i'm kasia madera with bbc news. our top story: venezuela's opposition leader juan guaido has returned to a superstar welcome in his country. he told the crowds who awaited his return at an anti—government protest that it was up to them to achieve i'm rico hizon in singapore. regime change in venezuela. the headlines: developments on the huawei case are causing major new tensions between canada, the us and china. venezuela's opposition leader makes a triumphant return to the capital, china accuses two canadians of spying, as a senior huawei caracas, and calls for more protests executive sues canada over her arrest. against president maduro. and this video is translation: they've threatened all trending on bbc.com: jacob easton and his dad of us, me too, with prison, death, were driving in colorado when they saw an avalanche rushing towards the highway. there are avalanche warnings andi of us, me too, with prison, death, and i say to you, despite the persecution, they will not stop us. in place across the state. tit—for—tat developments on huawei. that's all. china accuses two canadians of spying, as a senior huawei executive sues canada stay with bbc news. over her arrest. i'm kasia madera in london. also in the programme: a trail of destruction in america's deep south, and fears more bodies will be found after tornadoes kill at least 23 people in alabama. now on bbc news, hardtalk.

and, as bushfires rage on across australian states, we talk to a prominent winemaker on the economic impact. good morning. it is 8:00am in singapore, midnight in london and 8:00pm in the capital of venezuela, caracas, where thousands of people have welcomed the return of the man who claims to be the country's interim president. 0pposition leaderjuan guaido had been visiting countries in the region to get support for his bid to replace the current president, nicolas maduro. but now, mr guaido could face arrest, as the bbc‘s will grant in caracas reports.

juan guaido could have been arrested the moment he stepped off the flight. instead, he breezed back onto venezuelan soil, and into the arms of his supporters. for those who see him as their president, his return is an important step on the road to removing nicolas maduro from power. and, if the goal was to maintain their momentum, this was what greeted mr guaido‘s return. at the height of carnival, his appearance in caracas has lifted the spirits of his faithful. translation: they threatened all of us, including me, with jail, death, but we're not going to give up fighting. we are stronger and more united than ever. translation: the arrival of guaido to this country represents the awakening of hope among the venezuelan people. we've been waiting for this call.

this is exactly the reaction that mr guaido's supporters wanted to see from him — notjust returning to venezuela, but through the front door, and thumbing his nose at mr maduro and the travel ban on his way in. president maduro, meanwhile, spent the day insisting all was well, admiring the country's tourism infrastructure over the extended holiday. he sastuan guaido has acted illegally, and is trying to stage a coup. but he knows arresting him would bring an instant reaction, both on the streets of venezuela and from abroad. the trump administration has made no bones about its support for mr guaido. the national security adviser, john bolton, warned president maduro of swift retribution should anything happen to him. so the lines of the venezuelan conflict are drawn. now, the question most venezuelans are asking is if mr maduro will accept his opponent's return,

or arrest him in the coming days. will grant, bbc news, caracas. now some breaking news to bring you regarding the united states and india, because president trump is saying that he intends to end india's preferential trade treatment under a programme that allows $5.6 billion worth of indian exports to enter the united states duty—free. so it will be an end to that preferential trade treatment. we will have much more in abr about this, because this is a big development, and rico will talk us through the facts and figures, but thatis through the facts and figures, but that is an end to that preferential trade treatment india has with the united states. let's take a look at some of the day's other news: the chinese authorities say that two canadian citizens detained in december were engaged in stealing state secrets, and that the authorities are to startjudicial proceedings against them. they were arrested shortly after canada acted on a us request

to detain a top executive from the chinese telecom giant huawei. meng wanzhou is now suing the canadian authorities in relation to her arrest at vancouver airport last year. she faces charges linked to the alleged violation of us sanctions against iran, which she denies. china has condemned her arrest. translation: the us and canada abused their bilateral extradition treaties to arbitrarily take coercive measures on chinese citizens. we once again urge the us to immediately withdraw the arrest warrant and extradition requests. also making news today: president trump is under pressure from a democrat—led congressional commitee which has demanded documents from dozens of people, including his son donald jr, to examine allegations that the president obstructed justice and abused his powers. mr trump denies any wrongdoing. 200 foreign is fighters have surrendered to the us—backed kurdish—led syrian democratic forces in eastern syria. the group surrendered in the north of baghuz after the sdf announced a pause in the fighting to allow civilians to leave the area and any is fighters to surrender.

the american actor luke perry, who starred in the 1990s teen drama beverley hills, 90210, has died at the age of 52 after suffering a stroke last week. luke perry became a household name playing dylan in the hit series. he was taken to hospital last wednesday after becoming ill in la, where he had been filming new episodes of another series, riverdale. philippine police have seized more than 1,500 live turtles and tortoises found wrapped in duct tape at manila airport. the reptiles, found in four unclaimed pieces of luggage, could have sold for more than $85,000. police believe the bags were abandoned after the carrier found out about the harsh penalties for illegal wildlife trafficking. new research on sea temperatures has revealed that the frequency

of heatwaves in the ocean has risen by more than 50% since the early 20th century. the sudden heat spikes are a threat to sea life and coral. human activity is increasingly contributing to the ocean hot spots. thousands of dancers from rio de janeiro's elite samba schools are competing for the prestigious carnival title. the annual festival, filled with bright costumes and loud music, is taking place at a packed purpose—built stadium known as sambadrome in the nation's capital. the carnival, which marks the beginning of lent, is one of the biggest events on the brazilian calendar. the storms came with little warning, and left destruction in their path. officials say 23 people are confirmed dead and many remain missing a day after a series of tornadoes hit the american states of alabama and georgia, with winds topping 250 km/h.

eyewitness have called the scenes on the ground catastophic and like a warzone. the bbc‘s chris buckler was granted access to see the damage himself, and has this report. in this corner of alabama, the landscape is scarred by debris for as far as the eye can see. the tornadoes that struck you cut through homes and communities, leaving parts of destruction that are miles long and up to half a mile wide. looks almost as if someone took a giant knife and just scraped the ground. there are slabs where homes formerly stood. it is only when you are here where the tornado struck that you can see the force of it. everything that you can see lying just in front of me, this was inside a trailer on the other side of the road. but it has been thrown

across the road, and everything that was inside is now lying outside, even mattresses. and behind me, there are hundreds and hundreds of trees, or uprooted and lying on their side. a series of tornadoes insta ntly their side. a series of tornadoes instantly darken the skies on sunday afternoon across georgia, south carolina and florida, but it was alabama that was struck hardest. the tearing, swirling winds reached speeds of i65 tearing, swirling winds reached speeds of 165 mph, ripping roofs from houses. some people had only minutes of warning, and not everyone had the chance to escape. that's a sweet reunion, isn't it, right there. granny is ok. tornadoes are not uncommon in this part of the us, but the number of people killed by this storm stands out, particularly here in beauregard. this is a small community which has been ripped apart. there are children among the

dead. this hurts my heart. i love this county, and it's extremely upsetting to me to see these people hurting like this. today, teams are still searching through the remains of buildings, all too aware that there is a real possibility of finding more bodies. let's return to the situation in venezuela. the opposition leader, juan guaido, has returned to caracas. i spoke to ana vanessa herrero, a new york times reporter in the capital, and i asked her what was likely to happen next given that mr guaido been threatened with jail on his return. actually, the government of nicolas maduro was vacant since last week. it was the head of the constituent assembly said on a weekly show he

anchors, and also nicolas maduro had already threatened juan guaido with that, as well as the vice president. but this didn't happen. actually what happened was that grow one came to the country through the main airport of venezuela in a commercial flight airport of venezuela in a commercial flight from panama, with the help of the president of panama, and he was greeted as a chief of state inside of the airport. the airport that is actually controlled by military, by the national police, and he said over. . . the national police, and he said over... in his speech today that it was because of this military and the police and the security forces, who allowed him in. i mean, it was them who allowed him to get into the country. in saying that, you know, they were 0k country. in saying that, you know, they were ok with the fact that he was interim president. mr maduro is under incredible pressure to resign.

what do you think his next move will be? we are waiting to see exactly that. i mean, we are waiting to see what the next move is going to be, because usually when the opposition calls for a riau rally, the government, nicolas maduro's government, nicolas maduro's government immediately jumps and calls for a rally also. but the thing that happened that sunday was that it was so fast, it was so quickly announced and so not prepared that the government didn't have time to call the supporters that they still have with them. but juan guaido already called for another demonstration this saturday. we are hoping all we are waiting to see if the government is also going to call for another demonstration the same day. this week, the bbc is launching a new series of crossing divides, examining the causes of polarisation and fragmentation in the 21st century. among the biggest debates in today's society is whether social media

is a cause of division or a force for good. 0ur media editor amol rajan has been looking at the link between digital media and social divides. a common assumption about modern media is that it has created filter bubbles. 0nline experiences that confirm our prejudices, rather than challenge them. whether they are racist themselves or not, it doesn't matter. the effect is the same... 0ne collective of students intent on breaking out of echo chambers is called the cabinet. it started as a facebook group, but now has 21,000 members, many of them whom meet up in real life. this is an arena for civilised debate. especially on facebook, you have what you call echo chambers, these big groups where everyone will be only left—wing or only right—wing, or only this or that. and the fact that we have got this big giant group where everyone has different views but we can

all still be friends and have like 30—110 people turn up and all drink together, and not a fight break out, like, i think it's great. honestly, i love it. not for them the toxicity and trolling that is the daily bread of much social media. if we only see people as the ideas they represent, then how are we ever going to be civil and friendly with them if they oppose us? these clever students make social media live up to its name. none of them are particularly rich, or knew each other before. they're from very different places, geographically, culturally and politically. but social media allowed them to cross those divides, establishing exciting if tenuous digital relationships, before getting to know each other properly in real life. what do you say to those critics, and there are many, who say that social media platforms like facebook don't bring people together, they drive them apart? across the whole of europe, a0 million people are part of groups on facebook, and those groups are set up around a passion. and then we find they start to talk about other things, they start to talk about politics and things that matter to them and that discourse, it is called crosscutting political discourse, studied by academics, actually means that they start

to talk about those things in a way that is very civil, because they respect the people that come together, and it means they see views from lots of different places, because it's not their normal set of friends. for millions of users, social media is a cesspit of anger. yet the latest research shows there is more to it than that. you can find a relationship between social media and political polarisation if you look only at social media. but, in a complex multimedia environment, you find people interacting with others who have varying points of view, changing their minds, encountering contradictory information. 0nline relationships will never match the depth of trust and reciprocity of offline relationships. but, by allowing disparate factions to connect with one another, social media can cross divides, as well as create them. amol rajan, bbc news. you are watching newsday on the bbc. still to come on the programme: is this the last we are seeing of this village? as climate change raises water

levels, an island in india is at risk of sinking. also on the programme: we talk to a prominent australian winemaker on the financial impact of wildfires on agriculture. first, the plates slid gently off the restaurant tables. then suddenly, the tables, the chairs and people crashed sideways and downwards, and it was just a matter of seconds as the ferry lurched onto her side. the hydrogen bomb. on a remote pacific atoll, the americans had successfully tested a weapon whose explosive force dwarfed that of the bomb dropped on hiroshima. i had heard the news earlier, and so my heart went bang, bang, bang! the constitutional rights of these marchers are their rights as citizens of the united states, and they should be protected even in the right to test them out, so that they don't get their heads

broken and are sent to hospital. this religious controversy — i know you don't want to say too much about it — but does it worry you it's going to boil up when you get to the states? well, it worries me, yes. but i hope everything will be all right in the end, as they say. as this is newsday on the bbc. i'm rico hizon in singapore. and i'm kasia madera in london. our top stories: venezuela's opposition leader makes a triumphant return to the capital, caracas. butjuan guaido risks arrest by returning to his homeland. the developments on the huawei case are causing major new tensions between canada, the us and china. china accuses two canadians of spying, as a senior huawei executive sues canada over her arrest.

at least 23 people are killed, some of them children, after two tornadoes hit the southern us state of alabama. more on that and all our stories on bbc.com. let's now take a look at some front pages from around the world. the south china morning post leads on the huawei dispute, and says a senior chinese official has accused the united states of violating the rules of the world trade organisation. the official said the us interfered politically in the activity of the chinese company, when it requested that huawei's cfo, meng wa nzhou, was arrested in canada. the japan times reports that the lawyer for carlos ghosn is confident the ex—nissan chairman will soon be granted bail. mr ghosn has been in detention since 19 november and has already been denied bail twice.

he denies allegations of financial misconduct. and finally, the philippine star says the government of rodrigo duterte has stood firm on its decision to publish a list of politicians allegedly involved in illegal drugs. the presidential spokesman said releasing the ‘narco list‘ would help voters choose their leaders in the upcoming midterm polls. now, what stories are sparking discussions online? rico, do you reckon that your commute is stressful? what are asking you? —— and i. —— am i. well, take a look at this. drivers on a highway in colorado found themselves with an avalanche crashing down a mountain towards them. the road was enveloped in snow, traffic brought to a standstill,

cars had to be dug out, but incredibly, no injuries have been reported. now to australia, where the country's hottest summer on record, together with floods and fires in some states are hitting farmers hard. wine makers are also being hurt. fires in the state of victoria this week have completely destroyed some vineyards, while other growers in south australia and new south wales are struggling amid soaring temperatures at the start of harvest. yes, it is always conundrum. wine is a very social product but at the end of the day, we are just farmers and we have the vagaries of the weather and this he really has tested everyone's patients. you are rolling

with the punches, so how are winemakers like yourself coping. —— patience. well, production is down this year, we are still harvesting ata this year, we are still harvesting at a region near us and we are only getting half the time is that we expected to get, less production, a great cannot be found elsewhere, so we are going in the low production this year across australia. customers will probably get a bit of a price rise coming to an a couple of years's time and we just hope that the weather does come back in favour. so the outlook you are seeing is looking bleak for 2019? bleak only in terms of the tonnage in some areas. australia is a very large place, and some regions are having a fantastic vintage, the hunter having a fantastic vintage, the hu nter valley having a fantastic vintage, the hunter valley for instance, the margaret river, but the quality will be higher because you have less juice, you have lots of concentration flavours, so lower

yield is not mean lower quality, quite often lower yield means very high—quality. quite often lower yield means very high-quality. and a dry year could also be awfulfor growers, birds pick drying fruits, even kangaroos come in to eat crops at a dry you can also be good for winemakers, can you explain a bit more about that? yeah, that is very true. when we have a drought, dry year, there is no grass for the kangaroos to feed on. of course, a vineyard is nice and green to feed on and then better still, he gets in sweet berries. there are years when we get kangaroos moving into the vineyards and actually devastating the whole vineya rd. let's take you now to a tiny island in the bay of bengal. the island of ghoramara on the east coast of india is on the brink of sinking. climate change is causing water levels to rise rapidly here,

and soon ghoramara could vanish completely, as the bbc‘s devina gupta reports from the island. trapped by the waters that are taking away his livelihood and home. for this 43—year—old, there is no escaping the effects of climate change. he could be the last of his generation to live on this island of ghoramara in india. he knows it is sinking. there are more floods known the water level is rising. i have to catch fish to survive stock write more than 50% of the land he has disappeared underwater in the last 20 years. —— more than. disappeared underwater in the last 20 years. -- more than. scientists say global warming has reduced is in the himalayan region and more water is coming from those mountains when they entered the bay of bengal. this is how bad the situation is. just

three months back, there was land here with five families living in height, but all that is left is that submerged tree. locals told me it was 30 feet tall, that is about the 2—storey building and this is how fast the water is moving in. there is little those living here can do to stem the rising tide. this man was once a rich farmer, but now he says the river water which wants nourished his crop is of betel leaves are ruining them every year. as more water rushes down from the mountains, they are bringing more water to the area. there is nothing left to me here. those who can and are living. -- for me. more than half the island's population have fled the rising waters in the last decade. it is devastating for those left behind, especially for the

young. translation: teachers do not wa nt to young. translation: teachers do not want to come and stay here. i want to bea want to come and stay here. i want to be a doctor, but how can i study without good teachers? this man left after floods destroyed his without good teachers? this man left afterfloods destroyed his home, but safety has steep price. he lives in a government run resettlement colony on the other side of the river, but refuses to call at his home. -- eat. -- it. preservation sea this is not my homeland, this is not where i belong. now i have to work hard to make ends meet stock wait until the government finds a more prominent solution, a 115,000 people still stuck on the sinking island, their future could soon be washed away. -- this is not. you have been watching newsday.

i'm rico hizon in singapore. i'm kasia madera in london. many thanks, will be back at the next edition of newsday shortly. see you soon. hello there. last tuesday bought some exceptional winter warmth. this tuesday a very different story, quite chilly start the day remains u nsettled. quite chilly start the day remains unsettled. some rain and snow over higher ground in the north, some sunny spells to be had as well. a lot going on on the satellite picture, there is once well here and in area of low pressure pushing a quarry across europe. —— pushing away. that will be approaching from the south—west is the go through the day, this first area of low pressure fittings and showers in across northern ireland, northern england and scotland. quite chilly start particularly in eastern and north—eastern parts of the uk, damages for some spots tom below freezing. as you go through the day,

you will see the show ran across northern england and northern ireland, some rain over higher ground in scotland. approaching the south—west, another system. there will be some rain in between, some sunny skies in the tuesday afternoon but outbreaks of rain, sleet and hill snow moving northwards across central and southern parts of scotland, still a few showers across northern england and perhaps northern ireland. sunny weather into the north midlands, east anglia, the south—east. but sunshine will tend to turn quite hazy as crowd invades and south—west, head of this frontal system, and south—west, head of this frontal syste m , a ny and south—west, head of this frontal system, any outbreaks of rain and strengthening wind. we could well see gusts of 50 to perhaps 60 miles an hourand see gusts of 50 to perhaps 60 miles an hour and expose spots in the south—west, heavy rain driving its way northwards that snow developing almost on the northern edge across higher ground in scotland. a chilly night in aberdeen, freezing. 10 degrees in plymouth, something milder spreading across parts of the

south, but low pressure firmly in charge on wednesday. frontal systems, areas of rain around it and as the wet system —— weather system meet some wet weather, we will once again season wintry weather, plenty of showers eastwards over northern ireland, wales, in the england, some sunny spells in between. single figure is definitely across north—western parts of the uk, but actually that cold air will dig its way southwards during thursday. it will be quite windy as well across parts of scotland, some wintry showers falling the increasingly low levels here. temperatures ranging from around six to 11 degrees and it stays unsettled as we head towards the weekend, we will cease and showers at times. some of those wintry over higher ground and generally feel a bit chilly. —— it will.