welcome to bbc news, broadcasting to viewers in north america and around the globe. my name is mike embley. our top stories: the us delays restrictions on huawei as the chinese tech company claims google‘s actions against it are based on politics and not security. they're citing this as being a security issue and it absolutely is not a security issue. this is all tied to the china—us trade negotiations. scientists warn sea levels could rise twice the level predicted, because of accelerated melting in greenland and antarctica. president trump tells his former legal adviser — don mcgahn — not to appear before congress to testify about the mueller report. ministers of the far—right freedom party resign from austria's government in the continued fallout

from a corruption scandal. and young british royals enjoy a woodland wilderness at the chelsea flower show, designed by their mother. but first as we go to air let's bring you some breaking news — the 3—time motor racing world champion niki lauda has died aged 70. the austrian formula 1 legend immortalised in the film rush who was horrendously burned in a crash but survived and become an airline entrepreneur, died eight months after a lung transplant. we'll bring you more on this later. the us government has eased some of the restrictions imposed last week on the chinese tech firm huawei. it means service and support will continue for existing phones,

although huawei is still prohibited from buying american parts and components. this global business dispute, coupled with trade tensions and national security concerns, has all been underlined by falls in us stocks. our business editor, simonjack reports. a global trade war is coming to a phone near you. google has barred the chinese smartphone maker huawei from some updates to the android operating system. the ban means that future huawei phones won't be able to access popular apps such as youtube and google maps. existing phones will have access but won't be able to update to new versions of android, which could leave users more vulnerable to future security threats. so, what do potential customers make of that? so, if you were looking at phones and one of them came without youtube, you couldn't get youtube, you would rule that out? straightaway. straightaway i'm ruling that out. everything's at the tip of our fingertips so if something like maps wasn't available, it would make... it would seem more difficult.

today, a huawei spokesman admitted future access to some popular apps couldn't be guaranteed. it's just a question of what's going to happen in the future with updates and we're at this stage not quite sure how that is going to pan out. but in the fullness of time, we'll be more sure. is this a security issue, or is this a trade war? it absolutely is not a security issue, this is all tied to the china—us trade negotiations, and i've every hope and every expectation that this will come to a rapid conclusion. not everyone agrees. huawei is the world's biggest manufacturer of the network equipment that promises to connect hospitals, power stations, driverless cars, and having a chinese company at the centre of that is a concern for some. security concerns first raised in the us and echoed by spy chiefs at mi6 have arguably made huawei the most important company in the world, thrust onto the front—line of a new technological and economic cold war, a cold war that's coming out

of the security shadows and into our everyday lives. is this another move in a game of chess between china and the us? huawei thinks so and hopes that the tit—for—tat trade war will ultimately be resolved. but the red flag of national defence is a hard one to lower. once you start to raise concerns about security, it's much easier to sow doubt than it is to rebuild trust. these are very complex devices, complex software, and it's almost impossible to know what they're doing in every possible scenario. the us, along with australia and new zealand, have already shut huawei out of their future network plans. the uk hasn't made up its mind yet. when the world's two biggest economies are at each other‘s throats, other governments and now consumers can get caught in the middle. simon jack, bbc news. so what does this delay mean for huawei? our tech correspondent dave lee in san francisco explains.

this move has scaled back a few of the restrictions announced by the us commerce department last week, but it has certainly not made the problem go away. huawei has been granted a temporary license to buy american—made goods. but only for existing uses such as maintaining networks or providing software updates to huawei smartphones. it will last for just 90 days, however, after that a full block will come into place — a block that threatens to completely destabilise huawei's ability to do business nutjust in the us, but globally. it can also prove extremely damaging to major us firms such as intel, qualcomm, broadcom and other chip and technology providers to the chinese giant. when huawei provided a list of its top global suppliers, 33 were american firms. they stand to lose billions of dollars if this ban is enforced in full. us intelligence agencies say such

drastic moves are necessary to protect national security. china argues it's a plot to pile on the pressure during ongoing trade talks. either way, companies in both countries are set to get hit hard. dave lee, bbc news in san francisco. a new assessment by a group of senior scientists suggests climate change could trigger a rise in sea levels far higher than previously predicted. the scientists took evidence from 22 leading researchers about the acceleration in the melting of the greenland and antarctic ice sheets. the worst—case scenario has long been that the world's seas would rise by a maximum ofjust under a metre by 2100. but the new study projects that the true level may be more than double that figure if carbon emissions go unchecked and cause the world to warm by five degrees celsius rather than the two degrees envisaged in the paris climate change agreement. in theory, such a rise in sea levels would endanger many cities and possibly submerge much of bangladesh and the nile valley. i spoke to one of the senior

scientists involved in the report, professor michael oppenheimer, from the department of geosciences at princeton. it's not like all of a sudden it is going to submerge entire cities, it will just sort of start cutting away at significant parts of them. and, you know, for instance, lower manhattan, unless they build defences, a good chunk of that would be underwater, yes. bangladesh, they are very good at protecting themselves and they would have to get structures built fast. there are lots of places around the world that aren't as wealthy as europe or the us that would not have the resources to deal with this. this is a situation we have to avoid, i don't want to say at all costs, but we have to avoid it as a top priority of governments. even the way you describe it, can it be avoided? yes, the high emissions outcome can certainly be avoided.

there's no question we are going to get more sea level rise because we've got more warming in the pipeline and there are large lags in the climate system, so even with diligent efforts, sea levels are going to be higher over the long—term than it is today. but there is a great deal of difference between being modestly higher and countries, cities, people being able to adjust because they have time or climate change sea level rising so fast because of emissions being so high that it overwhelms our ability to adapt, except perhaps in areas which are settled by people who have lots of resources, where the governments really have their act together in terms of adaptation to mitigate what could be so severe. this is something that has to be

avoided by cutting emissions fast. professor, why is your assessment so much more serious than the previous worst—case scenarios? is this as we learn more about the way ice sheets respond to warming? the previous assessment you mentioned is the ipcc, intergovernmental panel on climate change assessment from 2013. six years of science have developed in the meantime and in addition there have been additional papers suggesting that sea levels could rise that high if there was a high—emissions scenario like that. the difference is this is the first real assessment by a group of experts, a significantly—sized group of experts, who got together and thought about everything that is in all those papers plus all the observations, notjust the modelling and projections, but observations, so what is actually happening. plus, they have high expert

knowledge of ice physics in general. so when you put that altogether — plus, when we also have a fairly advanced way of weighting their opinions, so it's a different type of assessment to what ipcc does. it takes advantage of years of new science in the meantime and takes a sharp new look at the problem. unfortunately, the answers aren't very encouraging. you can find lots more coverage of climate change on our website, including this report about ice thinning in antarctica. that's all at bbc.com/news or you can download the bbc news app. now more on our breaking news this hour — the 3—time formula one motor racing world champion, niki lauda, has died at the age of 70. the austrian took the title for ferrari in 1975 and 1977, and for mclaren in 1984. a family statement said "he died peacefully with them by his side." lauda was badly burned in a crash in the 1976 german grand prix. he recovered and returned to racing, but struggled with health problems. joe wilson reports. niki lauda

excelled and somehow survived. he defied his wealthy family's orders to bea defied his wealthy family's orders to be a racing driver as ferrari dominated formula 1. more glory seemed certain. this was his car at the 1976 german grand prix. other drivers rescued him from the wreckage. this was lauda six weeks later, wounds barely healed but ready to race again. doctors predicted he would die from lung damage. he pushed himself. when that feeling came, i was really worried and frightened that i was going to die. but then i kept going, you can't start your body, you can only start the brain. if you hear voices you can only ask why. for example, names. why is he here? things to

keep the brain working and if the brain works, the body starts to work stop in 1977 he was world champion again. the championship was's, enough to regain the world title. staggering feat. acknowledged by the bbc. niki lauda wins the bbc trophy for outstanding personality of the year. lauda was champion driver again in 1984, year. lauda was champion driver again in198a, a year. lauda was champion driver again in 1984, a victory for mclaren to go with the two titles he won for ferrari. later, he held managerial roles in formula 1, notably at mercedes. niki lauda lived to inspire new generations in sport which so nearly claimed his life

decades before —— in a sport. niki lauda who has died. let's get some of the day's other news. the world food programme in yemen has warned that it could be forced to suspend aid to millions of people on the brink of starvation. the un organisation accused some houthi rebel leaders who control many areas of yemen of repeatedly obstructing food distribution. an appeals court in paris has ordered doctors to resume life support for a quadriplegic frenchman, only hours after medics began withdrawing treatment. his family are in dispute over what should happen. vincent lambert, who's 42, has been in a vegetative state since a motorcycle accident in 2008. severe storms with tornadoes and heavy rains took have hit parts of oklahoma and texas and it looks like more to come. the us national weather service has issued a rare ‘high' warning for parts of those states.

over the weekend, severe storms and tornadoes affected central areas. much more to come for you on bbc news. including this: a special preview of the the chelsea flower show and the exhibition co—designed by kate. this morning an indian air force plane carrying mr gandhi's body landed in delhi. the president of india walked to the plane to solemnly witness mr gandhi's final return from the political battlefield. ireland has voted overwhelmingly in favour of gay marriage. in doing so it has become the first country in the world to approve the change in a national referendum. it was a remarkable climax to what was surely the most extraordinary funeral ever given to a pop singer. it has been a peaceful funeral demonstration so far but suddenly the police are tear gassing the crowd. we don't yet know why. the pre—launch ritual is well established here. helen was said to be in good spirits butjust a little apprehensive. in the last hour, east timor has

become the world's newest nation. it was a bloody birth for a poor country and the challenges ahead are daunting. but for now, at least, it is time to celebrate. this is bbc news. the latest headlines: the us has delayed restrictions on china's telecoms company huawei, as the company claims google's actions against it are based on politics and not security. and the former motor racing driver niki lauda has died at the age of 70. let's get more now on our top story: michael hirson, director for china and north—east asia at eurasia group, joins me now from new york. how significant are these potential

sanctions for huawei, and what does the delay mean, do you think? well, the delay mean, do you think? well, the sanctions are hugely significant. these really restrict the ability of us suppliers, whether thatis the ability of us suppliers, whether that is semiconductor makers or softwa re that is semiconductor makers or software companies like google, to supply huawei with needed parts. so if this plan is implemented in full, it really will have a crippling effect on huawei over time. do you think it will be, or do you think a lot of it, as huawei suggests, is actually a negotiating tactic in the trade dispute? well, there are probably a number of motivations of the us side. i don't think that trade is really the key factor. this is really more part of the broader campaign by the us to limit huawei's role, especially in the rollout of the sg role, especially in the rollout of the 5g wireless networks globally, including us allies in europe and the uk. and this had originally been

a quite aggressive diplomatic push by the us to these countries, and the us was encountering resistance. and then comes this listing of huawei on the entity list. it's essentially forcing the hand of carriers and governments around the world and saying, look, huawei may not be a stable provider of equipment to you, because we have put this plan in place. how do you think huawei and the chinese government might respond? —— ban. well, i think the response on the pa rt well, i think the response on the part of the chinese government is likely to be measured, at least at first. you mentioned these temporary general license that the us announced this week, which means that us suppliers can continue to supply huawei for the time being, although in a quite limited sense.

the chinese government is going to be watching to see how this is implement it. i think they are going to not move too rashly, because they realise that huawei is in a very vulnerable position here. likewise, the company will try to see whether there is room for negotiation. and just to be clear, the restrictions introduced by google, do they still apply even though the commerce department ban has been held off? well, i think that there's a lot of complexity here, that the individual companies are going to need to sort with their general counsel ‘s and with their general counsel ‘s and with their general counsel ‘s and with the us congress department. so i don't want to be overly definitive about the choices that any single supplier is making, because this is quite a novel regime that the us has put in place, and it will be specific about what kinds of activities suppliers can support.

specific about what kinds of activities suppliers can supportlj think we're losing the connection with you, thank you very much indeed for that. president trump has directed one of his former legal advisers, don mcgahn, not to appear before a congressional committee. democrats wanted to question the former white house counsel about whether mr trump illegally obstructed robert mueller‘s investigation into russian interference in the 2016 election. the mueller report includes accounts of phone calls in which, it is alleged, the president orders mr mcgahn to have him sacked. earlier, our north america correspondent peter bowes explained why mr mcgahn might not want to appear before congress. don mcgahn is currently following the white house line. he is taking their advice that he has essentially constitutional immunity from testifying before this committee. now, another reason that people are putting forward is that, of course, he no longer works for the white house. he left hisjob in october.

he now works in private practice for a law firm that has close connections with the trump re—election campaign, it's been employed by them. but there are now reports that the trump re—election campaign is employing an in—house lawyer, taking business away from them. and there is some speculation that could be a form of punishment for what don mcgahn had to say in the mueller investigation. he was a key witness for mueller. he was with interviewed and cited some 30 times. the democrats want to get to the bottom of this question of whether donald trump did try to impede the investigation and put any pressure on mr mcgahn to fire mr mueller. so there are many questions that the democrats want to get to the bottom of, and the key question is, if mr mcgahn doesn't appear before the committee, well, what next? he could be held in contempt.

and this is an issue that we've seen coming up before, but quite recently between the deputy branch and congress, and if that is the case, well, it could be another battle that goes to the courts. something which could drag on for many months. thousands of fishermen in bangladesh say they are planning to protest against a new government ban on sea fishing. the 65—day ban covers local fishermen as well as commercial trawlers. fishing communities are angry that there has been no offer of compensation. they argue they have no other way of earning a living. officials say the halt is needed to replenish dwindling fish stocks. health officials in the united states say the country is experiencing the worst outbreak of measles for 25 years. the centers for disease control and prevention recorded 41 cases of measles in the us last week, bringing the total to nearly 900 this year. officials blame its return on the spread of misinformation about vaccines. chicago has sworn in the city's first african—american female and openly gay mayor.

at the ceremony, former federal prosecutor lori lightfoot vowed to tackle chicago's dangerous streets, weak finances and allegations of corruption. the new mayor faces a $252 million budget deficit for 2020. nearly 170,000 people are expected at this year's chelsea flower show, which begins in london this week. one garden, including a tree house, a stream and waterfalls, was partly designed by the duchess of cambridge to promote the mental and physical benefits of the natural world. she has already taken her children, prince george, princess charlotte and prince louis, to see her work. our royal correspondent daniela relph reports. who better tojudge mum's handiwork than her three young children? george, charlotte and louis testing out the garden the duchess helped create. louis seemed a little distracted, but from george, there was high praise. what would you give it out of ten, george? how many marks out of ten would you give it, ten being the highest? 20. 20 out of ten? ok, that's pretty good.

i think mummy‘s done well. how amazing is that? have you been on here? give me a push. in recent months, the cambridge children have collected twigs, leaves and moss that were included in the design. it has been a very personal project for the duchess. rarely interviewed, on this, she wanted to speak out. you know, there's so much that kiddies particularly can learn from environments like this. they can learn life skills. you know, anything from sort of lending empathy, from watching plants grow, to sort of physical activities and sort of climbing onto trees or onto boulders and things, sort of helps with balance and co—ordination. it's really a sort of open playground for them. it's a natural space, a really exciting space for kiddies and adults alike to share and explore, and hopefully that's what this garden brings. this is a garden filled with personal touches.

the duke of cambridge chose a pine because he remembered the smell as a young boy. and there are also forget—me—nots, the favourite flower of his mother, diana, princess of wales. two local primary schools were first into the garden this morning, under the watchful eye of the duchess. oh, my goodness, there's so many people up here! she climbed into the treehouse to chat, and even had to explain to curious minds that she would normally wear gardening gloves to protect her hands and her engagement ring. what have you been doing, lots of planting? this evening, the duchess of cambridge showed the queen around the garden, and it may have looked familiar to her, as much of it was inspired by her own sandringham estate in norfolk. daniela relph, bbc news, at the chelsea flower show. the series finale of game of thrones has drawn record viewing figures, according to hbo. around 19.3 million viewers in the us tuned in to the final

episode on sunday. hbo said sunday's live television audience and viewers on its apps exceeded the previous series high of 18.4 million for the penultimate episode a week ago. the series, which began in 2011, is set among warring families in the fictional kingdom of westeros, and is hbo's biggest hit. three—time world motor racing champion niki lauda has died. he took titles for ferrari in 1977 and four mclaren later. there was a statement from his family as he died peacefully by their side. he was badly burned in a crash in the 1976 german grand prix. he recovered and returned to racing but struggled with health problems. he became an airline entrepreneur and died eight months after having a lung transplant. and austria's far—right

freedom party has seen all its ministers resign after a corruption scandal involving its disgraced leader. a snap election has now been called by the chancellor. thank you for watching. hello there. we've had some interesting clouds sent in to us here at the bbc weather centre over recent days. this was monday's effort from cardiff. it's a funnel cloud, a tornado that doesn't quite reach its way all the way down to the ground. and what about this beauty from sunday, from the north yorkshire area. but what if the atmosphere had 25 times more energy built up in it, ready to be released in one violent outbreak? well, that's what we've got going on across parts of the united states at the moment, through texas and oklahoma. these storm clouds have already produced some tornadoes, and there is the potential for some of these tornadoes to become violent, wide, and have a long track along the ground. so some extreme weather there across the united states. here in the uk, though, over the next few hours,

expect a little bit more rain to come in. scotland, some damp weather here. otherwise, it's a largely dry picture. but again, it's quite murky around some of our eastern coasts, with some mist and fog patches particularly again for eastern areas of scotland. so for tuesday morning, for many of us, a decent start to the day. the winds should be light and there should be plenty of sunshine around across northern ireland, for most of england and wales. and increasingly, we'll see the skies brighten up in scotland as well. but, as that process happens, the rain eases, we'll start to see some showers breaking out, and they could turn heavy and thundery. maybe a few showers as well getting going across eastern england. otherwise it's dry and in any sunshine, it should feel pleasantly warm, given the light winds. it's a similar day for many of us on wednesday. again, a lot of drier weather around, with some sunshine, but there will be some thicker cloud working into northern scotland, particularly the northern isles, with some rain and cool weather. temperaturesjust ten in lerwick. we might see some of that rain getting into aberdeenshire as well. but elsewhere, a similar kind of weather prospect.

a few isolated showers, but it's mainly dry with some sunshine. so, the next few days, feeling warm in any sunshine. a few slow—moving showers are possible and the winds are going to stay light. but subtle signs of something of a change as we head towards thursday. we've got a weather system lurking in the atlantic, and there is a chance that we could see some of the rain brushing into western areas. a little bit of uncertainty about that, but for many of us, i think there'll be a little bit more in the way of high cloud in the sky, making any sunshine hazy. quite warm again, though — temperatures high—teens to low 20s fairly widely. now, on into friday and the weekend, it looks like the jetstream is going to start moving straight across the uk, and that will tend to encourage outbreaks of rain, particularly across northern areas, so we could see some rain at times. some uncertainty in the details of the rain. it will probably turn cloudier and breezier, though, through the weekend. that's your weather.

this is bbc news. the headlines: the three—time formula 1 world champion, the austrian niki lauda, has died at the age of 70. he took the title for ferrari in 1975 and 1977, and for mclaren in 1984. a family statement said he died peacefully with them by his side. the us has delayed imposing restrictions on exports to the chinese telecoms company huawei for three months to help existing customers. the commerce department has temporarily restored huawei's ability to maintain its networks and provide software updates. google said it will no longer service the android operating systems in huawei devices. scientists say global sea levels could rise far more than predicted due to accelerating melting in greenland and antarctica. a new study projects that the real level may be around two metres by 2100. the long held view has been that the rise would only be just under one metre.