this is bbc news. i'm ben bland. our top stories: a broadside from barack obama, as he calls for the restoration of honesty and decency in us government. but president trump hits back. what did you think of president obama's speech? and i said, i'm sorry, i watched obama's speech? and i said, i'm sorry, iwatched it, buti obama's speech? and i said, i'm sorry, iwatched it, but i fell asleep. after a week of fighting in the libyan capital, a fragile ceasefire appears to be holding. we have a special report. british airways apologises for a data breach affecting thousands of customers and says it's 100% committed to compensating them. and cleaning up our oceans. the first attempt to remove decades of plastic pollution starts in the pacific. barack obama has accused president trump's republican party

of abusing power, dividing america and threatening democracy. in his first major speech of the us mid—term election season, the former president said americans were living in "dangerous times." he urged voters to come out in force to support democratic candidates in november. nick bryant reports. cheering this was barack obama returning to political centre stage. using what has always been the strongest weapon in his armoury — the power of speech. and deploying it against donald trump. hello, illinois. and he addressed this week's explosive revelations that trump appointees are working secretly to subvert the president. you are not doing us a service by actively promoting 90% of the crazy stuff coming out of this white house and then saying, "don't worry — we're preventing the other io%." that's not how things are supposed to work. this is not normal. these are extraordinary times.

and they're dangerous times. these were his strongest criticisms yet of the man who succeeded him and he was scathing about donald trump's response to events last year in charlottesville, the clashes involving white supremacists and neo—nazis. we're supposed to stand up to discrimination. and we're sure as heck supposed to stand up clearly and unequivocally to nazi sympathisers. how hard can that be? saying that nazis are bad? laughter # where at least i know i'm free... donald trump is a counter puncher and just over an hour later, buoyed by strong newjobs figures, he described his reaction to being asked about his predecessor's criticisms. he said, "what do you think of president obama's speech?" and i said, "i'm sorry, i watched it but i fell asleep." laughter

i found he's very good, very good for sleeping. laughter these first seven days in september, which started with a memorial service forjohn mccain, feel like a milestone moment, when the forces of resistance to the trump presidency have asserted themselves more strongly. much of that service was a rebuke to the president, and then came the blockbuster new book from bob woodward and the highly critical column in the new york times, penned anonymously by an administration official. it's unprecedented in modern times to see this kind of public clash between a sitting president and his predecessor. and it speaks to how this divided country increasingly looks like two americas — one that rallies round donald trump, and one that seeks to resist him. nick bryant, bbc news, washington.

the first former member of donald trump's election team thousands of people have been forced to leave their homes after more than a week of fierce fighting between rivalfactions in libya. but now a fragile ceasefire, brokered by the un, appears to be holding. seven years ago, rebel groups backed by a military coalition toppled the dictator, muammar gaddafi. since then, there has been political and military chaos. the bbc has the only international news team there. clive myrie sent this report. we're entering a nervous city. only now after a week of fighting and three ceasefires do we think it's safe to enter tripoli. along this same road seven days ago, fighters from armed groups based outside the capital breached the city walls. but rival factions inside tripoli were ready for the fight. the battles left scores dead, including civilians, and forced thousands to flee their homes. darkness provided no respite.

the battles are over for now, but the scars linger. at his family compound, ali el—amari doted on two grandchildren who are now dead. translation: the rocket or missile landed right where the children were playing. there was blood everywhere. on the ground, all over the trees. when you see the body of your grandchild in pieces... my daughter had to see it too. i am very, very sad. i am very sad. ten years. why are we still all fighting?

why? one boy was 14 and the other 15. they were buried one week ago today. libya's problems, the deaths, the destruction, are the result of the messy end of colonel gaddafi's rule. the armed groups that helped topple him carved up the country, leaving no—one in overall control. and the militias and groups that stayed within the capital are being accused of being greedy, of siphoning off funds, of ruining the economy. those groups outside the capital now say they had to intervene. there is a un—backed government in tripoli, but it's accused of allowing the armed factions in the capital to act with impunity. with so many militias and fighting groups seemingly running

the country, libya is a failed state. and seizing on that failure have been the people smugglers. the fighting of recent days has ensnared many of the thousands of migrants who are trying to use libya as a gateway to europe across the mediterranean. these people had to break out of a detention centre when the fighting got too close. this man says there was gunfire at night and five people were hit, that's why we escaped, but even as we tried to run, another man was shot. the fighting forced thousands of libyans to free their homes, children to leave their schools. this woman is a mother of four. she said she wanted to talk to us, and she poured out her heart. "we are tired, we've had enough," she told me. "we had to leave our homes. "i would like to send a message to the world,

"we are peaceful people. "we want to live like everybody else, our children "to grow up in peace. "why is this happening, why?" libyans are tired of the men with guns having all the influence. and hopes for nationwide elections by the end of the year are now in ruins. once again, an attempt to stitch together this fractured nation has come to nothing. clive myrie reporting. and you can find out more about the situation in libya, including the ceasefire between the various militia groups vying for control there, on our website. british airways could be fined as much as $650 million for a huge data breach. hackers managed to access details of 380,000 bookings made with the airline over a 2—week period. ba say personal and financial details were compromised, and many passengers have been forced to cancel their credit and debit cards. emma simpson reports. it's all about the customers.

business travellers and holiday—makers, transporting them around the world. but thousands have had their personal information stolen after british airways was hacked. jorge herrera is one of them. he booked tickets with a credit card at the end of august, but has other cards on his ba account, too. he's struggled to speak to the airline all day. i don't think i have to cancel all my credit cards, but i don't know. and so i'm in the process of doing that. and it's going to take a long time. so, what do we know about this data breach? well, it affected customers who made a booking or changed one through the british airways website or ba app from 11pm on august 21 up until 9:16 on wednesday evening. 380,000 cards were affected. ba says hackers stole names, addresses, e—mailaddresses and payment information. that included the card number, expiry date and, critically, the three digit security code on the back. i'm not letting you see my three digit number, because it's a bit like giving you the keys to my safe.

now, with an online transaction, this number shouldn't be stored. ba says they weren't. so how did hackers get hold of them? emily here is a cyber—security expert. what could have happened? well, one theory is that a supplier to ba actually got compromised in the first place. so when you are booking a flight on the website, you may not realise, but there is lots of third—party software that is used within those web pages to do things like process card information. so it could be that they were targeted because they were a little weaker on security, and then used to extract the data. ba says it's sorry, promising

compensation for any customers who may end up out of pocket. this was a very sophisticated criminal attack on ba.com, and over more than 20 years that ba.com has been operating, we've never had a breach of that type. this attack doesn't surprise me. we see attacks like this targeting payment and card details all the time. but this is a big industry, and criminals do do this on a daily basis. but it is unusual for hackers to land so much sensitive payment card details at once. it's the first major incident since new data protection rules came into effect, which means ba could face a sky—high fine of around half a billion pounds for the breach. the us rapper mac miller has been found dead at his home in los angeles after an apparent drug overdose. the 26—year—old, who's real name is malcolm mccormick, previously dated pop singer ariana grande. he shared the stage with her

at the one love for manchester concert last year. the pair split earlier this year amid miller's continuing battle with substance abuse. fans and fellow musicians have been paying tribute to the rapper on social media, he had just released a new album and was set to start touring later this month. in brazil, the man widely tipped to be the country's next president is recovering in hospital after being stabbed at a campaign rally. jair bolsonaro was attacked while he was moving among a crowd in the south—eastern state of minais gerais. he's a controversial candidate, even by brazilian standards, as katy watson reports. on the campaign trail, jair bolsonaro was in his element. supported by seemingly adoring fans. but the celebrations came to an abrupt end. stabbed in the abdomen and visibly in pain. within moments, supporters surrounded a suspect, adelio bispo de oliveira. he was later arrested. as chaos ensued, the politician was rushed to hospital.

after several hours of surgery, mr bolsonaro remained undeterred, speaking to his supporters on social media. his son, who has been with him throughout, spoke of his relief. translation: he has got more colour, he is better, he is recovering really well. the doctor said that if he wasn't in such good shape, he would likely be dead because he lost something like two litres of blood. had he arrived here five minutes later, the haemorrhage would have probably caused cardiac arrest and he probably would be dead. jair bolsonaro has now been moved to a hospital in sao paulo where he is expected to remain for at least a week. few believe this will impact his presidential campaign, it may even strengthen it. nicknamed's brazil's trump, bolsonaro has become notorious for his homophobic, sexist and racist comments. but his promises to tackle violent crime and put an end to corruption have won him millions of supporters.

they are rallying around their injured candidate. he has polarised opinion here in brazil, but even his biggest political foes condemn the attack. translation: this cannot happen. a democratic country which respects itself that wants to be democratic cannot allow the stabbing of any presidential candidate. today, the politics didn't stop. the mood, though, was a little different. it is independence day here in brazil. with elections around the corner, people are out campaigning. one of bolsonaro's biggest rivals is expected to turn up today, but all of the main presidential candidates have cancelled their events out of respect for the politician. next month's presidential elections in brazil are the most uncertain in decades. what is certain, though, is that this image and the fear of more political violence will mark this turbulent campaign to the very end. katie watson, bbc news, sao paulo. stay with us on bbc news,

still to come: shares in tesla go up in smoke after another controversial moment from co—founder elon musk. freedom itself was attacked this morning, and freedom will be defended. the united states will hunt down and punish those responsible. bishop tutu now becomes the spiritual leader of 100,000 anglicans here, of the blacks in soweto township as well as the whites in their rich suburbs. we say to you today, in a loud and a clear voice, enough of blood and tears. enough! translation: the difficult decision we reached together was one that required great and exceptional courage. it's an exodus of up to 60,000 people, caused by the uneven pace

of political change in eastern europe. iam free! this is bbc news. the latest headlines: former president barack obama's called for the restoration of honesty and decency in the us government in an outspoken attack on his successor. after a week of fighting in the libyan capital — a fragile ceasefire appears to be holding. donald trump is threatening to instensify his trade war with china. the us president warned he could ‘move soon‘ to impose tariffs on $200 billion worth of products and that taxes on another $260 billion might also be ready to go ‘at short notice'. our business correspondent kim gittleson has more from new york. for those hoping that trade tensions

between the world's two biggest economies might fade along with the summer economies might fade along with the summer heat, these latest threats made by president donald trump to reporters on air force one suggests that when it comes to this particular trade war, well, it is not going to be ending any time soon. president donald trump is now threatening to tax the totality of chinese imports into the united states this year. that could raise the price of everything from apple's iphones to clothing. it poses a conundrum to chinese officials. so far the chinese have responded to america's tariff threats by taxing a similaramount of us america's tariff threats by taxing a similar amount of us imports into china. now there simply aren't enough goods to tax in kind. however, it seems that so far investors don't believe that these threats have merit, with us markets ending only slightly lower. that is

partially because good economic data came out this week that suggests us wages grew at their fastest rate in nearly a decade. and it is this positive economic news that is key. because it gives president trump cover he needs in his attempt to rewrite the rules of global trade. kim gittleson reporting from new york. the first former member of donald trump's election team has been jailed donald trump's election team has beenjailed for 14 donald trump's election team has been jailed for 14 days. george papadopoulos, who been jailed for 14 days. george pa padopoulos, who admitted been jailed for 14 days. george papadopoulos, who admitted to lying to federal agents investigating whether campaign aides collude with russia will do 200 hours of community service and pay a fine of $9,500. there was a professor who said he had dirt on hillary clinton. president trump denies campaign collusion with moscow. shares in tesla have plummeted more than 9% after these pictures emerged of its co—founder elon musk. they show him appearing to smoke cannabis while he was on thejoe rogan live podcast.

since the show was posted online tesla's chief accounting officer resigned after just one month in thejob. and there are now also reports that the head of tesla's human resources department has also quit. earlier, i spoke to dr ellen wald, who has written about mr musk and tesla's troubles for forbes magazine. i asked her how important mr musk is for tesla. elon musk has become, essentially, synonymous with the rise and fall of tesla stock price. when he comes out and makes a statement saying we have got positive production numbers, the stock goes up. when he is involved in something like this podcast and this show, or he gave an interview to the new york times where they wrote about his troubled emotional state, the stock tumbles. it really seems like tesla is rising and falling along with its ceo and founder. we have the extraordinary

situation with hasluck has a higher market capitalisation, the total value of all its shares is greater than ford, an established conventional car firm, and yet this is all on the assurances, vision, and promises, really, of elon musk. how long will it be, do you think, before it starts to test investors because patients? i think we are seeing that starting right now. —— investors' patients. no matter how difficult is being seen to be for the company, the shareholders don't desert. recently we have been seeing that limit now, when elon musk declared suddenly on twitter that he had funding secured to take the company private but he hadn't spoken to the board members and that launched an enquiry into the company and now we are seeing him, it almost looks like he is unravelling before

the public‘s eye. the stock is definitely showing that now that they have high—profile resignations. it seems that the veneer has come of this very shiny company. this is one of the high profile tech firms. there are some people who think that we are in a tech bubble similar to the dot—com bubble of years ago, how important is tesla in the overall health of the tech market? if it share price continues falling, as it has today, what is the danger of a knock—on effect? has today, what is the danger of a knock-on effect? it is definitely possible that this could spread. i think tesla is almost unique in the way it has presented itself. it wa nts to way it has presented itself. it wants to be seen as a tech company yet it also wants to be seen as a traditional car maker, which it really is not. and when you compare it to really is not. and when you compare ittoa really is not. and when you compare it to a company like ford, the differences are very, very stark in terms of the revenue they make.

tesla has not turned a profit, really, and they see themselves as a tech company, but where it really is that value, is it in the tech or is it injust the that value, is it in the tech or is it in just the marketing? every year millions of tons of plastic waste flow into the sea around the world. now, for the first time, there's going to be an attempt to get into the middle of the pacific ocean — to try to clean it. our science editor david shukman explains. in san francisco, final construction of a massive project with an incredibly bold ambition. to try to clear the oceans of plastic waste. this animation shows how the huge structure is meant to collect millions of pieces of plastic to make them easier to get rid of. sights like this have shocked people around the world. images of the damage to wildlife have inspired this effort to clean up. if we don't do it now all this plastic will start breaking down into smaller and smaller pieces, and the smaller the pieces are the more harmful and harder to extract

from the marine environment. so we feel there is a sense of urgency. there is plastic waste in every ocean around the world but this is the first attempt to clean it up. it will take place in the eastern pacific in a rotating current that traps plastic, what's called the great garbage patch. it's bigger than britain and france combined. how is the project meant to work? a giant tube 600 metres long will float on the surface and bend into a shape like a horseshoe, drifting naturally with the current and the winds. because it will move faster than all the bits of plastic in the water it should slowly gather them together into a small area. underwater a kind of barrier will hang three metres down to trap plastic below the surface and the design should mean that any fish will pass under it. once the plastic has been drawn into a dense mass it will then be collected by ship, taken away to be recycled.

no—one can be sure if the huge system will work. some experts worry it could harm marine life. the major problem is those creatures that passively float in the ocean and cannot actually move out of the way. once they are in, they are going to be trapped there unable to move. for example plankton is the bottom of the food chain, so we really do not want to be taking that out of our oceans. that is clearly from the teeth of a fish. yes. there is no other explanation. one of the scientists on the clean—up project says because the plastic is being eaten by fish it is entering the food chain so should be removed. it's been there for years. we find plastic from the 70s, from the 80s, from the 90s. and then we also find languages on those bits of plastic so we will find in the north pacific chinese, japanese, english, so we will try to define where the things may have come from. the plan is to start with one collection device and eventually deploy 60 of them. but all the time plastic is pouring

down rivers into the oceans. so on its own the clean—up operation will never be enough. you can reach me on twitter — i'm @benmbland rider of our top story this hour barack obama rider of our top story this hour ba rack obama has rider of our top story this hour barack obama has launched an outspoken attack on donald trump and accuse the republican party of abusing power, dividing america, and threatening democracy. he urged democrats to vote in the mid—term elections. president trump hit back, saying the speech sent into speech. you can reach me on twitter — i'm @benmbland good morning. the weekend is upon

us. good morning. the weekend is upon us. many of us will see a little bit of rain at some stage in the weekend. that is by no means the whole story. there will be a lot of dry weather around as well and some spells of sunshine. quite a complex pressure pattern. high pressure to the south. one area of low pressure to the north—east. then there is a wriggling weather front pushing in from the atlantic. this is essentially going to send a pipeline of moisture in across central part of moisture in across central part of the uk. for wales, the midlands, northern england, we will seek outbreaks of rain through the day, the odd heavy burst. some of that rain dribbling down into east anglia. the further south you are more in the way of dry weather, some brightness and brighter skies to be had further north through saturday afternoon. extra cloud through north—east of scotland. get yourself into some sunshine. aberdeen i6, 17 in glasgow. a cool fresh feel,

similar story for northern ireland. northern england into wales and the midlands, outbreaks of rain at times, the odd heavy burst over the hills, particularly. it will be quite breezy. breezy further south as well. particular towards the channel islands you may see breaks in the cloud and a little bit of sunshine. remember that pipeline of moisture, it filed its way in as we go through saturday night into sunday. at this stage the rain will drift further north as well, perhaps getting into southern scotland. cool in north—east scotland, further south with a fair amount of cloud it will be mild. at rates of rain across western and some northern parts of the uk. there could be patchy rain and drizzle around through the morning, close to newcastle, as the great north run gets under way. as we go on through the day i am hopeful the cloud will start to break up. we will see spells of sunshine developing into the afternoon. temperatures around 16 or 17. it will be fairly breezy. across the rest of the country, a

similar story. rain will drift across many northern parts of england, northern ireland, scotland. the rain continues across northern scotla nd the rain continues across northern scotland through the day. some thundery showers later on. increasingly windy. further south, more sunshine towards the south east and some slightly higher temperatures as well. moving out of sunday and into monday, high pressure still influencing the weather in the south. more frontal systems in towards the north—west. it will be northern and western parts of the uk that will see outbreaks of rain, often breezy conditions. further south, outbreaks of rain, often breezy conditions. furthersouth, more in the way of dry weather. sunshine. and it will start to dry up as well. this is bbc news, the headlines: barack obama has launched an outspoken attack on donald trump and accused the republican party of abusing power, dividing america and threatening democracy. he also urged democrats to vote in the november's mid—term elections. president trump hit back, saying the speech sent him to sleep. a fragile ceasefire seems to be holding in the libyan capital, tripoli, following a week of clashes

between rival militia factions. the un says at least 47 people have been killed and 1,800 families internally displaced by the violence. british airways could be fined as much as $650 million dollars for a huge data breach. hackers managed to access details of 380 thousand bookings made with the airline over a two week period. the compa ny‘s apologised and said it's100% committed to compensating customers. now on bbc news, it's time for disclosure. the first in a new investigative series asks, who's checking your