welcome to bbc news. our top stories: president biden calls new sanctions on russia a proportionate and measured response to alleged russian interference in us elections and cyberattacks. the former minneapolis police officer derek chauvin invokes his constitutional right not to testify, on the final day of evidence at his trial. you understand that you have a fifth amendment privilege to remain silent? yes. police in chicago are on high alert — after the release of body—cam, video footage showing an officer shooting and killing a 13—year—old boy in an alley. buckingham palace sets out the plans for prince philip's funeral — including the list of those who'll attend the service.

overnight, our lives are put on pause. and david attenborough on what the global lockdown has taught us about humans and our affect on nature. welcome to our viewers on pbs in america and around the globe. president biden has said that the new round of us sanctions imposed on moscow is a proportionate and measured response to alleged russian interference in us elections and cyberattacks. russia has responded angrily to the new measures, summoning the us ambassador and warning that they deal a serious blow to mutual relations. mr biden said he could have gone further, but chose not to, saying any escalation

of tensions was in neither country's interests. i was clear with president putin that we could have gone further. but i chose not to do so. i chose to be proportionate. the united states is not looking to kick off a cycle of escalation and conflict with russia. we want a stable, predictable relationship. if russia continues to interfere with our democracy, i'm prepared to take further actions to respond. let's speak to michael kimmage who's a professor at the catholic university of america who served in the state department as a policy planner between 2014 and 2016, working on the russia and ukraine portfolio. with reminders what these sanctions entail, do they target and who will have much impact. target and who will have much im act. ., ., impact. the target government enti is impact. the target government entity is connected _ impact. the target government entity is connected to - impact. the target government entity is connected to the - entity is connected to the meddling in 2016 and 2020 and i don't think the medium term economic impact will be

especially profound but the symbolic impact is already quite considerable.- symbolic impact is already quite considerable. we've seen tit-for-tat_ quite considerable. we've seen tit-for-tat sanctions _ tit—for—tat sanctions previously. what is russia's response likely to be to these? i think it's very difficult to predict. russia doesn't have equivalent economic tools that it can use against the us or the west, it's amassed on the ukrainian and military border in that fashion but i think that there will be a response that there will be a response that registers, signals russian�*s activism. that registers, signals russian's activism. president biden said — russian's activism. president biden said he didn't - russian's activism. president biden said he didn't want - biden said he didn't want things to escalate but he opposed these sanctions regardless. do you think they will continue to be an escalation? i will continue to be an escalation?— will continue to be an escalation? ~ �* , escalation? i think it's quite likel . i escalation? i think it's quite likely. ithink— escalation? i think it's quite likely. i think the _ escalation? i think it's quite likely. i think the largest. likely. i think the largest problem for both presidents biden and putin is that there are no rules, rules of engagement, but especially in the case of the cyber domain. but it's a case in other domains as well. it's a case of

both leaders riding the tiger and it will be very difficult for them to manage the ensuing and increasing competition and conflict between the two countries.— conflict between the two countries. , �* ., , countries. president biden has said he wanted to _ countries. president biden has said he wanted to improve - said he wanted to improve america's global standing. how do these sanctions play into that? i do these sanctions play into that? 4' , , ., that? i think they show decisiveness _ that? i think they show decisiveness and - that? i think they show decisiveness and to - that? i think they show decisiveness and to be | that? i think they show - decisiveness and to be sure, the problems that resident biden has defined a very real and president trump was reluctant to take action so thatis reluctant to take action so that is a necessary positive step. it's going to be very difficult. this is not the conflict that president biden wants to spend four years dealing with. his priorities are clearly domestic and recovering from the pandemic on the cheap foreign policy challenge of the united states is china, not russia. biden has the risk of becoming a difficult distraction with these other objectives. these other ob'ectives. what about these other ob'ectives. what abom— these other objectives. what about the potential - these other objectives. what about the potential impact . these other objectives. what about the potential impact from the wider region, belarus and

ukraine? �* , ., ukraine? it's not their intention, _ ukraine? it's not their intention, the - ukraine? it's not their intention, the ways i ukraine? it's not their intention, the ways in | ukraine? it's not their - intention, the ways in which russia will respond. it's going to add to regional instability, and ongoing military conflict in ukraine. great political uncertainty in belarus, there will be other outside actors in the coming conflict. ukraine and belarus, other countries, and belarus, other countries, and that is going to make the instability that much more difficult to manage.- instability that much more difficult to manage. thank you very much _ difficult to manage. thank you very much for— difficult to manage. thank you very much for making - difficult to manage. thank you very much for making the - difficult to manage. thank you | very much for making the time for us. the former police officer charged with the murder of george floyd in minneapolis has invoked his constitutional right not to take the stand, on the final day of evidence at his trial. derek chauvin said he would use his right to refuse to answer questions which could incriminate him. he denies killing mr floyd by kneeling on his neck. 0ur correspondent, barbara plett usher has this report from minneapolis.

this was the first time in nearly three weeks of evidence that derek chauvin spoke in the courtroom. up to the last minute, there was speculation about whether he would testify. have you made a decision today whether you intend to testify or whether you intend to invoke your fifth amendment privilege? i will invoke my fifth amendment privilege today. the decision whether or not to testify... i let me take this off. ..is entirely yours. is this your decision not to testify? - it is, your honour. all right. the defence argued that his knee was not the main cause of george floyd's death. but it would have opened him up to cross—examination by the prosecution, and he decided that the risk was too great. just a few miles away, another former police officer, kim potter, appeared in court — charged with manslaughter for shooting a young black man at the weekend.

that sparked an explosion of anger in a city already on edge. protests that followed george floyd's death led to widespread looting and arson. the city is fortifying itself for the verdict. barbara plett usher, bbc news, minneapolis. newly released footage from police body cameras appears to show that a 13—year—old boy shot dead in the us city of chicago last month was not armed at the moment police opened fire. adam toledo appeared to have his hands raised when he was shot in the early hours of march 29th. the video shows a police officer running after the teenager in a neighbourhood on the city's west side. the policeman orders him to stop and show his hands, but when the boy complies, he is shot in the chest. police says the boy was holding a gun, but the family attorney says he was not holding it at the moment he was shot. those videos speak for themselves. adam, during his last second of life, did not have a gun in his hand. the officer screamed at him,

"show me your hands." adam complied, turned around. his hands were empty when he was shot in the chest, at the hands of the officer. this is the reaction from the mayor of chicago, lori lightfoot. even as our understanding of this incident continues to evolve, this remains a complicated and nuanced story, and will must proceed with deep empathy and calm. and importantly, peace. patrick smith is a criminaljustice reporter with wbez. he's in chicago now. talk us through this latest incident, what exactly happened? police responded to the little village neighbourhood here in chicago, with reports of shots being fired. it shows the police

officer chasing the 13—year—old, adam toledo, prosecutor saying that a gun was handed to him, and you can see it, you can see and hear the officer telling the boy to stop and after a brief chase, he does stop, as he is directed, and then there is a freeze—frame shared by the police department which shows him with a gun in his hand, behind his back, but the officer tells him to show his hands, raised his hands and he raises his hands up and as you heard the attorney say, it does not appear there is a gun in his hand but his hands are being raised above his head. there have been appeals for calm. what is the mood like at the moment? what i heard is, just a lot of horror, people

who are so upset by this tragic event. there is a small but vocal group now, my understanding is there is a much larger demonstration planned for tomorrow evening and there are preparations being made here with businesses boarding up their windows, and an extra police presence out on the streets, before any sort of major response to this video. this happened a couple of weeks ago, the video was released through public pressure, not by a court order as often has to be done. is that right. that's absolutely right. initially after the shooting, we found out there was a 13—year—old boy who was killed, there was a lot of interest in this video being released. initially the city said they weren't going to release it, they could release it because the person was a juvenile, the reverse that, and there has been this waiting period they said because they

were waiting for the family to view the videos before the public good. view the videos before the public good-— public good. the family watch the videos — public good. the family watch the videos on _ public good. the family watch the videos on tuesday, - public good. the family watch the videos on tuesday, and i public good. the family watch i the videos on tuesday, and then here we have to days later, the video released publicly. what video released publicly. what has happened _ video released publicly. what has happened to _ video released publicly. what has happened to the - video released publicly. what has happened to the officer. has happened to the officer involved? has anyone been charged? is currently on administrative duty which is routine after shooting here. i spoke with his attorney a bit ago. he doesn't think there is any reason there will be criminal charges. but some might feel differently. thank you very much forjoining us. brazil's supreme court has annulled the corruption convictions of the left—wing former president, luiz inacio lula da silva. the ruling paves the way for lula to run for the presidency again in next year's election, challenging the far—right incumbent, jair bolsanaro. the 75—year—old former president was jailed in 2018 on charges of taking bribes from companies looking for lucative contracts at brazil's state oil giant petrobras.

the us secretary of state anthony blinken has visited afghanistan to reassure leaders there of america's ongoing commitment to the country, coming a day after president biden confirmed the withdrawal of all remaining us troops in afghanistan by september 11. mr blinken said the us would do everything it could to pursue peace. stay with us on bbc news. still to come: paint supplier blinken is accused of a whitewash after removing a series of social media posts mocking one of its clients, tottenham hotspur football club. pol pot, one of the century's greatest mass murderers, has reported to have died of natural causes.

he and the khmer rouge movement he led were responsible for the deaths of an estimated 1.7 million cambodians. there have been violent protests in indonesia, where playboy has gone on sale for the first time. traditionalist muslim leaders have expressed disgust. the magazine's offices have been attacked and its editorial staff have gone into hiding. it was clear that paula's only contest was with the clock. and as for her sporting legacy, paula radcliffe's competitors will be chasing her new world best time for years to come. shouting. quite quietly but quicker and quicker, she seemed tojust slide away under the surface and disappear. this is bbc news.

the latest headlines: president biden calls new sanctions on russia "a proportionate and measured response" to alleged russian interference in us elections and cyberattacks. buckingham palace has released details of those who'll be able to attend prince philip's funeral on saturday. there's a limit of 30 guests. 0ur royal correspondent, nicholas witchell, has more. it is the vehicle which will take him on his finaljourney — a classic british land rover, designed to the duke's own specification to carry a coffin, his coffin, to its final resting place. it's a no—nonsense approach to a funeral, which reflects the duke's particular wish for a minimum of fuss. normally, a ceremonial royal funeral — this was the one for queen elizabeth the queen mother in 2002 — would have the coffin borne on a horse—drawn gun carriage,

behind which members of the royal family would walk. and those family members who hold military rank would be in military uniform. but for the duke's funeral — notwithstanding his long association with the military — all the royals will wear civilian dress. walking in the front rank of the procession, behind the coffin, will be the princess royal and the prince of wales. behind them, the earl of wessex and the duke of york. and then in the third row, princes harry and william, but not side by side. the princess royal's son, peter phillips, will be between them. so, what lies behind the decision for the royals not to wear uniform? it's certainly highly unusual. the obvious answer is that it's to spare harry embarrassment since he's no longer entitled to wear a military uniform. all the palace will say is that all the arrangements have been signed off by the queen. once they get to st george's chapel, the queen will sit on her own. there will be just 30 members of the congregation, all of whom will wear masks. according to the palace,

difficult decisions have had to be made about who those 30 should be. they'll include three members of the german branch of the duke's family. and although the funeral will take place in private, behind the castle walls, there will be a ceremonial element to it. the king's troop royal horse artillery have moved to windsor to be on hand to fire a gun salute. the footguards and other service contingents, including the royal marines, will also be taking part. they'll be responsible for bearing the duke's coffin out of the castle and then into the chapel. everything is being carefully rehearsed. and though the palace has done its best to discourage people from leaving flowers, many have chosen to do so. all the bouquets have been gathered in the grounds of marlborough house, where they've been inspected by the prince of wales and the duchess of cornwall. most are accompanied by messages, paying tribute to the duke and thanking him for his years of service. nicholas witchell, bbc news.

one of hong kong's most prominent pro—democracy activists goes on trial on friday under the territory's new draconian national security law, which critics say erodes the city's rights and freedoms. in a separate case, mr lai is also expected to receive a jail sentence for another crime. the bbc�*s danny vincent has had exclusive access to mr lai over the past nine months since his arrest and has this report. billionaire, activist and a staunch critic of beijing. jimmy lai is also the owner of hong kong's last remaining opposition newspaper. he now faces possible life in prison in a case symbolising china's tight grip on the city. when he was arrested, supporters gathered outside the police station, awaiting his

release. we've followed jimmy lai and his newspaper since he was first arrested nine months ago, as his supporters gathered outside a police station awaiting his release. since the introduction of the new law, hong kong has experienced dramatic changes. 0utspoken critics, street protesters and even journalists like me are under increased pressure. i'm a journalist! come here, come here! i am investigating you! after his release on bail, we metjimmy lai in his mansion home. do you think about the contrast between this and the prospect of living...? in prison? this is just living my life peacefully. but if i'm injail, i'm living my life meaningfully. because you must fear some things, for yourfamily, for hong kong, for your loved ones? yes, i do have fear. you're right. hey, good morning, everybody. this is a very nice day in hong kong today... despite the fear, jimmy lai continued his criticism of

beijing. livestreaming from his newspaper headquarters, he'd broadcast his talks with prominent western political figures on a weekly basis. yeah, i think the freedom of speech is in danger here, in hong kong. beijing says the new laws were needed to restore stability and end violent protest in the city. and the laws also make jimmy lai's broadcasts a risky move. given their vague wording, it's unclear if the discussions could land him with even more charges. his every word spoken could be used against him. good morning, how are you? beforejimmy is finally detained, we meet him one last time. i'm prepared for the worst. if the worst comes, that means the most effective way that i can bring the world's attention to hong kong. tomorrow, jimmy lai is expected to begin serving jail time

for an earlier crime, protesting against the government. and his trial, under the new law, begins. according to beijing, the charges against him are equal to treason. they've compared the seriousness of his alleged crimes to murder. the fate of activists likejimmy lai will set a new precedent for hong kong. the space for dissent is shrinking. danny vincent, bbc news, hong kong. while the coronavirus pandemic has kept most of us locked down, its impact on the natural world has been more positive. sir david attenborough has made a documentary exploring how our relationship with wildlife and nature has changed during covid. sir david has been speaking to our science editor, david shukman. david attenborough: march 2020. 0vernight, our lives are put on pause. boris johnson: you must stay at home. i but as we stop, remarkable things start to change. david shukman: the lockdowns

have been tough for people, but great for wildlife, as we see in a spectacular new documentary with david attenborough. this is the year earth changed. david, it's great to talk to you. i'm sorry we can't meet in person, but we've transported you electronically to the wonderful setting of cha rtwell. for people watching your programme, that's going to be shown on apple+ tv from friday, what message would you want them to take from it? that human beings, even with the best will in the world, cannot restrict the natural world. that's what we're doing, we're pushing it aside. even the most considerate of us are pushing aside the natural world and denying space to other creatures which live on this planet. i mean, we've thought that animals, for example penguins in south africa, have survived perfectly well, we think, but in fact

when we retreated we discovered that the penguins actually normally would be doing very much better than they have been doing for decades, so the lessons to us are saying you should not be so domineering. but let us suddenly realise that we are intruders, that we are latecomers, and that the natural world actually by and large would do much better if we weren't there at all. to what extent is it important or not, or in what form, that the great climate summit takes place at the end of this year? well, it's our last chance, and young people understand the science pretty clearly, and they cannot understand what it is that prevents grown—ups, adults, taking sensible action, because they know what the action should be. we know what the problems are, we know how to solve it. why aren't they doing it? and, of course, the answer is, that to do it you've got to get the agreement of the entire human race. no—one, at no time in the history have the nations of the world until now, said, ok, well, we're taking rather more of our share and we will retreat a bit and let you have a share, and that kind of unselfishness is not an attitude that has been present in human politics ever,

and it's got to come, because if it doesn't we will lose the lot. sir david attenborough speaking to david shukman there. the paint supplier dulux has launched an investigation — no doubt to avoid a whitewash — after the company posted on social media mocking tottenham hotspur football club. spurs revealed dulux had become their official paint supplier on thursday. the tweets from dulux,

which painted the club in a bad light, were subsequently deleted but not before mark lobel caught a glimpse. described as the perfect match, tottenham kicked off their contract with their first ever official paint supplier. to mark the occasion, dulux showed its distinctive mascot, an old english sheepdog, inspecting whether spurs�*s billion—dollar stadium is in need of a link or something or other. five minutes later, tackling a question on twitter about whether the dog could play centre—back, presumably in place of these four, who came with a price tag of $86 million, to have one of the best defensive records in the league. dulux tweeted, "he might do a betterjob." mixing up might do a betterjob." mixing up some more, dulux showed tottenham's furphy cabinet stripped bare in response to a suggestion they may wish to store their pains there. it is true, tottenham's head coach, who marini oh, is under

pressure. could today's sponsorship deal help them become top dog? what do you think of your new sponsor? what think of your new sponsor? what was that? their _ think of your new sponsor? what was that? their logo _ think of your new sponsor? what was that? their logo is _ think of your new sponsor? what was that? their logo is a - was that? their logo is a sheepdog. the new paint sponsor. have you seen it? what is that? don't— sponsor. have you seen it? what is that? don't worry _ sponsor. have you seen it? what is that? don't worry about i sponsor. have you seen it? what is that? don't worry about it, i is that? don't worry about it, then! well, _ is that? don't worry about it, then! well, what? _ is that? don't worry about it, then! well, what? 0k. - is that? don't worry about it, l then! well, what? 0k. thanks, ga . then! well, what? 0k. thanks, gary- george? _ then! well, what? 0k. thanks, gary. george? and, _ then! well, what? ok. thanks, gary. george? and, by- then! well, what? 0k. thanks, | gary. george? and, by george, with a sheepish _ gary. george? and, by george, with a sheepish dulux _ gary. george? and, by george, with a sheepish dulux now- gary. george? and, by george, with a sheepish dulux now in i with a sheepish dulux now in the doghouse, they said they deeply sorry. their social media team presumably left with excel on their faces. and initially bemused tottenham said they have brushed off the road with their newest sponsor, insisting that this time the club will gloss over it. mark

lobel club will gloss over it. mark lobel, bbc news. remarkable. we try to bring you the latest and something late here on bbc news. i'll be back with a headline soon. bye—bye. hello there. under clear, starry skies, temperatures have once again been dropping. it means a cold, frosty start for most on friday morning but a mainly dry day ahead, with some spells of sunshine once any early fog has cleared. high pressure stilljust about in charge, but this frontal system will be trying to change things, with more cloud and some rain eventually into the far north—west, but most of us having a cold, frosty but bright start. fog patches most likely across eastern and southern counties of england. they should lift and clear. sunshine through the morning. more cloud, i think, developing for many inland areas into the afternoon, and certainly thicker cloud as this weather front approaches western counties of northern ireland and north—west scotland. some rain splashing in here later and a strengthening

freeze. but that breeze coming up from the south, bringing some mild conditions to northern ireland and scotland — 15 likely in northern scotland. compare that with just 8, 9 or 10 for some of these north sea coasts of england, the breeze still coming in off the chilly waters of the sea. now, as we head through friday night into saturday, england and wales will see clear skies again. that means a touch of frost and the odd fog patch, but we will see more cloud into northern ireland and certainly western scotland, and that means a milder start to saturday. and that cloud comes courtesy of this next frontal system trying to work its way in. so thickening cloud for parts of northern ireland and north—west scotland first thing. clearest of the skies across england and wales. that's where we'll see a touch of frost and the best of the sunshine of the day. although, actually, after that cloudy start, northern ireland and a good part of scotland should brighten up a little with some afternoon spells of sunshine. those temperatures, 11 to 15 degrees. it should feel a little bit less chilly at this stage for those north sea coasts of england. now, through saturday night and into sunday, we see frontal systems still wriggling around to the north—west of the uk.

if anything, the veil of cloud associated with those weather fronts will move a little further south—eastwards, so sunday could be a cloudier day for some western parts of england and wales, certainly more cloud into northern ireland and scotland, with some rain into the far north—west. best of the sunshine further south and east and temperatures between 10 and 15 degrees. now, we will see some rain at times in north—western areas to start next week, but high pressure will build its way back in, so that means plenty of dry weather to come with some spells of sunshine.

this is bbc news. the headlines: president biden has struck a moderate tone in defending a new raft of sanctions on russia, describing the measures as a proportionate and measured response to russian interference in us affairs. earlier, moscow warned the us ambassador that the sanctions were "raising the temperature of confrontation." a white former policeman charged with the murder of a black man, george floyd, in the united states, has waived his right to testify on the final day of evidence at his trial. derek chauvin is accused of killing mr floyd by kneeling on his neck with undue force. police body camera footage appears to show that a 13—year—old boy shot dead in the us city of chicago last month was not armed at the moment police opened fire. adam toledo is seen apparently dropping a handgun and raising his hands less than a second before being shot. now on bbc news, the week in parliament.