80% sure of voting for him and that her friends are leaning towards him too. all my friends are going to vote melenchon, all of them. i think there's really a big change among people my age and the youth in general. the trump election made me realise that i need to take a position. his rivals are starting to worry. campaigners for the liberal favourite, emmanuel macron, are now targeting underprivileged

areas where his far—left rival is expected to do well, with specially written leaflets and instructions to target melenchon supporters, along with undecided voters. nobody knows what will happen, that's why we are here today, because we have to convince more and more people to vote for him. this is now becoming a four—way race with three of the candidates seen as political outsiders and a third of voters still undecided. analysts say france is in uncharted territory and the election is impossible to predict. mr melenchon first drew attention to his campaign by appearing at his rallies via hologram. he's planning to appear simultaneously at six locations tomorrow. if this election has shown anything, it's that the constraints of one candidate or another can turn out to be just a trick of the light. lucy williamson, bbc news, paris.

now to the us and the well—heeled suburbs of atlanta may seem an unlikely place to start a political fightback against the republicans, but that's exactly what democrats hope to do on tuesday. rajini vaidya nathan reports from georgia's sixth district. we need some more democrats in washington, trump is a disaster. who do you think should win the seat? a republican candidate. for the very first time i'm voting democrat. all chant: flip the sys! the sixth congressional district in georgia's been in republican hands for decades, but democrats think this man can win it back. let's win this on april 18th... jon 0ssoff is a political adviser turned documentary maker and he has raised more than $8 million in a race that has been dubbed the ‘make trump furious' campaign. more than anything i think it would be a win for the thousands of grassroots volunteers

who are getting involved in this community, many of whom have never been involved in politics before who see this is a moment where we need to stand up and make a statement about the kind of politics we want. there's no limit to the number of candidates standing for the party and so there are a whopping 18 contenders, 11 are republicans, which could split that party's vote. unlike on the democrat side where a coronation, republicans believe in competition. that competition has seen a number of antiestablishment candidates enter the fray, including businessman bruce levell, who's close to donald trump. this whole game's been changed across the country and you'll see in the next two years you will see in mayoral races, city council races, state house races, congressional races, because people are tired. republicans and democrats have done a horrible job of getting involved with special interests and lobbyists and pay to play, that's the tension now in dc. this crowded field of candidates includes local politicians,

business people who have never held office and democrats trying to fight back. in many ways this race reflects politics across america and that's why it's being watched so closely. in november, donald trump won this district by a tiny margin after many republican voters deserted the party. the result here could hinge on how they vote this time. traditionally i have been voting republican. i've not really been happy with the trump administration and i want this as a message against the trump administration. i think more democrats are excited than the republicans this time around because of what we saw the last election. i'm backing a republican candidate that i think will do a good job. i don't really care for republicans these days, not a fan definitely of donald trump's, i'm probably going to vote for the democrat. whatever happens here will send a message across america. could this be the start

of the democratic comeback or will it cement the republican party under donald trump? rajini vaidyanathan, bbc news, in georgia's sixth district. it's a form of dress that's popular with religious muslims around the world. in china, though, the hijab, which covers the head and neck, remains taboo. only a few women dare to wear the garment, but one girl wants to change that by showing the hijab's beauty to the public. translation: i will keep wearing my hijab and stick to my religious beliefs. my muslim name is rahman, it means "gift. " my muslim identity makes me unique and uncommon in china. a lot of people misunderstand and stereotype me because of this. i want to be the face of chinese hijabis on behalf of muslim women. i was born in qinghai province.

schools only taught us atheism. i didn't wear a hijab until i started university. in college, i got the chance to deeply study muslim religion and culture. that's when i decided to start wearing the hijab. in the beginning, people didn't understand me. they made me go for psychological council. they asked if i was manipulated by evil groups or had any connection with them. because of the hijab, i also had trouble finding work. my firstjob was teaching chinese in a secondary school in my hometown qinghai. the school didn't want to have

teachers with hijabs. they felt it would be a bad influence. now i'm running a studio in beijing designing hijabs and muslim clothes. i want to make them more delicate to show the beauty of muslim women. i hope muslim women can confidently wear hijabs on the streets and stay elegant in workplaces. the latest instalment of "the fast and the furious" has raced

to the top of the box office chart, breaking an international record in the process. the eighth film in the action thrillerfranchise, entitled the fate of the furious, took an estimated $532 million globally over the easter weekend, making it the strongest worldwide debut ever. now, it wouldn't be easter monday in washington without the annual white house easter egg roll. this year's event is the first for the president and first lady and about 21 thousand people turned up, in their easter best to watch. activities include ‘bunny hopping' and whacking eggs with wooden spoons. the tradition dates back to 1878, and one member of the trump administration was already familiar with the event. in 2008, press secretary sean spicer played none other than the easter bunny himself. this year he was upgraded to reading children's stories hello there.

the weather may provide something of a shock to the system early this tuesday morning because temperatures have been dropping away. a cold and frosty start to the day, but after that chilly start, there are plenty of sunny spells on the way. high pressure firmly in charge of our weather at the moment, giving us largely dry conditions, and behind this weather front, the cloud has been clearing. and underneath those clear skies, temperatures have been dropping. many areas, particularly out in the countryside, starting the day below freezing. but, as i mentioned, after that chilly start, we will see plenty of spells of sunshine. a little bit breezy down towards the south—east, so that will make it feel particularly chilly, and as we go on through the day, cloud will gradually increase from the west, so the sunshine will turn increasingly hazy. in fact, by the end of the afternoon, i think the skies

will be largely grey across northern ireland and the western side of scotland, maybe even the odd splash of rain into the western isles. but for shetland, for 0rkney, for eastern and southern scotland, we should hold onto some hazy sunshine, just seven degrees in aberdeen, eight or nine in edinburgh and glasgow. and with some high cloud spreading across northern england down into wales, again the sunshine here will turn a little bit hazy through the afternoon. 11 degrees there in aberystwyth. fairly light winds across wales. light winds too across the south—west. maybe 13 with a bit of shelter there in plymouth. some patchy cloud across the midlands. east anglia and the south—east should keep plenty of sunshine but pretty cool, particularly around the coast of east anglia. now, as we go on through the night into wednesday morning, england and wales where we keep clear skies will turn very cold again, a widespread frost. not as cold for northern ireland and scotland because here we'll have more cloud and some outbreaks of patchy rain courtesy of this very weak weather front just sinking its way into the picture. but behind that front we start to bring in more of a westerly wind,

so won't be as chilly across scotland and northern ireland on wednesday. some extra cloud also sinking into northern england, but through the midlands, south wales, down into southern england, here the best of the sunshine, 1a degrees the top temperature there in london. temperatures in the south particularly could rise further on thursday and friday. there'll be some further spells of sunshine. generally a fair amount of cloud around by this stage. so, to sum up this week, we'll see very little rain, it will be mostly dry. the days will be turning warmer, although some of the nights will continue to be frosty. but then by the end of the week and into the weekend, well, it looks like cold air will return from the north, so those temperatures will drop. quite a chilly feel, i suspect, by the coming weekend. this is bbc news. the headlines: in a rare interview, a senior member of north korea's government has told the bbc his country is prepared to launch a nuclear strike — "all—out war" — if the united states decides to attack it. the vice foreign minister also said missile tests would continue, "weekly, monthly, yearly," despite international condemnation. donald trump has telephoned turkey's president —

recep tayyip erdogan — to congratulate him on his victory in sunday's referendum, which will give him sweeping new powers. international observers have criticised the fairness of the poll, and opponents hope to challenge the result in court. mr erdogan is extending the state of emergency in turkey for another 3 months. facebook is speeding up the way it handles violent videos and other material violating its standards — after video of an apparent random killing stayed on the site for more than two hours. the alleged gunman is still on the run. now it's time for hardtalk.