this is the briefing. i'm sally bundock. our top story: fresh doubts about the future of the iran nuclear deal. the us says tehran lied and is still lying about a secret nuclear weapons programme. one of the most senior figures in the roman catholic church will stand trial over multiple historic allegations of sexual abuse. and the collapsing glacier which could raise sea levels by a metre. a warning for the world's low—lying regions. kicking the can down the road. trumps decision on trade tariffs is delayed for another month winning a temporary reprieve for europe, canada and mexico. also in business briefing: the chief executive of whatsapp says he is leaving the company as reports emerge of clashes with its parent company facebook. a warm welcome to the programme,

briefing you on all you need to know in global news, business and sport. and you can be part of the conversation. we are asking you about the central bankers whose view is the mood music from spotify can tell them how the economy will fair in the future, that's the chief economist at the bank of england. what do you think? just use #bbcthebriefing. let's get started. israel's prime minister, benjamin netanyahu, says he's spoken with the leaders of france and germany about intelligence on alleged iranian nuclear efforts. israel claimed it had news evidence showing iran covertly sought nuclear weapons, an accusation

rejected by iran. the us said israel's claims are consistent with its own intelligence. benjamin netanyahu's message was clear... iran lied. he said iran's government deceived the international community when it said it never wanted nuclear weapons, and he said israel had thousands of secret files and documents proving it. the project was a comprehensive programme to design, build and test nuclear weapons. we can also prove that iran is secretly storing project material to use at a time of its choice to

develop nuclear weapons. in 2015, iran agreed to curb what it's always maintained was a nuclear energy programme. in return, the us and five other international powers agreed to lift sanctions. the deal, passed under president obama, was hailed as historic, but israel has a lwa ys hailed as historic, but israel has always doubted the intentions of its enemy, iran, and now it seems america's new leader does too. i've been saying it's happening. they're not sitting back idly, they're setting off missiles, which they say for television purposes. i don't think so. the white house initially said israel's evidence shows iran has a clandestinely nuclear weapons programmes. it has since that to the past tense, saying it had. germany said there were clearly doubts about what iran was doing before the deal was signed, and that indeed that was

the reason for it. iran's foreign minister accused mr trump of jumping on old allegations in order to nex the deal. on a recent visit to israel the us secretary of state said america was willing to do just that, but their concerns were not addressed, a thread mr trump has repeatedly made. and with less than two weeks before he must decide whether to reimpose sanctions on iran, many are questioning the timing of israel's announcement. lebo diseko, bbc news. a story we will discuss in detail in the news briefing. and the bbc website will keep you up to date with the latest claim and counter claim between israel and iran over covert—weapons programmes. you”ll also find analysis of whether the current nuclear deal could collapse. that's all at bbc.com/news. one of the highest ranking roman catholics,

cardinal george pell, is to stand trial in australia over historic allegations of sexual abuse. the 76—year—old has pleaded not guilty to the allegations which stretch back more than a0 years. our correspondent, hywel griffith, is outside melbourne magistrates court, and joins me now. tell us about this case, extremely high profile and controversial? absolutely. cardinal pell arrived with dozens of cameras trained on him as he went into the court, he needed a police escort to make it through the doors. he isn'tjust the most senior catholic in australia but one of the most senior in the whole roman catholic church. returned from rome to australia a year ago saying he would come to clear his name —— he returned. it's taken this long for the courts to decide whether or not he should

stand trial. the magistrate listen to four weeks of evidence, some of it very harrowing, very detailed and stretching back to the 1970s, when he started as a priest in the town of balla rat he started as a priest in the town of ballarat and later in the 1990s was an archbishop here. over the course of 70 minutes she gave her rulings overall of those charges, around half were dismissed, she said there wasn't enough evidence for him to go before a jury. some of the most serious sexual assault charges have been dismissed. but, on the other charges, and they are numerous, he will now stand trial so for the hole 70 minutes he only spoke once. he was asked to enter a plea, he the us vice—president, mike pence, says weak and ineffective immigration laws are to blame for his country's current border crisis. mr pence said a convoy of central american migrants who've arrived in the mexican border town of tijuana — trying to enter the us — were victims of people smugglers, activists and the media. ashleyjudd is suing

harvey weinstein, claiming he damaged her acting career in retaliation for her rejecting his sexual advances. the actress was in the first group of women who came forward last year to accuse the film—maker of sexual misconduct. mr weinstein denies any wrongdoing. a minimum unit price for alcohol has come into force in scotland. the scottish government believes it will reduce the harm caused by excessive drinking, leading to fewer hospital admissions and alcohol—related deaths. high—strength white cider and cheap non—branded vodka and whisky will see the biggest price hikes. five supreme courtjudges in the uk will consider the case today of a bakery in belfast whose christian owners refused an order for a cake, decorated with a slogan supporting gay marriage. ashers baking company is challenging a judgement,

which found that it had discriminated against the customer on the grounds of his sexuality. the armenian parliament will vote for a new prime minister in a few hours. it follows a turbulent few weeks that have seen mass protests and the last prime minster‘s resignation. the man who led those protests, nikol pashinyan, is hoping to get the parliament's backing for thejob. rayhan demytrie reports from the capital, yerevan. this is a final protest ahead of a crucial vote in the armenian parliament. on may the first, all political factions will be voting for this country's next prime minister and is the leader of this protest, opposition mp nikol pashinyan, hoping to get the backing of all political parties. he's been leading this mass protest in armenia for over two weeks, and has successfully forced an unpopular

prime minister, former prime minister, out of power. he resigned but his party is still in parliament, it's the governing party, and these people are chanting nikol for prime minister. they believe he's the only politician in armenia at the moment who can oversee and guarantee this country can hold free and fair parliamentary elections. a diet rich in oily fish, such as salmon, could help delay the menopause, according to new research which drew on the data of thousands of women in the uk. the same study suggests that a pasta—heavy diet could hasten the onset of the menopause. ben ando has more details. hitting the menopause can cause tiredness, a lack of sleep and hot flushes. hrt can help but now there's some evidence that dietary factors may influence when the menopause occurs. researchers at leeds university recorded the diets of 14,000 women. four years later

they savita them again. by then, just over 900 had hit the menopause. they found some foods seemed to be linked to an early menopause while others could potentially delaet. the findings, the, published in the journal of epidemiology and health, said those eating refined carbohydrates like pasta, rice or white bread every day started the menopause 18 months earlier, while those who ate lots of salmon oar or pulses like peas and beans held it back by up to three years. there are other health implications too. an early menopause increases the risk of osteoporosis or heart disease, while a late menopause comes with the increased risk of cancer in the breasts, over is all women and medical experts say other factors, such as genetics, play an important role. and while these findings are interesting, it's far too early to say for sure changing your diet will have a definite impact on the timing of your menopause. ben ando, bbc

news. president trump has delayed a decision on whether to impose steel and aluminium tariffs on key trading partners. in march, the us imposed import tariffs of 25% on steel and 10% on aluminium on the grounds of national security. but the eu, canada and mexico were given a temporary exemption from the import taxes, the exemption was about to expire, but it's been extended untiljune. oliver cornock, editor in chief at the oxford business group joins me now. good to see you. trump delays decision on tariffs, emmanuel macron, fresh from washington, having had lots of chats with him, this came up on the agenda? absolutely, the fact the cam has been kicked further down the road, aluminium can, is good news for exporters from europe, canada and mexico. others have come to an

agreement. but it comes back to supply and demand. america and donald trump's protectionist policies towards its trade have time and again spoken about china dumping loads of cheaper products on the market. europe is a big exporter, although china produces it much cheaper, so it's cat and mouse. in the broader context, free trade has come under tons of pressure. looking at donald trump's attitude towards nafta, mexico and canada are part of nafta, mexico and canada are part of nafta, still being renegotiated, and it comes back time and again to is free trade good? i happen to believe it is, we at oxford business group are pro— free trade, therefore one hopes they will be a sensible agreement. nobody wants to see dumping but no one wants to see prohibitive tariffs that will damage america as well. we will discuss this and other stories in the news

briefing and more in business briefing. stay with us on the briefing. also on the programme: every publication from over three centuries inside cambridge's remarkable book repository. nothing, it seems, was too big to withstand the force of the tornado. the extent of the devastation will lead to renewed calls for government help to build better housing. internationally, there have already been protests. sweden says it received no warning of the accident. indeed, the russians at first denied anything had gone wrong. only when radioactive levels started to increase outside russia were they forced to admit the accident. for the mujahideen, the mood here is of great celebration. this is the end of a 12—year war for them.

they've taken the capital, which they have fighting for for so long. it was 7am in the morning, the day when power began to pass from the minority to the majority, when africa, after 300 years, reclaimed its last white colony. you're watching the briefing. our headlines: the us says iran lied and is still lying about a secret nuclear weapons programme, raising fresh doubts about the future of the 2015 nuclear deal. cardinal george pell will stand trial over historical allegations of sexual abuse. according to a ruling by an australian court. he's rejected the accusations. a huge antartic glacier, which could collapse within decades, causing a rapid rise in sea levels, will be the subject of a major new research project.

scientists say the thwaites glacier is losing around 50 billion tonnes of ice every year. our science editor, david shukman, reports. antarctica is changing. scientists capture the moment that vast chunks of ice break into the ocean. there is so much ice here that, even ifjust some of it melts, sea levels will rise around the world. so the urgent question is how rapidly the glaciers, the great streams of ice, are moving. satellite pictures already reveal that one of the biggest of them, thwaites, is shedding huge blocks of ice. if the whole lot went, the sea would end up nearly a metre higher. this matters for the millions of people who depend on sea defences to keep them safe, from the thames barrier in london to walls of mud in bangladesh. the key is predicting how fast the sea will rise. we found, definitely, a place that really could uncork the genie, in terms of sea level rise, at a much shorter timescale than has been talked about before. things that would really make it difficult for coastal planners, cities, countries, to react fast enough. this latest research will focus

on the western edge of antarctica, where the massive thwaites glacier, one of the largest on the planet, flows into the ocean. now, scientists already know that warm seawater is working its way under the front of the ice, melting it from underneath. but they don't yet know whether the ice will totally collapse and raise sea levels. so, over the next five years, they will be measuring the ice from the air, checking the glacier‘s thickness by drilling into it from the surface, and also using robot submarines to explore what is happening to the ice underwater. the submarines will be venturing into a hazardous world, but what they find out will help improve the forecasts for the future of the sea level. professor karen heywood is leading one of the teams that will deploy the subs.

it's going to be very scary for us. we're going to be very nervous when we send it under the thwaites glacier for the first time. we will be crossing our fingers that it comes back safely. but it's thrilling, as a scientist, to get data from somewhere that nobody‘s ever measured before. but conditions will be unbelievably tough. the glacier couldn't be more remote. getting scientists there will involve one of the largest operations ever mounted in antarctica, and the teams camping on the glacier will have to endure notorious weather. but, if they can help predict the rise of the oceans, they say it's worth it. david shukman, bbc news. here's our briefing on some of the key events happening later. now it's time to get all the latest from the bbc sports centre. the champions league returns. is it

bayern's time? and the refs getting a taste of their own medicine. 90 minutes separate bayern munich and real madrid from a place in the final. they go head—to—head in madrid on tuesday. real have the upper hand. real scored either side of half time taking a step towards the final in kiev with the away goal. translation: bayern munich will not be worried. they will come to play a great game. they are great cloud and team. we are well aware of that. we have to be ready like never before. —— club. that. we have to be ready like never

before. -- club. we played well in the competition and now we need to do it in the biggest game. we have to manage the moment really well. that is the art of great teams and players. if we can do that we will achieve what we need to. one game in the english premier league on monday with hot spur giving themselves breathing room against watford. dele alli had the open after 16 minutes before harry kane got here is 38th goal in all competition this season. -- his. goal in all competition this season. —— his. tottenham could perhaps even start looking up the table, finding themselves one point behind third placed liverpool with a game in hand. all three points for us was

massive. it was a game that we needed to win, and we won the game, and i'm happy for that. of course, perhaps the performance was not great. the chinese superstar din hue is through at the crucible in the snooker. never troubled by mcgill. 1-0. snooker. never troubled by mcgill. 1—0. used to playing under pressure. half a million people back home tune infor half a million people back home tune in for his matches. a look at what caught our eye on social media. a moment every football fan secretly hopes happens to them, giving a

referee the taste of his own medicine. look at the match in the eredivisie. the referee ludicrously believes he has been clipped and ta kes a believes he has been clipped and takes a frankly pretty pathetic dive. the players are not to be fooled by such play acting. he produced the yellow card. at half—time, fc were relegated. you can get the latest news on the website which is on your screen. from me and the rest of the team, thatis from me and the rest of the team, that is your sport briefing. for nearly 100 years, cambridge university's library tower has been closed to the public and shrouded in mystery, sparking rumours and tall tales among students about what treasures may be housed within it. but now the tower‘s secrets are to be revealed to the public for the first time, as tim muffett explains. this is an uplifting story. it is

about a building that dominates the cambridge skyline and which contains one of the world's newsroom a cobble collection of books. hello. welcome to the tower. 140 feet above cambridge city centre. it has close toa cambridge city centre. it has close to a million books. since 1710, the cambridge university library has by law received a copy of every book published in the uk, but many were not deemed to be of academic interest, so a tower was built to house them where they could be stored and largely ignored. it was built in 1934 designed byjosh thomas scott who is better known for the red telephone box we do not make a judgement over whether it is

interesting. it was published and we acquired it. there is a mad diversity, trigonometry, storybooks, naval battles. a book about life insurance, field sanitation, a pamphlet arguing about whether we should have the channel tunnel in 1914. a new exhibition allows rare access to visitors to the tower to see some of the collection close—up. this is a first edition of tolkien's hobbit from 1937. initially it was not that important, just put it in the tower. one of the many thousands that came to the tower that year. ian fleming's first james that came to the tower that year. ian fleming's firstjames bond book, casino royale. it is hoped the exhibition will finally be dispelling one long—standing rumour. the most famous myth is it is

stuffed to the roof with victorian pornography. this is not true. but by law we have a copy of every book published for the last 300 years, whether that is knitting, train—spotting, oracademic whether that is knitting, train—spotting, or academic books by hawking, we acquire it and hold it for the long—term. the latest chapter for for the long—term. the latest chapterfor a for the long—term. the latest chapter for a remarkable building. tim muffett, bbc news. stay with us here on bbc news. so much more to come. we will have analysis on donald trump's decision on free trade with mexico and canada to see if tariffs will be imposed. we would like your views on whether central bankers should look at your playlist on spotify when deciding on interest rates. please get in touch. we will

see you soon. rates. please get in touch. we will see you soon. goodbye. good morning. it's the first of may and so our thoughts are turning towards the bank holiday weekend and what we could do with some he dry sunny weather. just take a look at east lothian yesterday, a beautiful day. by contrast, though, miserable i'm afraid across the kent coast where we had a month's worth of rain injust a 24—hour period and 50mph gusts of wind. the ridge of high pressure is quietening things down but it does mean a chilly start to tuesday morning. we could see temperatures below freezing in sheltered rural parts of scotland yet again. so you'll need couple of extra layers yet again first thing if you're up and off early on. but it will be quite a quiet start. a good deal of dry weather to begin with at least. a much better day across eastern areas in comparison to yesterday

but eventually the cloud will start to gather. the winds strengthen as we see a frontal system bringing rain by the middle of the afternoon to northern ireland and western scotland, eventually into western fringes as well. top temperatures here, 9—10 degrees but a lot warmer in the south—east, 15 degrees. we should keep some sunshine into the afternoon. as we go out of to tuesday to wednesday, that weather front will continue to squeeze its way steadily eastwards. it will bring rain with it as well to start off across england and wales, just confining itself to eastern england by the end of the afternoon.. the wind swinging around to a north—westerly, never a warm direction. 9—12 degrees. those temperatures disappointing for the early half of may. but signs of high pressure is starting to build into the south—west. before that, this little weather front could bring showery outbreaks of rain into northern ireland and maybe western fringes of scotland. a lot of dry weather on thursday, albeit quite cloudy looking skies. highest values around 11—16 degrees. as we move out of thursday, we'll start to see things turning a little bit warmer with the high pressure starting to exert its influence. the wind swinging around to a south—westerly, driving this warmer air

across the country so as we move towards the bank holiday weekend, dare i say it, it's looking promising. a good deal of dry weather in the forecast and temperatures should peak into the low 20s. enjoy. this is business briefing. i'm sally bundock. kicking the can down the road. trump's decision on trade tariffs is delayed for another month winning a temporary reprieve for europe, canada and mexico. and we'll be in california, where thousands of facebook software developers are gathering, with many anxious about the fallout from the firm's privacy scandal. and on the markets, japan is open again but under pressure due to disappointing forecasts from sony and honda, electronics and banking stocks among the biggest losers. a fairly flat day, though.