—— eniola aluko is left out old. good afternoon and welcome to the bbc news at one. donald trump has said the united states will "solve" the threat posed by north korea's nuclear programme. in an interview with the financial times, the president said the us would act alone if china wouldn't intervene. he made his comments ahead of a visit to the us by the chinese president this week. here's our correspondent wyre davies. how do you solve a problem like north korea and its growing military ambitions? under the leadership of kimjong—un ambitions? under the leadership of kim jong—un north korea ambitions? under the leadership of kimjong—un north korea is increasingly seen as a rogue nation, threatening enemies and conducting nuclear missile tests. china has also become frustrated and ties are strained. but donald trump wants the chinese to do even more. if china isn't going to solve north korea, we will, that's what i'm telling you. mrtrump will, that's what i'm telling you. mr trump told that the ft. asked if he could succeed alone he replied, totally. it's not the first time since his election that mr trump has pushed the issue of north korea towards the top of his foreign policy to—do list, without being specific. obviously north korea is a big, big problem. and we will deal with that very strongly. one of those who interviewed the president said the reason for his concern is clear, ahead of his much as dissipated meeting this week with the chinese premier. at the moment, and president 0bama said this to president trump just after the election, this, the north koreans, will have the capacity to hit san francisco and the californian coast by the end of his first term. with repeated warnings about the missile capabilities of north korea, officials of the trump administration are talking tough. during a recent trip to south korea, secretary of state —— the secretary of state said preliminary military action is an option. but it is widely believed that military action against the north korea would lead to very high civilian and military casualties. it is risky. not only because of north korea's recent advancesin because of north korea's recent advances in nuclear technology, but because it has thousands of artillery pieces pointing at the capital of south korea. even if you we re capital of south korea. even if you were able to rob all those after a first salvo, the damage, the death count, would be absolutely horrific. the premier's visit the us will be the most important yet by a foreign leader. from regional peace to global trade, chinese and american leaders have much to discuss. discussions which mr trump has acknowledged will be difficult. well let's speak to our correspondent in washington — gary 0'donoghue. president trump says he will solve the north korea problem. how? that's the north korea problem. how? that's the big question. because what they've tried until now, what successive american administrations have tried, is ever tighter sanctions. there will have been round and round of un sponsored sanctions. they haven't stopped the north koreans developing their programme. pressure on china to keep north korea in line, but hasn't worked. they are even deploying some anti—missile technologies to south korea, and that has not deterred north korea, either. the dangerfor the americans is they believe north korea is getting closer to being able to minute to rise a nuclear warhead, put it on an intercontinental ballistic missile which could reach the us, and a mid range missile which could hitjapan, or potentially qualm. donald trump seems to be saying to the chinese that now is the time, but the question is, will they react to that? -- question is, will they react to that? —— guam. north korea is useful to them in that part of the world in terms of stopping american big enemy, if you like, right on their doorstep. thanks very much. five people have been charged following what police described as a "brutal attack" on a 17—year—old boy in croydon. the teenager — who is of kurdish iranian descent — was set upon after telling a group of people that he was an asylum seeker. he is said to be in a serious but stable condition in hospital. our home affairs correspondent tom symonds is in croydon. the troubling thing about this attack was the sheer number of people involved. it happened at the bus stop there behind me. a young man, a young student, a kurdish student and his two friends waiting there were set upon by 20, 30 people who came out of the pub here behind me. police have made some arrests. there have been some charges. but their investigation is continuing. police are still looking for these two people. one man appearing slightly younger, the other slightly older, they may have been part of the mob which attacked the 17—year—old kurdish student and his friends. detectives today said come to us before we come to you. this morning the officer in charge of the case said that in total 11 people have been arrested in connection with what she said was a horrendous assault. i think this is powered by numbers. there has been an incident outside the pub. they have picked on three young men. there was no reason for this attack. and i believe that because of the numbers involved people have just jumped on because of the numbers involved people havejustjumped on the back of it, and this has turned into this violent brawl where somebody has been viciously beaten and is very lucky not to have lost his life. and the bust up behind us is relevant? absolutely. —— bus stop. people have come from the pub and attacked these individuals in the street. 0ne come from the pub and attacked these individuals in the street. one was kicked and beaten and left on the ground. the two friends of the victim ran while he was chased by the group. he got as far as this street corner where he was found with serious head injuries. neighbours came to help. unlike, police said, some of his attackers, who may not have struck any blows but did nothing to stop this happening. at croydon crown court five people in their early 20s have been charged with violent assault. darrell and daniel edwards or live a short walk from wherever it happens. neighbours who were worried about giving interviews said police had even dusted cars for fingerprints. and there is a constant police presence here in an area where this attack has raised tension. 0ver over at the court in croydon in those five people are appearing as we speak in front of magistrates and discussions are being had about bail. and i am told there will be a hearing coming up shortly in which they will appear, in this case, as it continues. as i say, police in this area are still very much present, still very much looking into that large group of people who we re into that large group of people who were involved in that attack, and they are trying to find out who else that may have included. thanks very much. the spanish foreign minister, alfonso dastis, has said he's surprised by the tone of the british reaction to talk about the sovereignty of gibraltar. the government of the territory has criticised the eu for including it in its draft negotiating strategy with the uk about brexit. the foreign secretary borisjohnson has said gibraltar would remain british as long as its people wanted that to be the case. 0ur correspondent tom burridge sent this report from gibraltar. rush hour between gibraltar and spain. thousands cross onto the rock every day to work, and there is some uncertainty here about what brexit will mean. translation: i'm overwhelmed, because we don't know what will happen, and whether we will be able to continue working here. maria tells us it's important that the arrangements at the border stays the same for her and other spanish workers. do you think brexit will cause problems for gibraltar? no. why not? there is too much in both parties, well, it isn't in both parties' parties, well, it isn't in both pa rties' interests parties, well, it isn't in both parties' interests financially for there to be any sort of people. this is currently an internal eu border, but probably in two years that will change. this gives you a sense of how intertwined peoples lives are over on that side of the border in southern spain and hearing gibraltar. the arrangements at the border will be part of the negotiation between britain and the eu about what brexit means here, and the eu says spain's voice will be heard. spain has long complained that gibraltar‘s wealth is partly down to lower taxes on this side of the border. madrid kept relatively quiet this weekend, compared to the rhetoric back home. but this morning the spanish foreign minister suggested britain is overreacting. translation: the spanish government isa translation: the spanish government is a little surprised by the tone of comments regarding gibraltar, coming out of britain, which is a country known for its composure. almost everything on brexit and what it will mean for gibraltar is, for now, speculation and theory. but speaking ata speculation and theory. but speaking at a meeting for eu foreign ministers, the foreign secretary eggen said that gibraltar‘s sovereignty is not up for debate. eggen said that gibraltar‘s sovereignty is not up for debatelj think sovereignty is not up for debate.” think the british government is very clear about the fact that the sovereignty of gibraltar is unchanged, it won't change, and cannot conceivably change without the expressed support and consent from the people of gibraltar and the uk. that isn't going to change. but what is changing as britain's relationship with the eu, and therefore gibraltar‘s relationship with spain. two neighbours who are not the best of friends. are you drowning in credit card debt? well, the financial services regulator is proposing new rules for credit card companies to help millions of customers get out of long—term debt. the regulations are designed to help borrowers whose failure to settle their accounts means they end up paying more in charges and interest than the sum they originally borrowed. 0ur personal finance correspondent simon gompertz reports. credit cards, so convenient, but the interest and charges rack up. some people are eventually paying £2 50 for every £1 they have borrowed. —— £2.50. the 3.4 billion people who are in persistent credit card debt. we wa nt are in persistent credit card debt. we want to make sure they get help much sooner than otherwise done, and that they get it on a predictable basis. persistent that means they are spending years are paying more in charges and interest than in repayments. after 18 months the card company will have to prompt them to pay back faster. after three years, a formal repayment plan should be proposed, and if the customer cannot afford it charges could be waived on the card cancelled. credit card companies should take on more responsibility to help people that may be more vulnerable. they shouldn't encourage people to have credit cards who cannot afford them. people do have to take responsibility for their own money, as well. the cost of being stuck in credit card debt can escalate and in the end it is the card companies who are making money out of it. it's estimated that if these measures are implemented effectively it could save the card uses up to £1.3 billion a year. debt experts say thatis billion a year. debt experts say that is treating the symptom and not the cause, which is that people are allowed to go so long without repaying. you look at the weather credit cards are structured. minimum repayments, people can take out a large balance and repay it in very small amounts, which is trapping millions of people in persistent debt. unless that is changed and the structure of products are at a more realistic repayment at the outset, we are likely to see more people falling into persistent debt in the future. credit card companies say they will look at the proposals, which they welcome, use of cars is rising rapidly is a pressure to help borrowers who find themselves with problems... —— use of cards. restrictions on the use of police bail come into force today in england and wales. the amount of time a suspect released from custody can remain on bail will be limited to twenty—eight days in most cases. the decision is in response to concerns that people were being left in limbo for months or even years. but police have questioned the move, as our home affairs correspondent june kelly reports. famous faces who've been under police investigation, finally told they wouldn't be facing charges, but only after long months on bail. they were among the 5000 still on bail after a year. the government says the system needed rebalancing. well, what's happened in the past is people could be put on bail with no end in sight and no check or balance, which means we had thousands of people could be on bail for 12 months or more. in fact, there were examples of people on for several years, and that's just not acceptable. we've got to make sure we've got a proper system that is appropriate and proportionate. the former deputy editor of the news of the world, neil wallis, was cleared of phone hacking by a jury after spending too long periods on bail. this devastated our lives. it destroyed my marriage. 0ne bail. this devastated our lives. it destroyed my marriage. one of my children had a breakdown. another one of my children lost their long—term relationship because of the pressure. iwas long—term relationship because of the pressure. i was sacked on the day that i was arrested and bailed. i was left bereft. from now on, some suspects won't be suspect —— subject to police bail at all. for those who are, the limit would be 28 days. but are, the limit would be 28 days. but a senior police officer will be able to grantan a senior police officer will be able to grant an extension of up to three months. the police will have to seek the permission of a magistrate for anything longer. the police federation is highly critical of the changes. 28 days in the cycle of a police officer is not a long time for investigating a crime. you also have to bear in mind in relation to external enquiries, we have external resources . external enquiries, we have external resources. forensic, cps... 28 days is not realistic for them to come back to us. the police federation believes the old system protected witnesses and victims, and helped to prevent further offending. jim kelly, bbc news. we're getting reports of an explosion in the russian city of saint petersburg. it is understood three metro stations are ben close. sarah rensburg —— our correspondent joins me. what do we know? we have heard from the metro in saint petersburg. there has been an explosion on the underground train service. they are investigating the cause. at the moment they expect an unidentified explosive device. that is the only information we have. there are a number of casualties. we have seen pictures from the scene that show at least several people very seriously hurt. the numbers and the extent of their casualties are still being determined at the moment. we know several metro stations have been closed. i have seen stations have been closed. i have seen pictures with many fire engines and ambulances that have obviously rushed very quickly to the scene. it looks like a very serious incident. at the moment, the details of how many people have been caught up in the explosion are still being checked and verified. sarah ra i nsfo rd. our top story this lunchtime: five people are charged after an attack in south london on an asylum seeker which left him with a fractured skull. coming up, now you see it, now you don't — the grammar vigilante on a mission to correct spelling on the streets of bristol. coming up in sport at half past: after just 15 appearances this season, luke shaw is told to take a long hard look at himself if he wants to save his career at manchester united. emergency services and armed forces in colombia are still searching for as many as 300 people who have been missing since a series of huge mudslides engulfed the city of mocoa on friday. more than 250 people are known to have died. 0ur correspondent, anisa kadri, reports. rescuers in colombia hunt for any signs of life. the hopes of finding anyone alive are fading, with hundreds already confirmed dead following the mudslides in mocoa. as bodies are aligned up at this cemetery, families wait outside praying they will not find their relatives inside. translation: the really sad thing is when family members find their loved ones in this situation. it hurts to see it. we are lacking support. the fire service is always here but we need a lot of support. roads and bridges were washed away and houses flattened, after more than a week's rainfall fell in one night. getting help to people living deep within the amazon basin is not easy. but people in the colombian capital, bogota, who donated these supplies hope they get there. troops and children work side—by—side to try to get relief to the injured. translation: the situation in a disaster area is very bad. we can feel the anxieties, even here in bogota. we feel it is everyone's responsibility to help in the disaster area because the number of casualties and missing people is huge, and man—made —— many families are looking for missing relatives. the colombian president has visited the area. critics say he should have done more to protect it from heavy rainfall amid concerns about climate change. last night in a televised address you promised his government would support the victims and pay for the cost of funerals. —— he promised. translation: i know the loved ones lost re replaceable. the pain will stay with us forever but it is possible to mitigate it. it is possible to recuperate. it is possible to overcome the tragedy. hope as possible. we will dedicate ourselves to bringing hope back to mocoa. dozens of children are among the dead. for these survivors at a makeshift soup kitchen, food, drink and shelter will be the start of the process to rebuild their lives. the parents of a baby suffering from a rare genetic condition are today trying to persuade a high courtjudge to let them take him to america for treatment. connie yates and chris gard have now raised over £1.2 million for the treatment of their son, charlie, but doctors here oppose the move, saying there is no cure, and it is time to stop providing life support treatment. daniel boettcher has been in court where the judge hasjust started hearing evidence. yes, there was a preliminary hearing a month ago. today the judge yes, there was a preliminary hearing a month ago. today thejudge has been hearing more detailed evidence. the background to the case is that charlie was born last august. he is almost eight months old. initially he seemed perfectly healthy. when he was eight weeks old he was taken to hospital because it appeared he had been losing weight and getting weaker. he was transferred to great 0rmond street hospital, worry was diagnosed with a rare genetic condition, a of mitochondrial depletion sinden. this has lead to muscle weakness. he is being treated in intensive care. he is on a ventilator. the hospital believes that it now would be appropriate to withdraw life support treatment, that that would be in charlie's best interests, that he should be moved to palliative care. his parents want to palliative care. his parents want to taken to america, where they hope we can receive treatment. an online fundraising site has raised more than $1.2 million that zmapp £1.2 million target. today the court has been hearing evidence from the us from a neurologist who has been asked out the work he has been doing may be applicable to charlie's condition. it has been very technical evidence, but the court has heard it will be key to this case. charlie's parents have been in court listening to the evidence, holding one of his toys. 0ther family members and supporters are in the public gallery. this is the first witness, but the judge will hear all of the evidence from several witnesses before he has to ta ke several witnesses before he has to take that very difficult decision as to what is in charlie's best interests. thank you. a charity claims more than 20 million people in the uk are classed as physically inactive. the british heart foundation says the average person spends over 70 days a yearjust sitting. it warns that inactivity puts people at risk of heart disease, and presently costs the nhs more than a billion pounds a year. here's graham satchell. harriet had no warnings, no symptoms. she was climbing the stairs at home when she had a heart attack at the age of just 44. stairs at home when she had a heart attack at the age ofjust 44. it was like having the rug pulled from under your feet. like having the rug pulled from under yourfeet. i like having the rug pulled from under your feet. i have like having the rug pulled from under yourfeet. i have a like having the rug pulled from under your feet. i have a very young family. i have a very demanding job, which i loved. to suddenly be struck by such a traumatic incident was very difficult. i didn't make time for activity or exercise. i think looking back on it now, i was fairly sedentary. harriet is not low -- alone. the most inactive part of the uk is the north—west of england, according to research. 47% of adults don't take enough exercise. in northern ireland, 46% are inactive. in wales it is 42%. london and the west midlands, 40%. and in scotland, 37%. we estimate that on average most of us spent 78 days of our life each year in a sedentary position. physical activity is important. but you also need to reduce the amount of time each day that you spend sitting at your computer. harriet has now changed her lifestyle. regular exercise, walking, playing with her kids. but inactivity is fast becoming one of the leading causes of premature death. graham satchell, bbc news. now, for years there's been a rumour in bristol that somebody has been going out late at night, correcting bad punctuation on the city's shop fronts. the self—named grammar vigilante corrects street signs and shop signs where the apostrophes are in the wrong place. well, our correspondent, jon kay, has been to meet grammar‘s answer to banksy. he's the banksy of bad punctuation. roaming the streets of bristol, righting wrongs. i'm a grammarvigilante. i do take it to heart. i've been doing it for quite a lot of years now. i do think it's a cause worth pursuing. at home he makes sticky punctuation marks. i'm trying to match the colour of the apostrophe that's needed on the shop... he has even made a special device which he called the apostrophiser which lets him reach the highest shop fronts. oh, look at that, that's worked perfectly. a quick demonstration on the dining room wall. apply the roly—poly end. by day, he's a highly qualified professional. 0nly his family know what he gets up to after dark. i have felt extremely nervous, the heart has been thumping. he started his campaign 13 years ago. this was the first sign he tackled, amys nail‘s. apostrophe, deleted. elsewhere he has added them. he's left his mark throughout this area of bristol, his punctuation mark. there will be some people, maybe the owners of these shops who say, hang on a minute, you haven't got permission, we haven't asked you to do this, what you're doing is a crime, vandalism. what you say to them? i'd say it's more of a crime to have the apostrophes wrong in the first place. there's one sign he has been desperate to correct for years — cambridge motor‘s. motors with an apostrophe s. itjust makes me feel gross... i just think this is just wrong. it's not meant to be like this. it really does need sorting out. the garage is right outside bristol's high security prison. but tonight, he's going for it. using a purpose—built, home—made trestle, he climbs up, cuts a piece of yellow sticky—backed plastic to size and covers the rogue apostrophe. reporter: notice anything? not really, no. what do businesses think? who's done that? there is a man... yes. who lives around these parts, i can't tell you about him. i thank him for what he's done. you don't mind? no, i don't mind at all! no, it's good to see people still caring about english grammar, isn't it? when you go past a sign that you've corrected, and you know that you've made... the word you are looking for is pride. it does make my heart swell slightly when i see the correct‘. it does make my heart swell slightly when i see the correct'. jon kay, bbc news, bristol. you can hear more on the apostrophiser from jon kay on bbc radio 4 tonight at eight o'clock. now, spare a thought for lexi thompson. the american was two shots clear during the final round of one of women's golf‘s major tournaments, when she was penalised by officials, effectively costing her the title. but it was a tv viewer who spotted her mistake rather than a referee. 0ur correspondent, andy swiss, reports. just imagine it. you are on course for the winner of your life, just few holes from glory... but lexi thompson's dream was about to become a nightmare. the reason? this moment from her previous round. look closely. she marks her ball, picks it up and put it down in a fraction ofa it up and put it down in a fraction of a different place, which is against the rules. nobody noticed that the time but a tv viewer spotted it, alerted officials, who then interrupted her final spotted it, alerted officials, who then interrupted herfinal round spotted it, alerted officials, who then interrupted her final round to give her a four shot penalty. yeah is this a joke? no, give her a four shot penalty. yeah is this ajoke? no, not give her a four shot penalty. yeah is this a joke? no, not at all. that's just ridiculous. is this a joke? no, not at all. that'sjust ridiculous. thomson was in tears. she was no two shots behind. her disbelief shared by the watching tiger woods, who immediately tweeted that viewers at home should not be officials wearing stripes. she came remarkably close to winning anyway. she battled back and on the final hole had this putt to win. but agonisingly, victory slipped away. all because of that one eagle eyed viewer.” slipped away. all because of that one eagle eyed viewer. i wasn't expecting that. i did not intentionally do that. to the officials or whoever called in, that was not my purpose. i didn't realise idid was not my purpose. i didn't realise i did that. thomson later time turk fa ns i did that. thomson later time turk fans for helping her through. golf is no stranger to trial by television but its results are rarely this painful. and the swiss, bbc news. time for a look at the weather with tomasz schafernacker. we had such beautiful yet whether yesterday. lots of sunshine. still some good weather today. the weather is starting to turn for some. here is starting to turn for some. here isa is starting to turn for some. here is a beautiful picture from greenwich, from wendy. some cherry blossom. the week ahead is looking a little bit fresher. temperatures will come down. most of the time it is looking to write and there is some sunshine. 0ne is looking to write and there is some sunshine. one thing that is very high today is the pollen. a lot of us are starting to sneeze, mostly across england and wales. scotland and northern ireland, the pollen is and northern ireland, the pollen is a bit lower. let's see the satellite picture. you can see where the sunny skies are across most of england and wales. this is a weather front bringing the rainfall to the north—west, but also, if it was misty orfor the north—west, but also, if it was misty or for the way you were this morning, check this out across parts of east anglia and the south—east. that fog and mist is moving away, so we are left with suntan. different story in scotland and northern ireland. weather systems coming from the atlantic. rain in the western isles. rain pushing through belfast. by isles. rain pushing through belfast. by the time we get to 4pm, you can see the clouds increasing across the la ke see the clouds increasing across the lake district, west and wales, into the tip of cornwall. but for the vast majority of england and wales it is in fact a dry