commonwealth leaders are meeting to decide whether prince charles should succeed the queen as head of the organisation. leaders and senior politicians from the 53 member countries are meeting in windsor to discuss the future of the organisation. today will be a memorable occasion for all of us and, by the end of which, i'm sure we'll be able to leave even closer friends and with a unique understanding of each other in ways which cannot be matched by other summits. also this lunchtime. the resignation of the premier league's longest serving manager. arsenal's arsene wenger, announces he'll leave at the end of the season, after almost 22 years in the job. officials insist salisbury‘s safe for visitors and residents despite warnings that toxic hot spots of the nerve agent, used against a former russian spy and his daughter, could still be present. the former director of the fbi tells the bbc that he doesn't believe there is anyone around donald trump who can stop the president's "impulsive behaviour." mo farah prepares to compete

in the london marathon this weekend for the first time since quitting his track career in what looks set to be one of the hottest races on record. also coming up on bbc news, who will be the person to succeed arsene wenger at the emirates stadium? his former captain patrick vieira is among the early favourites. good afternoon and welcome to the bbc news at one. commonwealth leaders have gathered in windsor for a second day of discussions about their future. today, the government indicated it would welcome zimba bwe‘s re—entry to the club, after robert mugabe pulled the country out in 2003. the summit is focusing on the environment, trade and security, but, behind closed doors,

discussions are continuing on whether prince charles should succeed the queen as head of the commonwealth. yesterday, she said it was her "sincere wish" that he should take over "one day. " our diplomatic correspondent, james landale, sent this report from windsor. this is something that has never happened before. almost 50 commonwealth leaders gathering amid the splendour of windsor castle to discuss their future. it's called a retreat where they sit without advisers, agenda, and, yes, without a table, to talk frankly among themselves about what the commonwealth is to do to prove its relevance to ordinary people. good morning, everybody, welcome to windsor castle. the prime minister said the leaders were committed to revitalising the commonwealth, making it more sustainable, prosperous and secure. but... a conversation about these challenges cannot ignore the fact that, at the very moment that international cooperation is so important, some nations are choosing instead to shun the rules—based system

that underpins global security and prosperity. but i look forward to discussing how commonwealth can play its part to support the rules—based order, and the very concept of international corporation. of international cooperation. so today the leaders will walk through all the issues the commonwealth is facing. the threats from the environment, and cyber, and the opportunities of greater trade and cooperation. and, within the grandeur of the queen's home, they were also expected to discuss her request that the prince of wales succeeds her as head of the commonwealth. the focus on making this organisation fit for the modern world. england leaving europe. canada struggling with its own nafta deal. the idea we are a fraternity, we came from the same dna in many instances. that there is some relevance. earlier, borisjohnson held talks with african foreign ministers including zimba bwe‘s.

the foreign secretary said britain would support zimbabwe rejoining the commonwealth one day, but that would depend on the country embracing free elections, the rule of law and human rights. theresa may had hoped to use this summit to highlight britain's global ambitions after brexit. but the row over caribbean immigration has made that harder. the task today is for commonwealth leaders to agree a new mission for an organisation that is seems valued but often is in need of a role. james landale, at the commonwealth summit in london. our royal correspondent, jonny dymond, is in windsor. there are reports coming in that the prince of wales will succeed the queen, what can you tell us? yes, it appears now that diplomatic sources have told the bbc that the meeting which started this morning at windsor has now agreed that prince charles will succeed the queen. she

said yesterday it was her sincere wish that, one day, her son prince charles should succeed her. the 53 leaders and senior politicians of the commonwealth are gathered here they've been talking for a while now and diplomatic sources have told the bbc they have agreed prince charles will succeed. i think we can probably expect a statement confirming that come the end of the day. that would be a source of great satisfaction to the queen. i suspect this was squared off with the countries that make up the commonwealth before the queen made her expression of desire yesterday. but this was still a decision for heads of government, not the decision for the queen. they've had to get together and formally agree it and it appears they've done just that. thank you. arsene wenger is to leave arsenal at the end of the season, ending a near 22—year reign as manager. his decision to stand down brings to an end one of the longest tenures at the head of a top—flight club, during which the gunners won three premier league

titles and seven fa cups, including the double in 1998 and 2002. but they're now sixth in the league and are set to miss out on a top—four spot for the second straight season. 0ur sports correspondent, david 0rnstein, is at the emirates stadium in north london. 0n on and off the pitch, arsene wenger will leave a profound legacy at arsenal, even the stadium ucb hynde me was spearheaded by him. for so long, arsene wenger and arsenal went hand—in—hand, both for this club and british football, they lose one of the best we've seen. he was the man who brought glory to the gunners. transformed arsenal, revolutionised english football, established himself among the greats of the game. without defeat, without equal, without doubt the best team in the land is arsenal. the more

recent yea rs, in the land is arsenal. the more recent years, arsene wenger has tasted a different side to the sport. intense criticism. three fa cups infour sport. intense criticism. three fa cups in four years have failed to satisfy many arsenal supporters. their team no longer keeping pace with their biggest rivals nor challenging for the biggest trophies. even yesterday the frenchman was underlining his commitment to the team. my personal situation is not so much my worry at the moment. you have to give me some credit. if you look back at my career, you'd have to accept that my priority was always the interest of arsenal football club. players and staff arrived at the training ground this morning unaware of what was about to unfold. the 68—year—old saying the decision followed... it marks the end of an iconic era

that saw wenger introduce new training methods, a thrilling style of play with plenty to show for it. three premier league titles, a record seven fa cup adobo, and perhaps his greatest achievement, an entire league season unbeaten. he was a dominating guy in the mid—90s early 20005. he was a dominating guy in the mid—905 early 20005. he was winning pretty much everything. i'd wonderful football so i admired his work alway5. football so i admired his work always. the subject of wenger's future has long divided arsenal fan5 but today they were divided. couple of cup wins have glo55ed over the cracks but i think it is the right time. i'm very sad he's going. i wonder who we are going to get next. so, the speculation which has come to engulf this club and its manager is finally put to rest. however, that only makes way for even greater uncertainty in arsenal, that of life without wenger. this day always had come at some point but it still has arrived as a

genuine 5hock. arsenal will need to refocu5 quickly because they could yet to finish the season with a trophy. they are still in the europa league and they play atletico madrid in the semifinals. and on sunday they face west ham in wenger's penultimate league game in charge of arsenal so it'll be interesting to 5ee arsenal so it'll be interesting to see their reaction to him. he and arsenal will hope his era end5 see their reaction to him. he and arsenal will hope his era ends on a high. people in salisbury have been warned there could still be dangerous levels of the nerve agent left in the city after the poisoning of a former russian spy and his daughter last month. at a public meeting last night, a senior government 5cienti5t told residents that nine locations had to be decontaminated. local people have expressed frustration that parts of the city have still not been re—opened to the public, but specialists say work to clean up the sites may take months. 0fficials insi5t salisbury is still safe to visit, as our home affairs correspondent, daniel sandford, reports. it is almost seven weeks now since

yulia skripal and sergei skripal nearly died on a bench in salisbury city centre. bu5ine55es here are desperate for customers and tourists to return after the nerve agent attack but football and takings are still down. 0ne shopkeeper 5aid attack but football and takings are still down. 0ne shopkeeper said the city is still like a ghost town. rather than the cordon5 coming down, they are being strengthened and reinforced a5 salisbury settles in for a clean—up that could take months. those hotspots will all be in the locations we are talking about... at a public meeting, the chief 5cienti5t from the department from the informant tried to explain why they're still could be dangerous amounts of the russian designed deadly nerve agent in a few places in salisbury behind those cordoned5. that is an assumption, one we've tested in some cases and we know there are hotspots like that around. so, we have to make those a55umption5 so, we have to make those assumptions that some of the hotspots we still have to find. when the prime minister visited salisbury five years ago —— five weeks ago

promising to get the city back on its feet, the first place she visited wa5 its feet, the first place she visited was this shop. today, rebecca say5 takings are still down in the shop. it is frustrating because we just want to move on and carry on but we can't. there are still carry on but we can't. there are 5till things in the news, people worry to come into salisbury. business is struggling and we are worried salisbury i5 business is struggling and we are worried salisbury is going to die from it. among the friday shoppers this morning, there was a mix of stiff upper lip and nervousnesslj won't stiff upper lip and nervousness.” won't walk down that side. i crossed over the road today but i wouldn't go around the corner or anything like that. until all this. .. all the risk is removed, it's going to be very ha rd risk is removed, it's going to be very hard for people to pick the pieces are but we will all stand together. the skripals making a good recovery but despite weeks of free parking in the city, the concerns about toxic nerve agent hotspots

have left sali5bury‘5 economy struggling. daniel sandford, bbc news, salisbury. a woman has died in a fire at a block of flats for adults with learning disabilities in chingford in north—east london. more than 70 firefighters were called to the blaze which took hold in the early hours of this morning. it's not yet clear what caused it to start. the eu's chief brexit negotiator, michel barnier, has warned there is still a chance that talks on britain's withdrawal deal from the bloc could fail. mr barnier said that while three—quarters of the deal had been agreed, the irish border i55ue remained a key stumbling block. 0ur correspondent gavin lee is in bru55el5 for us with the latest. tell us more. this is the eu's chief negotiator for the eu making tell us more. this is the eu's chief negotiatorfor the eu making crystal clear that whilst three quarters they are pretty much in agreement on what the brexit deal or the withdrawal agreement of both the uk and the european parliament have to ratify by march next year, the last 2596

ratify by march next year, the last 25% come because of the series i55ues 25% come because of the series issues involved, 5aid 25% come because of the series issues involved, said could be problematic and risks failure, he said. the chief problem being the border between the republic of ireland. this is what he had to say earlier today. translation: for the moment, we are preparing the orderly withdrawal of the uk with 25% not agreed, and that includes serious issues, especially the question of ireland. the other issue today is that some newspapers have been reporting that there are problems between the british and european side when it comes to the northern ireland border specifically, and the bbc understands the eu have said they've ruled out line by line the two chief proposals being put forward about how you solve the issue. one of them is having a partnership for customs. basically, all the duty is paid for by the british government on the island side, and having an alignment, so basically having technology used for scanning and a trusted scheme for vehicles being

able to move freely through that 300 mile border. the eu say at the moment it is simply unacceptable, it is inappropriate for the size of the border. the spokesperson for the prime ministers said they believe that isn't their understanding of the negotiations so far and they'll keep going ahead and believe there isa keep going ahead and believe there is a reachable solution. there are more rounds of talks, four we expect, before a summit injune. our top story this lunchtime. diplomatic sources tell the bbc that prince charles will succeed the queen as the next head of the commonwealth. and still to come. why the national trust wants to move its focus from the countryside to our cities. also coming up on bbc news, will have more on the departure of arsene wenger, after more than two decades as arsenal boss. his liverpool counterpart jurgen klopp has called him a big role model. the national trust needs

to be more radical, and reach out to people living in cities. that's the view of the charity's new director—general, who says she wants to work with people in urban areas to help it become more "relevant". in herfirst interview since getting thejob, hilary mcgrady said "the people that need beauty the most, are the ones that have least access to it". she was speaking to our correspondent, claire marshall. on the path to scafell pike, england's largest mountain. hilary mcgrady has just taken charge of england's biggest charity. the figures are as huge as the landscape. the national trust has five million members, assets of over £1 billion, and owns an area of land the size of dorset. people say the trust has become corporate and bloated. what are you going to do about it? it is going to be radical. but rather than change it, i want to add to it. i want to reach more people.

and most people live in urban areas. the days of walking into one of our beautiful houses and saying, a family lived here, it is not going to do it. we need to think about what are the stories that are relevant. why is it someone from the middle of birmingham would find that interesting? what is it in birmingham that they would get more value from? this ecologist gives us a glimpse into the past. this is what the lake district looked like 1,000 years ago. a great wood near borrowdale, a fragment of temperate rainforest. just up the road, the much—loved more modern panorama. i see it as desolate, devoid of birdlife, i can't see a single tree. this landscape characterises so much of what we see in the hills of britain, i think it is an environmental crime. we need to look at it as a wounded landscape. it has been changed over the millennia by lots of different forces and we are not getting the landscape bounce back to the exciting wildlife

field area it could be. this is beatrix potter's house. she was a fierce campaigner for the national trust and gave it to the charity. historic properties like this helped to bring in £600 million last year. there seems to be a preoccupation with raising money and focusing on those aspects of the charity, rather than actually focusing on what the charity's core business and concern is. the trust attracts negative headlines, like last year's row over the word easter being left out of the annual egg hunt. it was quickly put back in. the reality is, with five million members, with 200 million people coming to our properties, someone somewhere is likely to be annoyed with us. that is part of it. i quite like that. i like the debate. that is why it is interesting. if people were not passionate about the trust, it would be a very sad day. claire marshall, bbc news,

in the lake district. a bbc reporter has told the high court that he had an "understanding" with a senior detective over the police search of sir cliff richard's home in august 2014. officers launched an investigation after receiving an allegation of sexual assault. the singer was never arrested or charged. our correspondent, helena lee, was in court. this is the third day that dan johnson has been in the witness box here in court. the focus today has been on his dealings with south yorkshire police and then e—mail was read out in court that was sent by a senior bbc news editor, two days after the bbc‘s coverage of that raid on sir cliff richard's apartment. gary smith, in that e—mail, was referring to south yorkshire police and danjohnson and he said they felt their own course

of action to protect their enquiry was to cooperate totally with him. this suggests an extreme naivete on their part, but it also suggests, and dan does not entirely deny this, rather heavy—handed approach by him. he seems to have been mailing them toa he seems to have been mailing them to a wall. then there was an exchange caught between yorkshire police's barrister and dan johnson. he between yorkshire police's barrister and danjohnson. he was asked what led mr smith to take the view that your conduct suggested a rather heavy—handed approach? he replied and said he clearly heard the account of carrie goodwin. she was head of media at south yorkshire police. i was quite surprised commies said, and my initial reaction was, i was mystified, why is she saying that? i don't think i have acted at all like that. danjohnson have acted at all like that. dan johnson will continue giving evidence here in court after the

lunch break and we are expecting later on this afternoon to hear further evidence from some abc news senior further evidence from some abc news senior managers. further evidence from some abc news senior managers. thank you. the world's first global cancer database has been launched by an australian billionaire. patients will be asked to hand over their health records to the universal cancer databank, which will share information about emerging new treatments. the former labour minister, dame tessa jowell, who has an aggressive brain tumour, has become the first person to sign up, as our health correspondent, catherine burns, reports. it was one of her biggest achievements as an mp championing the london 2012 bid. i am tessa jowell, olympic minister. baroness jowell. but her influence did not stop when she stepped down as an mp. last year she found out she has glioblastoma, a high—grade brain tumour. since then she has focused on campaigning for better treatment for other patients. what gives a life meaning is not only how it is lived, but how it draws to a close.

baroness jowell says she feels a tremendous sense of mission to help others in her position. it is far from easy though. researchers in this lab are trying to find a successful for all brain tumours, but as with all rare cancers, clinical trials can be difficult, because it is hard to find enough patients to take part. which might explain why brain cancer is relatively rare, but is still the biggest cancer killer of children and adults under a0 in the uk. baronessjowell has become the first to share her details on the universal cancer databank. the aim is simple, to find better treatments and quickly, especially for rare types of cancer. it is being set up by an australian billionaire whose aim is to eliminate the disease. we can contribute collective power and organisation, an ability to reach to every country and every government,

and every corporation in the world and say let's raise this and only do it through collaboration. the data bank is still a work in progress, but the idea is that patients will be able to share their information anonymously, about illnesses and treatments. researchers around the world will be able to access that data for free. when they are living and dying with this very brutal disease, giving us the gift of this data and sharing it globally means we are much more likely to reach a cure and better treatments. baroness jowell was back in parliament yesterday as mp5 from all side paid tribute to her campaigning. her family say she is still as magnificent as ever. she is only using this experience to drive this incredibly bright, bold and brave light that she has, and every day she is leading us in her way. catherine burns, bbc news. memos written by the sacked former fbi director, james comey, about his meetings

with president trump have been published. the notes provide details of his allegation that the president asked him to drop an investigation into a former national security adviser. donald trump says the memos show there was no attempt to obstruct justice. in his first uk interview — mr comey has given emily maitlis his thoughts on the trump presidency. if i were to describe your role in the 2016 us election as pivotal, would you accept that? i would try to say i hope not, that it was certainly an important role and a prominent role. whether it made a difference in our election, my honest answer's is i don't know, and i hope not. would you apologise to hillary

clinton? read the two chapters in the book. we were not trying to hurt or help either candidate, we were trying to do our best in a nightmare. let's fast forward to january 2017. trump has won, you're on your way to trump tower to tell the president—elect about a secret dossier, the steel dossier, allegations of misconduct, conspiracy between trump's campaign team and the russian government. did he seem worried about that? he seemed focused on it in one respect, which has tried to confirm it had no impact on the actual vote. and did that strike you as odd? yes. well, that's a legitimate question for a candidate to ask. what struck me was what wasn't asked, which was what's next and how do we protect the american democracy from this russian threat?

i don't remember any questions about that. you talk of president trump staining those around him. what did you mean by that? i think the way in which he acts, especially his... corrosive effect on norms, truth telling being the most important of them, has that staining affect on institutions and people who are close to him. he has a habit of... and even people who support him would agree with this, i think, of telling lies, sometimes big, sometimes casual, and insisting the people around him repeat them and believe them. and that is... that stains any human. are you convinced there are now enough sensible, reasonable people around him to stop impulsive behaviour? i am not. so... you don't sleep easy at night thinking someone will contain him, there won't be an impulsive gesture or action? i wake up some mornings and read

the president is demanding the jailing of private citizens, occasionally me. and, so, that's one of the reasons i'm confident the answer is there are not adequate people around him to stop impulsive behaviour. look, i want the president to succeed. i want every us president to succeed. if he's able to achieve a resolution in north korea, that is a great thing for the country and the world. that would be wonderful. i continue to have the concern i have about his effect on our core values and, so, despite... i hope there is lots of successes in the rest of the trump administration. that doesn't mean we shouldn't focus on the threat that his conduct poses to what matters most to this country, which is our values. do you dislike him? dislike him? no, not as a person. i actually feel sorry for him as a person. i dislike his actions, especially the attack on things like the rule of law and the truth. the chief executive of barclays

is to pay a fine after uk regulators found he had broken conduct rules when he tried to unmask an internal whistle—blower at the bank. jes staley retains the backing of the barclays board who said there was no suggestion mr staley had acted with "a lack of integrity". german police say they've successfully diffused a second world war bomb, which was found in berlin's city centre. the bomb was found during construction work. about 10,000 people were evacuated. this sunday's london marathon promises to be one of the hottest in the history of the event. organisers have warned runners to take precautions, with temperatures forecast to exceed 20 degrees. but anticipation is running high for other reasons, mo farah is competing in the men's race for the first time since quitting his track career, as our sports correspondent, joe wilson, reports. this is the same mo farah. what's different is the distance and the scenery. on the track he beat everyone everywhere,

but moving to the marathon, 26 miles, 35 years old, he warns us to be realistic. it's going to be totally different. london marathon is one of the big marathons in the world, and the best marathons, and most of the best runners do turn up here, so sunday's race will be a difficult one. i am ranked, number 27, so we'll see! the thing is, mo, knowing you, you will not have gone on this marathon journey without thinking it's going to end in glory. it has to end in tokyo with a gold medals, doesn't it? it is possible and my aim is to be able to run as many marathons as i can, to learn about them and to run decent times. he's got about 30 seconds to get across that line. in 1984, a welshman called steve jones who worked for the raf completed his first marathon in chicago. he ran the distance quicker than anyone ever before. jones still holds the british marathon record set in the 19805. does he think farah will break it on sunday?

without a doubt, in my mind. even if the conditions are warm at the weekend, where has he been training? he has been training in ethiopia and i don't see much snow or rain around in the many pictures i have seen of him training, so this is going to be like a training run. but for the masses, the heat will be a challenge. this year, think carefully before wearing fancy dress, the organisers advise. but the marathon will always push runners to the limit, that is the point. remember this from last year? david wyeth helped to the finishing line by matthew rhys, two strangers reunited, and they are back this year, urging competitors to be sensible. you've got to pay attention to the weather, you've got to rein in the pace and maybe this year isn't the one for pb, but it's certainly going to be one to be enjoyed. and you're not going to be stopping for this guy this year, no? well, i hope not, will bothjust run our own race and see each other at the end. matt is a great runner and he is even more inspired these days to get out in front and stay

out in front, don't cross paths with me! as for mo farah, well, he knows what the photographers need. london's organisers acknowledge he is being paid a lot to compete, but told me he is worth every penny. joe wilson, bbc news, tower bridge. good luck to all. time for a look at the weather. here's ben rich. the sunshine might have you dreaming of beaches and barbecues. if you are, i would of beaches and barbecues. if you are, iwould have of beaches and barbecues. if you are, i would have a look at the weather forecast first before you make plans. this is how it looked for a weather watcher at hampton court in south—west london