this is bbc news. i'm lewis vaughan jones. our top stories: tiktok says it's there for the long run, after president trump says he'll ban the chinese—owned video sharing app in the us. across europe several governments express concern about a resurgence in the number of coronavirus cases. a uk scientist advising the government on coronavirus says pubs and bars across the country might have to close if schools are to open. and pierre—emerick aubameyang scores twice as arsenal beat chelsea to win the fa cup. as arsenal beat chelsea to win the fa cup.

hello and welcome to bbc news. the us general manager of tiktok has said the chinese—owned video—sharing app is "here for the long run", after president donald trump said he would ban it in the us. vanessa pappas told tiktok users in a video statement that its staff were building the safest app amid us concerns about data protection. tiktok is mostly used to share short videos, usually about 15 seconds long. and it has grown rapidly in the last year, now boasting more than 800 million active monthly users worldwide. but it's owned by a chinese company, bytedance, and it's this last fact that concerns the us security forces. there is in fact a precedent for this us announcement — india has already blocked the app, and australia is also considering a ban. here's our technology reporter, chris fox. well, the app has been decompiled by security researchers.

they've looked deep into it, and as yet, they haven't found a smoking gun. there's nothing obvious in the app that seems to be sending information back to the chinese. but as with any chinese company, they can be compelled to give information to the chinese security services, and any app on your phone can gather lots of data while it's there. even american apps like facebook do this. they can scoop up your location data, your contacts and things like that. and they store that on servers outside of china, so tiktok is run as its own entity outside of china. they run it as a separate business. and they say they store the data outside of china, so it's not subject to chinese jurisdiction. but i think the fear is that with all that information about american and other consumers that they store on servers, could potentially that find its way back to the chinese security services and then put information at risk? that's the concern. tiktok has said it does not give any information to the chinese government.

tiktok itself isn't operated in china. they have a different version of the app called douyin. and they've said that they are planning to stay in america, in the us for the long run. they don't have any intention of closing down. there had been some rumours swirling that they might be bought out by another company like microsoft, but at the moment, that hasn't been confirmed. let's speak to dan primack, business editor at axios. you would not be able to do it. unlike china or iran, whether only one or two service providers, in the us it is very difficult to do that with so many telecom service providers. to be able to do that, there would be a lot of loopholes and in my opinion it would be close to impossible to successfully do that. from a security and privacy perspective, with tik tok and many other

applications, they are valid questions but how donald trump is going about doing it is pretty foolish in my opinion. several european governments have expressed concern about the resurgence of the coronavirus cases in a number of countries, including belgium and france, where numbers appear to be heading upwards. in france, the 7—day average of new infections passed 1,000 per day, this week. rates of infection in germany remain low, but health officials there have expressed great concern over an uptick in cases in the country. spain is struggling with a surge of new infections that has sparked european travel warnings. gavin lee is on the spanish island of mallorca. across spain, the authorities are worried about the speed and spread of the pathogen. an average of a thousand cases this week, ten times more than a month ago and across europe as well, if you look at france, double the number of cases

compared to last month and germany as well and if you look at the likes of italy, better news there because they have a slight increase but belgium, five times the number of cases compared to a month ago. in germany, as of next week, they will make it mandatory for travellers coming back from areas of high risk to have a covid—i9 test. that means spain but for the moment not for the uk. in the locker that have been fewer cases. —— mallorca. but i first confirmed case of a tourist in isolation since the lockdown was eased close by here now in isolation in a hotel. it is a worry but no big concern at the moment and reason for alarm. two of the uk government's scientific advisors have each warned that pubs and other leisure facilites may have to close once schools reopen in england next month, to prevent a sharp

rise in coronavirus cases. the experts say a possible trade—off may be needed so pupils can return to the classroom. here's our science correspondent victoria gill. a family celebration tinged with the impacts of the pandemic. while a downsized wedding went ahead in bradford, new restrictions here and across a swathe of northern england mean that friends and families in different households are once again being told to keep apart. it's a weekend of mixed messages. planned relaxation of lockdown restrictions in england has been put on pause, but outside of areas where restrictions have been tightened, people who've been shielding since march have been advised that it's finally safe to go out. for michelle in leicester, who's been treated for breast cancer, this meant an emotional reunion with her mum. the flowers are in the back of the car, you can just about see them. i'm only coming for the day. i'm not staying overnight, so i'm taking no extra risks. i'm just coming to see my mum.

now, then, pixie! oh, yeah, look at that. whoo! yeah, we got it! we made it! i know! i've got a present for you. oh, wow! but it's a nervous time for both of them. they're beautiful! i'm not right sure whether shielding is over, because in a holiday town like we are, we get too many visitors to feel safe. the recent rise in infection rates linked to people in different households socialising together showed how close some communities are to a surge in coronavirus cases. while new restrictions in some areas are intended to pull them back from that tipping point, two of the government's scientific advisers, speaking to the bbc in an independent capacity, said that to fulfil the ambition to reopen schools, pubs and restaurants may once again have to close. closing some of the other networks, some of the other activities, may well be required to enable us to open schools. so, it might come down

to a question about, you know, which do you trade off against each other? and then that's a matter of prioritising, you know, do we think that pubs are more important than schools? so, what do you envisage will have to happen with restrictions later in the year? well, we'll probably start to see a second wave. we'll also see the usual seasonal influenza starting. i think some hard decisions will be made about what restrictions need to be reintroduced and whether that's potentially the pubs and the hospitality sector taking a hit, in preference to education, but it will be a political decision. until there's a vaccine, even on the most special of occasions, this balancing act will have to continue. trying to keep life going while keeping the virus at bay. victoria gill, bbc news. robert west says england needs a reset on it pandemic strategy. we have seen in

different countries in europe in different parts of the united kingdom, different strategies lead to different outcomes and if you compare what the strategy appears to be in england versus scotland, then you do see a difference and it will make a difference so scotland is essentially going for covid—i9 zero, that is not absolute zero but what it does mean is you do everything you can in the short term to drive the infection rate down so that when you do get outbreaks, you can stamp on them quickly with an effective trace an isolationist system but the keys to get it at such rate that people and businesses can open things up. with reasonable confidence, that they are not going to be closed down again. what we have the moment, unfortunately, in england, is sort of a gogo strategy, but the problem is

the famous our value, it does not take much fruit to go above that and to go into these more extremely lockdown conditions or restrictions. —— r—rate. it is awfulfor or restrictions. —— r—rate. it is awful for businesses. they are expected to open up and then they finally cannot or they have opened up and they are now thinking they have to close down again. russian health authorities are starting a campaign in october. some experts are concerned the fast track approach on friday the leading infectious disease expert in america saying you need to test vaccines before

administering them to anyone. we now talk to an expert working on a coronavirus vaccine. what do you make of this announcement by russia that they hope to be administering it by october? well, it is pretty extraordinary for a number of reasons. first of all, the technical achievement of making a coronavirus vaccine for covid—i9 is not that high a bar, there are many ways to do it. it is an old school prom and in virology to get something that induces high levels of virus neutralising antibodies. by now you would see the cartoon of the virus with the spikes hanging out, attaching to the host tissue. it could potentially get a good vaccine as well as simulating other bits of the immune system. there are many ways to

do it. we're doing it through and engineer protein. there are several ways to do it. the problem is these, it is not so much making the vaccine, it is ensuring there is adequate quality control so you know what you are making you can make it the same way every time and that you adequately tested in last scale clinical trials to know the vaccine actually works and they are safe and are not causing a significant level of severe reactions. but what worries me when the russians announced they are suddenly going to make a vaccine and haveit going to make a vaccine and have it by october. i am not so worried they can make a vaccine whether it is safe and works and, if there are problems and it causes a significant safety signal across the population, that discredits other vaccines and that is when you start getting measles outbreaks and everything. those knock-on

effects of it not working damaging public confidence. where are we more widely, leaving russia aside for a second. the timescale of this. people are saying originally definitely not until 2021. where are we on the different efforts ? where are we on the different efforts? there are differing opinions. in the us, i tend to be on the conservative side, saying the third quarter of 2021 and i say that because large scale phase three clinical trials are only happening now. there will be others through the rest of the year but it should take about a year but it should take about a year to collect enough data on 30,000 volunteers showing that it works and it is safe. i put it works and it is safe. i put it in the middle, towards the end of 2021 and even that would bea end of 2021 and even that would be a world record. 0thers end of 2021 and even that would be a world record. others are saying it should be ready earlier to be released to the

public. it really depends on how good vaccine it is. it could be a vaccine that partially protects, reduces the severity of symptoms, which is still impossible because it prevents hospitalisation as other vaccines could potentially create herd immunity. that is important because something sensible replace existing public—health control measures and others will be used as companion technology alongside it. you can already see, it gets quite complex and you need a lot of carefully crafted public—health messaging which unfortunately is not coming out of the white house which is an additional hurdle we are facing. thank you very much for speaking to us. thank you. for more detail on whether the world is under the race for a coronavirus vaccine, have a look at an article by our health corresponded on our website. you can always

download the bbc news app as well. you are watching bbc news. the headlines: tik tok says it's ‘there for the long run' after president trump says he'll ban the chinese—owned video sharing app in the us. across europe, several governments express concern about a resurgence in the number of coronavirus cases. classified documents from inside the british military raise fresh questions as to whether uk special forces in afghanistan may have tried to cover up the killing of civilians. the previously secret material was disclosed as part of a court case following a panorama investigation last year, which highlighed allegations that british forces had a policy of deliberately killing fighting—aged males — even when they didn't pose a threat. the ministry of defence has denied such a policy existed. 0ur defence correspondent jonathan beale reports. this is how elite troops target the taliban —

controversial night raids with the aim to kill or capture enemy fighters. this shows afghan commandos on a mission with american support. but it was the same tactics used by british special forces during their time in helmand. last year, bbc panorama heard allegations the sas had killed unarmed civilians, with testimony from survivors of a raid in 2011 who said the british shot family members when they posed no threat. we've blurred their faces to protect their identity. translation: they tied his hands in front of me. if you've tied someone's hands, how can they fight? lawyers representing one of the afghan families are now challenging the ministry of defence here at the high court. they're trying to find out whether there was a proper investigation or whether there might

have been a cover—up. and they've just forced the mod to release these highly sensitive documents, which show that there were serious concerns about the raid within the british military. in heavily redacted e—mails sent soon after the raid, one british officer asks... another soldier replies with reports that two of the afghans were shot reaching for weapons. he says... while another e—mail highlights the anger of an afghan officer, who suggests... 0ne mp says the documents warrant a fresh investigation. it's deeply alarming, it's deeply serious and the government needs to come clean. if that doesn't merit some kind of inquiry, because at the end of the day, you're talking about war crimes, potential war crimes,

then i don't know what does. the british military‘s own report into the raid, released to the court, says the four men killed were all armed and that one was a known taliban commander who'd been targeting coalition forces. in a statement, the mod said... the mod recently closed down the unit investigating allegations of potential war crimes in afghanistan. but these documents, at the very least, highlight concerns about its transparency and the secrecy surrounding britain's special forces. jonathan beale, bbc news. a former british government minister and current conservative mp is reported to have been arrested after he was accused of rape, sexual assault and coercive control. scotland yard say a man was taken into custody

at a police station in east london on saturday and has been released on bail. the conservative party said it takes all allegations of this nature extremely seriously. the allegations against the conservative mp appear in the sunday times newspaper. sri lankans are heading to the polls on wednesday in an election that will have far—ranging impacts on sri lanka's politics, rule of law, and foreign policy. so with sunday marking the last day of campaigning — our correspondent anbarasan ethirajan takes a look at what we can expect. music. a buoyant sri lankan president, gota baya raja pa ksa, is on a campaign trail once again. almost nine months after his landslide victory in the presidential poll, he wants to sweep the parliamentary election. mr rajapaksa wants this man, his brother mahinda, to be his prime minister. mahinda was president twice before, and gotabaya

was his defence secretary. the election is happening amid the unprecedented coronavirus crisis. sri lanka has managed to contain the outbreak, with the deaths onlyjust into double figures. the entire world is now subject to covid—19 infection. sri lanka is one of the best countries to face it successfully and to save its own citizens. the president, gota baya raja pa ksa, has shown he's a unique leader, and because of that, people have a new hope. however, the rajapaksa brothers still face accusations of rights abuses during the war with the tamil rebels which ended in 2009. they deny any wrongdoing, but the rajapaksas' supporters, mostly drawn from the majority sinhalese, dismiss the criticism over rights abuses. sri lanka has enjoyed a relative political stability for the last nine months, especially after the devastating easter sunday

bomb attacks last year. president gotabaya raja pa ksa's party wants to capitalise on that to secure a two—thirds majority in parliament so that they can change the constitution. for example, to give more powers to the president. this man, sajith premadasa, is one of the main challengers. he's promising a more inclusive sri lanka. but the opposition is divided, splitting anti—rajapa ksa votes. some are worried that a two—thirds majority in the current election could lead to an authoritarian rule. this comes at a time where we have seen increasing attacks on civil society, on media, on lawyers. so, the space for dissent is shrinking. and the question is whether it will shrink further post—elections? and the signs so far are that it is likely to happen that way. sri lanka's economy has been

battered by the covid—19 crisis. many sri lankans feel only a strong government will be able to revive the economy. anbarasan ethirajan, bbc news. in cuba, the collapse in tourism from covid—19 and tighter us sanctions mean the government's running out of hard currency. so it's allowing more shops to sell goods in us dollars. here's will grant. lining up to spend their hard earned dollars. many had been in the tightly—controlled queues from before dawn, face masks on and sheltering from cuba's sun and rain. we weren't allowed to film inside the dollar stores, but customers later emerged with whatever they could carry. the shelves stocked with hard—to—find items — meat, dairy, cleaning products, soap and shower gel. "i'd buy more, but i need to deposit more dollars into my bank account," said this shopper, leno. "i can afford

to come about once a month," added benito. both of them hopeful the measure will generate the foreign currency the government needs to import more. cuba has a big problem — it imports around 80% of what it consumes. as the coronavirus lockdown has meant almost no tourism this year, that's less hard currency with which to import much needed goods. during the cold war, it was fidel castro's wish to see cuba completely self—sufficient in terms of food production. today, things have improved in that regard. however, the island remains largely dependent on imports and particularly vulnerable at times of crisis. vista hermosa is a privately—run organic farm outside havana which supplies the state with milk and cattle and privately sells vegetables, fruit, cheese and pork. its head agronomist says cuba can do more to break its reliance

on food from abroad. translation: i think imports will always be present in cuba. but we can reduce just how much we bring in by cultivating the land better, by working to improve our techniques and our science, and by using far better technology. to complicate matters, the trump administration has breathed new life into the us economic embargo on cuba. so, to help tackle the coronavirus pandemic, the island has produced 500 of its own ventilators with money from the european union. covid is a gigantic problem for any country. but for a country which is under a blockade and has so many difficulties acquiring equipment, the problem we feared could've been worse. dollarisation is a dirty word for the cuban government, but it is now happening on the island. the dollar stores have made more products available for now, but also further divide cubans

into those who have access to the currency and those who don't. will grant, bbc news, havana. in sport, arsenal have won the fa cup finalfor a record 14th time, beating chelsea 2—1 at wembley. arsenal's captain pierre—emerick aubameyang, who scored both his team's goals, lifted the trophy in front of a stadium of 90,000 empty seats, because of coronavirus restrictions. victory secured arsenal's place in the europa league next season. the team's manager mikel arteta says that's an additional bonus for the club. it isa it is a double reward for us. it is a double reward for us. it is a double reward for us. it is really important for this clu b it is really important for this club in every way to be in europe. we have gone into this competition and winning it as pa rt competition and winning it as part of our history, 1a now, i contributed, we all did it so i am so happy. you can reach me on twitter —

i'm @lvaughanjones. hello there. the heat and humidity ebbed away during the course of saturday and resulted in a much more comfortable night for sleeping. but again, as we know, on friday, we were just shy of 38 celsius. we had our third hottest day on record. just to show you the contrast, just about everywhere was ten this degrees down on that on saturday. so, it felt a little cooler, but it most certainly felt less humid, so more comfortable for sleeping — and we'll keep that fresher feel around for the day ahead — but there will be scattered showers around. we're under the atlantic influence again. low pressure to the north throwing in this weather front, which has given some fairly heavy rain across the northern half of the country through the night. still around, i think, first thing, but look at those temperatures. a much cooler start to the day for many.

and what we have in the north, that cloud and rain, will tend to break up, but given we've got that moisture, that will be the spark, if you like, for some heavier showers as we go into the afternoon. now, we're not expecting that many showers across the southern half of england, across wales and the midlands and east anglia, but they can't be ruled out. and temperatures will be a few degrees down on saturdayjust because it will be a cooler start to the day. still a fairly fresh breeze through the channel. after fairly few showers in the morning across northern ireland, they will tend to become more frequent into the afternoon, and there'll be some sharp ones further north as well — but equally, some spells of sunshine in between. and, of course, it's the british grand prix race day and it does look as if she will be mostly dry. there's just that small chance of a shower. just a small chance. and through the evening and overnight, those showers will tend to ease away, as you can see, with the risk still of a bit of rain brushing close by to the south. but another fairly fresh night for most parts. as we go, then, into monday, we've got a slight ridge of high pressure building in, but it is only slight and i still think there will be

the odd shower around. and already looming large in the atlantic, the next low pressure system. so, if we do see some of that rain, it willjust be brushing southern counties, we think. then, we may well have some slow—moving, sharp showers into the afternoon, but feeling quite pleasant in the sunshine with the light winds in between. however, as we go into tuesday, we've got the atlantic low potentially coming in, bringing us some more significant and persistent, quite widespread rain to the north and the west. it will tend to peter out, we think, as it heads southwards and eastwards, but a fair breeze with that as well and some significant rain. that's certainly one to watch. as ever, you can find out more information from our website.

this is bbc news, the headlines: president trump says he'll ban tiktok, the chinese—owned video sharing app, in the us. it comes amid concerns the app could be used to collect americans' personal data. tik tok denies any chinese control and says that it is in the us "for the long run". a scientist advising the uk has warned the country was "near the limit" of opening up — and suggested pubs may have to close so that schools can reopen next month to avoid a surge in coronavirus cases. several european governments have expressed concern about the resurgence of coronavirus cases in a number of countries, including belgium and france where numbers appear to be heading upwards. spain in particular is struggling with a surge of new infections that has sparked european travel