hello, my name's tom donkin with a very warm welcome to bbc news, broadcasting to our viewers in north america and around the globe. here's our top stories: defiance as north korea test—fires another ballistic missile. the us says the world must do more to curb its nuclear ambitions. failing to act now on the most pressing security issue in the world may bring catastrophic consequences. violence across brazil after the country's first general strike in 20 years. millions are protesting over proposed changes to pensions. as president trump approaches his 100th day in office, we report from ohio, where some say he's sparked a rust belt revival. france's national front replaces its leader for the second time in just three days following controversial comments about the holocaust. hello and welcome to bbc news.

in the last few hours, the us military and south korean officials have confirmed that north korea fired a ballistic missile which exploded shortly after launch. the failed test, reportedly from near an airfield in pukcchang, camejust hours after a special session at the un security council in which the us pushed for tougher sanctions on the pyongyang regime. barbara plett—usher has this report from the un headquarters in new york. after weeks of mounting concern in washington about north korea, the secretary of state arrived at the united nations to make his case. un sanctions aren't working, was the message. there needs to be a new campaign of pressure. and he clarified the stakes. ultimately this is being driven by america's own national security considerations, he said, so it is serious. with each successive detonation and missile test, north korea pushes north—east asia

and the world closer to instability and broader conflict. the threat of a north korean nuclear attack on seoul or tokyo is real, and it is likely only a matter of time before north korea develops the capability to strike the us mainland. indeed, the dprk has repeatedly claimed it plans to conduct such a strike. given that rhetoric, the united states cannot idly stand by. nor can other members of this council, who are within striking distance from north korea missiles. despite un pressure, north korea has been able to accelerate its weapons programme, and shortly after mr tillerson spoke, it fired another missile, although that test seems to have failed. still, it was an act of defiance, like this massive live—fire exercise last week. only tighter sanctions and greater diplomatic isolation might force north korea to give up its weapons,

said the secretary of state, and its powerful chinese neighbour was the key to make that work. but the chinese foreign minister pushed back. translation: mr president, china is not a focal point of the problem on the peninsula, and the key to solving the nuclear issue on the peninsula does not lie in the hands of the chinese side. that said, as a close neighbour to the peninsula, and with a responsible attitude for peace and stability on the peninsula, and in the region, china has over the years made unremitting efforts, and played a unique role in promoting a negotiated solution of the issue. china wants immediate negotiations, not a military buildup, like this us missile defence system in south korea, or more us warships in the region. that just escalates tensions, it says. but the trump administration is keeping open the threat of military action in case of further provocations. the latest missile test probably won't be enough of a trigger

for that, but it may help strengthen international resolve to put the economic squeeze on north korea's determined young leader. barbara plett—usher, bbc news, at the united nations in new york. a little earlier, president trump responded on twitter to the missile launch. he wrote: our correspondent laura bicker is in washington. she explained the significance of president trump's tweet. well, i think what that tweet suggested that president trump is going to lean on what he sees as his new ally, president xi, in china. those talks in mar—a—lago, in florida just a few weeks ago, he seems to feel he has a rapport with president xi, or an understanding with president xi. and certainly the us has said that china is showing some kind of willingness to participate

in this process. other options that the trump administration could be discussing tonight... now, we're hearing this from reuters, who have been speaking to us officials on condition of anonymity, but we have been hearing that they could speed up the process of current sanctions, which are already under way, so these economic sanctions, in that they could start targeting north korean banks, or chinese banks. other options, they could... and certainly next week the house of representatives is voting on whether to, push forward with further sanctions or declare north korea as a sponsor... a state sponsor of terrorism. further options, indeed, could also include sending warships to the region, more warships to the region, or more aircraft to the region. that is likely to anger the chinese. but it also may put leverage on president xi, may put a little bit of pressure on president xi, as he may be the key. remember, north korea's trade with china is 85%,

so if president xi turned the screw and put the pressure on, that certainly would be significant pressure indeed. violence has broken out in brazil as police clash with anti—austerity protestors. there are reports of police using tear gas to disperse crowds. it happened at the end of the country's first general strike in more than 20 years, where trade unions called for a stoppage to protest against president michel temer‘s pension reforms. from sao paulo, here's daniel gallas. brazil once again in the state of chaos. peaceful anti—austerity demonstrations in rio quickly turned violent. police were called in, and the clashes intensified. the violence erupted at the end of the country's first general strike in more than 20 years, called by unions in protest at president michel temer‘s proposed pension reforms.

the government says people must work longer before retiring, in order to fix brazil's deep economic troubles. trade unions that organised the strike say the country's poor are the ones who will pay the price for reform. translation: our struggle is to open a path of negotiations, because we are not going to accept this dictatorial attitude of the government, which does not respect its people, which does not talk with its people. translation: today is an historical day, a paralysation for the people. we think that if the young people are on the workers' side, we will succeed in stopping this reform from temer's government, and we will also succeed in overthrowing this government. others agree, but are not impressed by the outbreak of violence. translation: at 85 years of age, i have to go through this? we're going to fight, but we are going to fight the right way, and not like the mess they're making.

translation: the strike was weak, and people need to understand that. the strike doesn't make sense, and the reforms really have to happen. president temer deplored the clashes, saying his government will press ahead with its plan and will work to modernise the country's laws. brazil's congress will start voting the pension reforms next week. "out temer," they chant. people power, they are hoping, will work. daniel gallas, bbc news, sau paulo. let's take a look at some of the other stories making the news. us defence officials say two american special forces soldiers killed in eastern afghanistan on wednesday may have been accidentally shot by their own side. they died soon after dozens of us and afghan personnel launched a helicopter—borne raid targeting the islamic state leader in afghanistan. pope francis has visited a church in cairo where nearly 30 christians were killed in a bomb attack by islamic state militants in december.

he was accompanied by the head of egypt's coptic christian community, pope tawadros. pope francis had earlier urged the leader of all faiths to renounce violence carried out in the name of god. former first lady michelle obama has appeared to rule out running for elected office. in her first public remarks since leaving the white house, she said she wouldn't want to put her children through it again. although mrs obama has played down her political ambitions in the past, this is the first time she has done so since the election campaign. on saturday, president trump marks 100 days in office. he'll spend the actual anniversary at a big rally in pennsylvania. coincidentally, that rally is being held at the same time as the white house correspondents' dinner, which is traditionally attended by a sitting president. earlier, mr trump met possibly some of his staunchest supporters, that was at a meeting of the gun lobby group the national rifle association. the eight—year assault on your second amendment freedoms

has come to a crashing end. applause you have a true friend and champion in the white house. no longer will federal agencies be coming after law—abiding gun owners. applause staying with donald trump's first 100 days in power, if you follow the trail of support for mr trump, you'll find he enjoys popularity in the so—called rust belt, a region suffering from economic decline, population loss and urban decay. the bbc‘s nick bryant travelled to the state of ohio, one of the key swing states of last year's election, to see what voters there make of donald trump's first 100 days in office. when we visited the ohio river valley last summer, this stretch of water was suffering a slow and agonising death. but since donald trump became president, locals have seen

a dramatic and instant turnaround, a rust—belt revival. coal barges are full again, partly because of the relaxation of environmental regulations. 150 boats now work this part of the river, compared to just 25 last year. back then, bob harrison told us america needed a businessman as president, and in 25 years, he has never seen such a turnaround. like the switch was turned on. we're busy. we got more stuff going on, and our business has dramatically picked up. and you think that's the trump effect? yes, you know, italked to lots of different people who talk about it, and call it the trump bump, so it's been good for us. last summer, in the town of clinton, pennsylvania, we came across this huge trump sign erected by a one—time democrat, mike leber. now, it has been put away in the barn, but not through embarrassment. if anything, his admiration for donald trump has grown. just speaking with people,

they‘ re more upbeat. they feel like the government isn't on their back. feels like the jackboot of the government's off their neck. so it gives them a chance to thrive. he promised to revive regions like this. do you think he's doing that? yes, i do. it was trump's hothead temperament that put off american football coach bill timko, when we spoke to him last year. he's bombastic, he's obscene, and ijust can't — i don't like the guy. now, not only a change of sport, but a change of opinion. in these first 100 days, trump has won him over. well, i've changed my mind because he made campaign promises and he came through. and, you know, that's what you want. you want to see that the guy's going to do what he said he was going to do. what about twitter? he needs to stay off of that. you know, that gets him in a lot of trouble. a republican who voted for hillary clinton, amber thompson, was a staunch trump critic, and remains so, but nonetheless applauds his

decision to strike syria. even a blind squirrel finds a nut sometimes. i believe that trump's response to the chemical attack in syria was 100% correct, and i hope that putting pressure on the russians and the assad regime will help to bring an end to this war. i hope that syria will be donald trump's nut. donald trump has been suffering from historically low approval ratings, but in this run—down region, we did not find much evidence of buyer's remorse. president trump has been much like candidate trump, and while that has horrified liberals in america's major cities, who regard him as a national embarrassment, here in the rust belt he is still widely viewed as a potential national saviour. two trumps, two americas. but the region that won him the presidency remains a stronghold. nick bryant, bbc news, ohio. stay with us on bbc news, still to come: face to face.

anthonyjoshua and vladimir klitchko square up ahead of what could be the biggest fight in british boxing history. nothing, it seems, was too big to withstand the force of the tornado. the extent of the devastation will lead to renewed calls for government to build better government housing. internationally, there have already been protests. sweden says it received no warning of the accident. indeed, the russians at first denied anything had gone wrong. only when radioactivity levels began to increase outside russia were they forced to admit the accident. for the mujahideen, the mood here is of great celebration. this is the end of a 12—year war for them. they've taken the capital,

which they've been fighting for for so long. it was 7am in the morning, the day when power began to pass from the minority to the majority, when africa, after 300 years, reclaimed its last white colony. this is bbc news. the latest headlines: north korea has test—fired another ballistic missile, sparking international condemnation. the us wants the world to do more to curb its nuclear ambitions. there have been violent scenes across brazil after the country's first general strike for 20 years. millions were protesting over proposed pension reforms. for more on the developments out of north korea, earlier, i spoke to douglas paal, vice president for international peace studies, at the carnegie endowment in washington. he served previously as director of asian affairs

on the national security council of presidents reagan and george bush sr. he told me the situation may now have moved beyond sanctions. well, we have had a net around north korea, with sanctions, but it has never been a tightly woven net. and the hope now is that, with some domestic legislation, to impose something called secondary sanctions, which i can explain, or more pressure on china to close down things which are not susceptible to sanctions from outside, but there could be china's help in a coalition effort to tighten that net around north korea. and, as your report showed, 85% of the trade comes through china, often through very small firms, but some through big oil firms. and there are things china has within its discretion to tighten up. now, the other side of that is that china doesn't want to put north korea out of business. it likes having a buffer state

between it and the american ally in the south korean government, and so they have been caught in the horns of a dilemma. they want north korea not to be nuclear, but want it to remain stable, and not threatened. and they are being forced now by american efforts to build a coalition of nations, at the united nations and elsewhere, to try to press china to do more. just briefly, secondary sanctions, take us through those. secondary sanctions are those which would be applied to firms who try to do business with north korea and try to do business in the us. if we can identify that they have done business with north korea, they will be denied access to the american financial system. now, i happen to believe, along with people watching that situation, that the number of businesses in china that do business with both is already very small, because they fear these sanctions. the hard companies to get to are the ones that are not in our market, or in europe,

but have a bilateral trade with north korea, and depend on it for their livelihood. and for china to shut them down, it has to find a subsidy, some kind of compensation for them to go into a different line of business. our correspondent laura bicker, in washington, said that donald trump's latest tweets suggest that he is really looking at china now to use its leverage with north korea. how much leverage do you actually think china still has with north korea? well, it is not how much leverage they have, but how much are they willing to use. they have plenty of leverage. they they could shut down the oil supply, and that would penalise the north koreans. russia would not want to go in and make up for that. no—one else would, either. so they have that at their discretion. the question is do they want to risk the collapse of north korea, one of the last sister communist regimes, strange though it may be, and have the possibility of south korea's borders extend all the way up to the chinese river

yalu, and be potentially an american ally, in south korea, right on china's frontier. that was douglas paal, vice president for international peace studies, at the carnegie endowment in washington. in france, the far—right national front has replaced its leader for the second time in just three days after a row erupted about past comments he made about the holocaust. jean—francois jalkh denies claims he questioned the reality of nazi gas chambers. mrjalkh was temporarily put in charge, after marine le pen stepped aside to fight for the french presidency. sarah corker reports. once again, marine le pen's far—right national front party found itself fighting controversy over alleged holocaust remarks by a senior official. this man, jean—francois jalkh, who she named the party's interim leaderjust days ago. he's accused of praising the work of a convicted holocaust denier. and so outside her campaign ho, ms le pen was on the defensive.

translation: he's very affected by this controversy, which he considers deeply unfair. he's going to sue over the claims. i've appointed one of the vice presidents of the national front, in this case steve briois, to be the interim president. this is an unwelcome episode. later, on french television, ms le pen emphasised her hard work to purge the party of the anti—semitism that was its trademark under herfather. and her rival, centrist emmanuel macron, visited the site of a nazi massacre on friday. france's wartime past, it seems, is taking centre stage in the race for the presidency. translation: i want, in the context of this campaign, at an important time before the second round, to come here and pay respect to these victims, to theirfamilies, and to an important and sombre page in our history. french voters face a stark choice

between a resurgent far—right and a pro—eu former banker, whose political movement is barely a year old. meanwhile, the far—left‘s jean—luc melenchon declined to back either candidate, dismissing it as a contest between extreme finance and the far right. translation: amongst the 7 million people who voted for me in the first round, i'm almost certain there must be a tiny minority that are going to vote for the national front. while mr macron may be the front—runner, ms le pen has attracted a record number of voters, and there are more intense days of campaigning ahead of the may 7 run—off. sarah corker, bbc news. staying with friends, and arnold schwarzenegger has received a reward for his environment to work. —— staying with france. the former actor and governor of california received the legion of honourfrom french president francois hollande in paris —

for his dedication to fight global warming and promote renewable energy. we have 7 million people die every year because of pollution. and this is why it is so important that we go and reduce the greenhouse gases and reduce the pollution. we can do it. because it is man—made. we have created the mess, and now we have to get rid of the mass. at least ten people have died in colombia after a building collapsed. rescue operations are under way to find any survivors in the rubble. several others have been injured after the building that was under construction collapsed on thursday. one of the biggest bouts in british boxing history will take place at wembley stadium tonight. more than 90,000 people are expected to be there to watch heavyweight anthony joshua take on vladimir klitschko — one of the most decorated heavyweights of his era. but, joshua, who only turned professional after the london olympics, is actually the favourite to win.

natalie pirks has more. one is the young world champion who has brought integrity back to heavyweight boxing. the other is the elder statesman who has been the man to beat for 19 years. but in a build up free of histrionics, the tone has been distinctly more intelligent. i feel young, hungry, humble, and totally obsessed. he's obsessed, he's got passion, he's in love. so when i do defeat him, i'd like people to say i faced the best man possible, and a man coming off defeat is the best man, because you learn from your mistakes. i think that's why i'm looking forward to the challenge. with just 18 pro fights under his belt, though, joshua concedes 1a years of experience to the erudite a1—year—old, a man whose camp he joined as a youngster to learn from the olympic gold—medallist. joshua, of course, went on to become one himself. the audience of 90,000 here inside wembley stadium will break post—war boxing records.

the fight will be watched in more than 140 countries, and in britain alone more than one million people are expected to pay to watch it. the fight could generate up to £60 million, which would mean, for anthonyjoshua, that come sunday morning, he could be £15 million richer. the world may well be watching, butjoshua's mum won't be. honestly, i've hit people before, and i admire the shot, because it's — i have the best seat in the house. you know? that's why i don't want my mum to be that close to seeing her son go through war. she's important in your life? she's important, yes. let's keep a smile on herface. i can't remember the last time i see her cry, or worried, and i'd like to keep it that way. she might well be about to miss a career—ending fight for klitschko, and a career—defining one for her son. natalie pirks, bbc news, wembley. a giant pool filled with a hundred million sprinkles is the main

attraction of an ice cream museum that's just opened in los angeles. take a look at the pictures. the sprinkle—filled ocean is a metre deep and can fit a dozen people in there. visitors can interact with a room of giant lollies, life—sized gummi bears and a gallery of suspended bananas. just before we go, a reminder of how toa just before we go, a reminder of how to a story: north korea has launched another ballistic missile hours after rex tillerson called for tougher international approaches towards kim jong—un‘s government. south korean and american officials say the test actually failed. in a tweet, resident trump said that north korea showed disrespect for its main ally, china. don't forget you can get in touch with me to discuss any of the stories we've been covering here via twitter — i'm @tomdonkinbbc. but for now, from me and the andy

king, it is goodbye. —— and the team. well, the bank holiday weekend is upon us. let's see what the weather's up to. it's looking a little bit mixed. a little breezy but reasonably warm i think for most of us and there is some rain on the way, but not everybody‘s going to get the rain. let's see the weather map in the short term. weather fronts are fairly close to the uk, but far enough to give us a dry start to the day. so this is what it looks like around 4—5am in the morning. lots of clear spells around, temperatures in towns and cities around 6—9 degrees celsius, so not a particularly chilly start to the day. saturday morning, dawn‘s on a bright — if not sunny — note for most of us. there will be a little bit of cloud here and there, but the cloud breaks up through the morning and the best of the sunshine on saturday is expected across the southern half of the uk, especially

the south coast. so looking out to sea, it might be clear blue skies. temperatures at lunchtime, 1pm there, 15 degrees in london. but for most of us, around 12—13 degrees, and just maybe one or two light, stray showers around, but that's pretty much it. nice enough there in inverness as well, about 12 degrees with some sunshine. the afternoon's not going to change much. it will turn breezy across some of these western areas, maybe even later in the day in northern ireland. around the coasts it could even touch gale force. how are we doing compared to the rest of europe on saturday? fairly similar. 17 in paris. we are doing better than madrid. madrid about 1k degrees. rome will be sunny at 22. the real heat at the moment across greece, there, into the 30s. back to the uk, saturday and into sunday, low pressure still out there in the atlantic. but starting to push weather fronts ever closer. so already, on sunday, the weather will be going downhill across south—western parts of the uk. quite strong winds as well — notjust in the south—west, but also in these sunnier spots too. along the north sea coasts, really blustery winds. so feeling really quite chilly on the coast.

ahead of this weather front and the rain it could get up to 18 in london and possibly the mid or high teens in scotland as well. and then through the course of the evening, this is sunday evening, that rain will be slowly pushing further north and east. by the time we get to monday, you can see the weather front in the north and the chance of catching some showers across southern areas. so a bit of a mix. certainly the best day of the weekend looks as if it will be sunday, with dry weather across the uk. and this is what the average temperature at this time of year. 16 in the south and 1a in the north, so that's roughly what we're getting. this is bbc world news. the headlines: north korea has launched another ballistic missile, hours after the us secretary of state, rex tillerson, called for a tougher international approach towards kim jong—un‘s government. according to south korean and american officials, the missile exploded shortly after lift—off. president trump said on twitter the launch showed north korea's disrespect for its main ally, china. there've been violent

scenes across brazil, after the country's first general strike for 20 years. millions were protesting over proposed pension reforms, forcing schools and banks to close and paralysing public transport. france's far—right national front has replaced its leader for the second time in just three days after a row erupted about past comments he made about the holocaust. jean—francois jalkh denies claims he questioned the reality of nazi gas chambers. campaigners claim that controversial plans to build a garden bridge over the river thames in london are dead after the mayor said he would not