this is bbc news. i'm vicki young. the headlines: more police officers are deployed in london, after four shootings in just 2a hours leave one teenager dead and three injured. let my son he the last and be an example to everyone. just let this stop. vladimir putin is to be sworn in for a fourth term as president of russia, marking 18 years in power. the foreign secretary warns president trump that pulling out of the iran nuclear deal could lead to a middle east arms race. record—breaking temperatures for a bank holiday could be on the way for some parts of the uk. we are ready the sunshine and blue skies here, as we get ready for a heatwave. also, the rising cost of vanilla sending a chill down

the spine of ice—cream makers. a worldwide crop shortage means the extract is now more expensive than silver. and a pioneering team of zoologists and botanists head to the amazon in search of genetic material. that's in half an hour, here on bbc news. good afternoon and welcome to bbc news. the metropolitan police are continuing to investigate four separate shootings in london over the weekend. a 17—year—old boy has died, and three other people are in hospital, although their injuries are not considered to be life threatening. simon clemison reports. to try to tackle violent crime, police had already drafted in more officers this weekend. overnight, they were out again. but in a battle against numbers, they had four more shootings

in 2a hours. rhyhiem ainsworth barton died of his injuries. my son was a very handsome boy. he's gone. the 17—year—old was said to be playing football near his home in south—east london. he's the 15th teenager to lose their life since christmas. in north london, two shootings, two boys a short distance from each other. they survived, they're 13 and 15. police are investigating whether there's any link. their injuries are not said to be life—threatening. in yet another incident, police were flagged down here in south—east london where a man in his 20s had been wounded. the focus this weekend has been on violence with guns but more than half the deaths in the capital so far this year have been from stabbings. what's driving this spike is not clear either, which makes finding a solution tough. simon cleminson, bbc news, lewisham. vladimir putin will be sworn in as president of russia today , 18 years after he was first elected.

in the latest vote in march, he won an overwhelming victory after the main opposition leader was barred from standing. over the weekend, demonstrations against mr putin's leadership were staged across russia and more than a thousand people were arrested. our moscow correspondent steve rosenberg reports. he should know the drill by now. later today, for the fourth time, vladimir putin will walk through saint andrews hall of the grand kremlin palace to take the oath of office. in the great hall where russian emperors were crowned , mr putin will once again be declared president of the world's largest country. he's already the longest serving leader here sincejosef stalin, the most powerful, too. but president putin 4.0 faces some tough challenges. after the nerve agent attack in salisbury that britain blames on the russian state,

m oscow fa ces international isolation. the war in syria is another potential flash point in relations between russia and the west, which are at their lowest level since the cold war. meanwhile, western sanctions against russia are beginning to bite. to boost the economy here, will president putin mend bridges with the west? and how will he deal with opponents at home? this is how an anti—putin protest ended in moscow on saturday. the kremlin has been cracking down hard on public displays of dissent. that is unlikely to change. steve rosenberg, bbc news, moscow. let's cross live to moscow and our correspondent there sarah rainsford.

sarah, reports of arrests and brutality, what has been said? we understand 600 people were detained in the protests which took place right across russia. some of them we re right across russia. some of them were released right away but some of them will face charges and short spells in police detention orfines. that includes the man who called the protest, the main opposition figure and the man who rallies significant support, as we saw over the weekend, when mainly young crowds took to the streets and marched through those streets and marched through those streets shouting, amongst other things, down with the czar and russia without putin. so significant crowds, but not the majority of russians. remember, vladimir putin was voted back into power for this

fourth term with almost 70% of the popular vote. there is little opposition allowed here, but still, i think there is broad public support for vladimir putin and his policies, despite the significant protests on the streets. what is he likely to do with this next term in office, strained relations with the west, he has got to sort out the economy and he has talked about improving living standards, is that the priority for him now? he is talking as if that is the priority, talking as if that is the priority, talking about a breakthrough economically, for people to see their standard of living improve and people to see their incomes increase. he has said that before, made pledges and promises before and at the same time, as he is talking about this need to improve the economy, they economy is suffering under western sanctions and those sanctions are a direct result as mr putin's foreign policy. a lot of

people don't think he is about to change his foreign policy, and this period of confrontation with the west and the isolationism that is now russian policy. i think people will feel this in their pockets. but as president putin begins to talk about enemies at the gates and hostile forces, he is hoping patriotically feeling is will mean people don't punish him for the economic pain they are feeling and will continue to support that policy of confrontation with the west, because they feel russia is a strong country once again. thank you sarah. borisjohnson is expected to make a series of appearances on american tv during a trip to washington, in an attempt to persuade president trump not to abandon the iran nuclear deal. he'll also eet us vice—president, mike pence, and the national security adviser, john bolton, warning that pulling out of the international agreement could lead to a nuclear arms race in the middle east.

0ur reporter andrew plant has more. donald trump has long been clear about his contempt for the deal with iran, saying it has disastrous flaws. it was signed in 2015 between iran and six world powers. it was so incompetently negotiated, our deal with iran. one of the crowning achievements of barack 0bama, iran agreed to mothball much of its nuclear programme in exchange for sanctions being lifted. now, donald trump is saying he will scrap it, prompting this response from iran. translation: if the united states leaves the nuclear agreement, they will soon regret it like they have never regretted anything before in history. britain's ambassador to the un has said that the uk, france, and germany are now looking at ways to keep the deal if america withdrew its support.

we have been talking at a senior official level with french and german colleagues for several weeks now. we are making progress but we have not got there yet. we have a few days left to find a way through. borisjohnson is visiting washington. he published an article in the new york times on sunday describing the deal as the best way of preventing iran from developing a nuclear weapon. he will now to sway donald trump's decision before the deadline on the 12th of may. andrew plant, bbc news. forecasters are predicting today could be the warmest early may bank holiday monday on record, with temperatures in the midlands, east anglia and south east potentially climbing to 28 degrees. most of the uk has been basking in a spell of unseasonably warm weather over the weekend, as richard main reports. it has been a picture postcard bank holiday weekend so far from east lothian to brighton and pretty much everywhere in between.

sun—seekers in scotland and northern ireland enjoyed their warmest day of the year so far yesterday. whilst west london was the hottest place in the uk with thermometers near heathrow peaking at 26.3. it was a day for hitting the beach, and perhaps dipping a toe in the sea. the early may bank holiday was introduced in 1978, and since then, the monday temperature has never broken out of the low 20s. but that could be set to change later today with forecasters predicting somewhere in the south—east of london it could hit 28 degrees celsius. so whatever you choose to do with your bank holiday, make the most of it, as temperatures are set to return to more normal levels later this week. richard main, bbc news. in a moment, will speak to our correspondent kathryn stanczyszyn in london's regent's park, but first let's speak

to claire wooding who's in bigbury—on—sea on the south devon coast. iam indeed i am indeed and here we are expecting a real heatwave here at brigbury. you might be able to hear the lapping of the sea against the shore and we have their island with the iconic landmark hotel which has played host to agatha christie, two of her novels were inspired by the island. noel coward came for three days and stayed for three weeks. we can understand why. the tide is on its way in at the moment and by 3pm the island will be cut off and the only way to get to it will be by the sea tractor or by boat. brigbury is enjoyed by water sport lovers. you have been out on the water this morning, what has it been like?

conditions are really calm, light winds, small weights are perfect for beginners. the sun is out so everybody is happy. what is the most popular watersport here at brigbury? probably surfing, but in the summer people are in the water swimming around and body boarding, so people have the opportunity to spend time in the water. more and more people are gathering, i suspect you are hoping for a big turnout on the beach? yes, we have our surf club for local children and also we hire out kit for people to spend time on the water. it will be a really good day. the sun rose this morning at about 5:40am and it will set just before 9pm so there are many hours to enjoy the sunshine for a perfect day on the beach. thank you very much. it looks beautiful and in regents park in london where catherine is and also expecting

people to leave their homes and come out in huge numbers central london? absolutely. there isn't a cloud in the sky in regent ‘s park at the moment. it is absolutely glorious and it has been busy this morning, mostly runners and dog walkers, but people who have come out early to wander around and soak this up. there is a sense people have a smile on theirfaces when there is a sense people have a smile on their faces when the weather is like this. it has been a busy weekend across parks and across the country. you can tell that, some of the litter bins are overflowing. it has been busy and they will be cleaned later on ready for the onslaught, as you say, of people who will enjoy this fabulous weather today. it could be a record—breaking day, record—breaking temperatures for the early morning may monday bank holiday. i didn't realise, that holiday only came in in 1978. the

hottest temperature so far has been 23.6 celsius in 1999 and today that is not just rising 23.6 celsius in 1999 and today that is notjust rising slightly, it is going to smash that, 28 celsius in certain places. probably west london we will see the highest temperatures today but the early 20s to mid 20s across the midlands, in parks across east anglia and scotland and northern ireland enjoying 18, 19 degrees possibly. so hot enough to sunbathe and i can tell you, lotta people this morning, including some of the crew, already in their shorts. not sure if that is a nice thought or not. but thank you very much from beautiful regent ‘s park in london. pubs and hotels will struggle to employ enough staff, if eu nationals are no longer allowed to work freely in the uk. that's the stark warning from the recruitment and employment confederation, who says the hospitality industry is in crisis. it's calling on the government to allow eu workers to still come to britain after brexit. our business correspondent joe lynam reports. the bingham is a prestigious hotel and restaurant in london. 70% of its highly trained staff are eu nationals,

and its french manager is very worried about what will happen when britain leaves the single market. i think it's going to be hugely difficult to get the quality of the people i have right now, going forward, because obviously the english people don't see hospitality as a career, and therefore we will have slightly less—skilled, if i may say, people. the hospitality sector is the fourth—biggest employer, with three million people working in pubs, restaurants and hotels. 14% are from the eu, while in london it is much higher. workers in pubs and hotels are officially considered low—skilled, and recruiters say that employers should do more to encourage british workers to consider hospitality as a career. so one of our messages to government is, at some point, we need to think carefully about how we promote the uk as a good place to come and live and work.

so the debate can't be just about coming people we will let in — so what's our proposition to people so that they want to come and live in the work in the uk, because in sectors like hospitality we need them. the government said it has commissioned advice to better understand the reliance of eu migrant workers across the economy, and would work closely with the hospitality industry to consider their needs. joe lynam, bbc news. the headlines on bbc news: more police officers are being deployed in london today, after four shootings in just 2a hours leave one teenager dead and three injured. vladimir putin is to be sworn in for a fourth term as president of russia, marking 18 years in power. more than 1,000 protestors have been arrested over the weekend. president trump is being warned by the foreign secretary, borisjohnson, that pulling out of the iran nuclear deal could lead to a middle east arms race. sport now, and for a full round up, from the bbc

sport centre, here's hugh. good morning. manchester city manager pep guardiola believes their goalless draw with huddersfield yesterday shows just how hard it will be for his side to win the premier league title again next season. city held the trophy aloft in front of their fans at the etihad stadium yesterday, with guardiola now winning league titles in spain, germany and england. victory for city in both of their final two games will give them an unprecendented 100—point total. we cannot deny it would be nice but it's nice when we win the premier league, that's the most important thing. but, you know, we spoke about that. this target helps us to maintain, to focus on what you have to do. well wishes from across football continue to pour in for the former manchester united manager sir alex ferguson who underwent emergency

surgery on a brain haemorrhage on saturday. ferguson remains in intensive care in salford and there has been no new update on his condition. brian kidd, now with manchester city, was ferguson's former assistant at old trafford. you really think sir alex is indestructible, we have all been brought up with him. and again, what he did with manchester united, it's unreal. and the pressure that he was under every day to produce, it is phenomenal. and obviously all of us at manchester city, he is in our prayers and thoughts, with cathy and her kids, we wish him speedy and healthy recovery. arsene wenger sent ferguson his best wishes during the opening remarks of his farewell speech at the emirates stadium. after his arsnenal side beat burnley 5—0 in his last home match in charge. wenger received a gold premier league trophy to mark their invicibles season

and was given a vintage bottle of wine from that same year — 2004 — byjournalists at his post match press conference. applause he forced me now to say i will miss you as well. but i did want to say i wish you well and we will see each other again at big tournaments starting in russia next month. it has been a pleasure... not always. mark williams could become the oldest winner of the world snooker championship in a0 years. he holds a 10—7 lead overjohn higgins — himself chasing a fifth world title. williams took the final three frames last night. first to 18 wins. they resume at 2pm. you can follow it all on bbc two and bbc sport website and app. good news forjohanna konta — the british number one had only won eight matches this season prior to the madrid open and had lost her last three matches on clay.

but produced an impressive performance to knock out magdalena rybarikova in straight sets in the opening round. in the men's draw today, novak djokovic and kei nishikori meet unseasonably early after their rankings haven't given them a first round bye. australia's jason day won his second pga tour title of the year with a two—shot victory at the wells fargo championship. after squandering a three—shot lead on the back nine, the former world number one made amends with back—to—back birdies late on sunday. they included this near hole—in—one on the 17th. england's paul casey was the highest placed brit, five shots futher back. that's all the sport for now. we will have more in the next hour. thank you very much. the sun is shining, it's a bank holiday monday so what better way to enjoy the glorious weather than a stroll in the park. invaluable leisure time, you might think. or is it? a new report from the charity fields

in trust, has put a financial value on the amount of enjoyment we get from green spaces, as part of a project to preserve our parks. simon jones has been finding out more. park left, somewhere to unwind, brive, run and play but there are fears cash—strapped councils could increase if the give up their green spacesin increase if the give up their green spaces in favour of development. being in the park gives you a chance to be out in the open, it makes you feel calm and relaxed. the first time i've been to a park in a year. what do you think? it isjust nice to command and escape your hectic life. it is nice to come out of hospital, just escape. you might say it is not rocket science to say coming to the park, enjoying greenery and getting away from it all is going to leave you feeling better both physically and mentally but now experts are trying to put an actual value on it. the charity

fields in trust says using methodology approved by the treasury to measure well—being, it has kudla did that people would need to spend £974 year to achieve the same level of satisfaction they get from parks if they were not there. multiply that by the adult population and they say parks generate more than £34 billion of benefits. the ministry of communities has welcomed the research and says it wants to improve access to parks for everyone. if you are strolling through the park and with temperatures soaring you may be tempted to indulge in an ice cream or two. but if your favourite flavour is vanilla the price you pay for it could be about to rise. bad weather in madagascar, the world's top producer, has affected the harvest and is pushing up prices. our business reporter maryam moshiri has been to see how businesses are coping. cookie dough, chocolate brownie, creme brulee, whatever your favourite flavour, vanilla, the key ingredient for sweet treats is now, after saffron, the second most expensive spice in the world.

i have got some flavours for us to try. i've got honeycomb and original vanilla and a rum and raison. snugburys ice cream is run by three sisters in cheshire. really creamy. very good texture. the family's been churning ice cream for 30 years, but the cost of this key ingredient is starting to bite. yes, it has gone up. we decided to buy it forward and buy a year's worth. we had to make a decision as to whether we were going to absorb the costs, which we did in the end. in the future i think we willjust have to sit down, crunch the figures and see how it is going to work out for us in the years to come. the sisters insist they'll stick with the real thing. but other ice cream businesses are taking vanilla off the menu. so why has vanilla become such a valuable commodity? here at rhs wisley gardens, vanilla

orchids are grown inside a special glasshouse. but over 7596 of the world's vanilla grows in madagascar. vanilla is currently around $600 per kilo. the main reason for this is that there was a cyclone in madagascar last march which damaged a lot of the plantations and despite hopes that the price would have eased by now it's still on the high side, around those levels, and, in fact, this means it is higher than the price of silver. a highly prized and highly priced ingredients, as a result, only 1% of the flavouring in food comes from actual vanilla plants like these ones. and even though you might find it in sweet scented perfumes or candles, cakes, or even cocktails, do beware, because cheaper alternatives can be extracted from wood and even petrol.

it will take untiljune to find out how this year's vanilla harvest fares. the team at snugburys say they aren't passing on the cost to customers yet. they say the taste is worth it, whatever the price. maryam moshiri, bbc news. alina has the weather. hello. it's likely to be the warmest early may bank holiday on record but there are some exceptions to the warmth and the sunshine. more cloud for scotland and northern ireland, it will tend to thin and break, so some bright and sunny spells here save for the far northwest where we will see light and patchy rain at times. some mist and low cloud plaguing irish sea coasts, always that bit cooler for eastern coasts with a breeze off the sea. but in the sunshine, and there will be a good deal of it, widely between 23 and 26 celsius. locally up to 28 for south—east england. through this evening and overnight we keep clearer skies across central

and eastern areas, further west more cloud, some misty murkiness for wales and south—west england, the cloud thickening up across northern ireland later in the night, some outbreaks of rain by dawn, generally between nine and 14 celsius. tomorrow, still holding onto the warmth and the sunshine across central and eastern areas, further west more cloud, some outbreaks of rain, tending to fizzle out on its southern flank as it pushes its way eastwards but ahead of it we could see a few sharp showers, noticeably fresher across western areas, still holding onto the warmth south—east england. bye— bye. this is bbc news — our latest headlines. the metropolitan police is continuing to investigate four shootings injust 24 hours in london — which left one teenager dead and three others injured. vladimir putin is to be sworn in for a fourth term as president of russia shortly, marking 18 years in power. more than 1,000 protestors have been arrested at demonstrations over the weekend. president trump is being warned by the foreign secretary, borisjohnson, that pulling out of the iran nuclear deal could lead to a middle east arms race weather forecasters

are predicting that today could be the warmest early may bank holiday monday on record. temperatures in the midlands, east anglia and the south east could potentially climb to 28 degrees. now on bbc news — amazon explorers. in which a pioneering team of zoologists and botanists, in search of new creatures and plants, gets rare access to brazil's highest and most isolated mountain. this is one of the most important parts of the amazon to visit, to get genetic material. what's very interesting about this guy is the eyes. check it out. this is the first expedition we are doing with the help of the army, brazilian army, to an area that is absolutely

unexplored in the amazon. we're being led by army soldiers, who are members of local indigenous communities, so they grew up in this area, they know this forest, they know all these trails. we are running against the clock, we are running against the base of destruction that man is imposing on nature, so we have to do this kind ofjob because it's a heritage for the human kind. the pico de neblina, meaning peak of mist.

true to its name, it's shrouded in clouds, hidden from view. this is brazil's highest mountain, and reaching it is near impossible. sitting deep in the remote amazon, the national park, which is roughly half the size of switzerland, stretches across dense jungle. it's been closed to visitors since 2003, following a government decision to protect the area from uncontrolled tourism, and illegal mining. biodiversity here has been largely unknown to science. until now. for the first time, special access has been granted to a dream team of tropical experts. it's a mission of discovery. they are here to find new animal and plant species,

to find life that may be under threat from deforestation and climate change. we follow four professors and eight biologists from the university of sao paolo, a world leading institute in zoology.