welcome to bbc news — i'm lisa—marie misztak. our top stories: summit in a war zone — president biden makes a surprise visit to ukraine — and reaffirms america's support. kyiv stands, and ukraine stands. democracy stands. the americans stand with you. two weeks after being struck by catastrophic earthquakes — turkey is hit by a further deadly tremor. and the medical breakthrough that could help stroke victims flash floods in brazil. the president lies in as dozens are

declared dead. and the medical breakthrough that could help stroke victims regain control of parts of their body. president biden has arrived in poland after an extraordinary visit, to an active war zone on monday. joe biden�*s unannounced and surprise trip to kyiv was short on time, but long on symbolism, ahead of the first anniversary of the russian invasion of ukraine. he said america would stand with ukraine for as long as it takes and pledged another $500 million of military aid. speaking while air raid sirens were going off, president biden added that vladimir putin's war of conquest was failing. our international editor, jeremy bowen has this report. (air-raid siren wails) the air—raid alarm, as the two presidents arrived at st michael's church, where ukraine commemorates its war dead, felt too well

timed to be a coincidence. with unprecedented security in kyiv, the americans had warned the kremlin that joe biden was coming. he had just arrived from a long trainjourney and a point was being made. ukraine was still under attack, its most powerful ally was there, in an active war zone, to show its leader support. president biden told the people running ukraine's war that this is where he wanted to be in the days leading up to the first anniversary of russia's attempt to extinguish ukraine's independence. president zelenskyy knows ukraine's future depends on america and joe biden. translation: we can and must make this year, 2023, _ the year of victory, and i want to emphasise that this unprovoked

and criminal russian war against ukraine, the whole of europe and the democratic world, must end with a clearing of all ukrainian land from russian occupation, and firm guarantees of long—term security for both our country and the whole of europe, and the whole world. putin's war of conquest is failing. russia's military has lost half its territory it once occupied. young, talented russians are fleeing by the tens of thousands, not wanting to come back to russia. he thought he could outlast us. i don't think he is thinking that right now. strong support, but the ukrainians want more than words. they want war—winning weapons. the hard reality of russian aggression has forced nato leaders, and especially president biden, into a series of difficult decisions. the biggest so far may be looming. ukraine doesn't just want weapons that will allow it to survive, it wants to win the war, and up to now, that is a level of help that

president biden has not been prepared to grant. the ukrainians are pressing for a decisive upgrade as soon as possible. time might not be theirfriend. the cost that ukraine has had to bear has been extraordinarily high, and the sacrifices have been far too great. they have been met, but they've been far too great. ukraine doesn't release casualty figures. not as high as russia's... ..but still in the tens of thousands. the russians are bleeding another generation of ukrainian fighters. that is a big reason why president zelenskyyy wants urgently to convincejoe biden to help ukraine win, notjust hold steady

in a long war of attrition. the wall commemorates the dead of the earlierfighting with russia, that started in 2014. each flag represents a life lost in the last 12 months. the kremlin believes it will win a trial of endurance. ukraine doesn't want to wait to find out. jeremy bowen, bbc news, kyiv. earlier we spoke tojeffrey stacey— a us national security advisor, and also a former state department official in the obama administration. this is how significant he thought biden�*s trip was. extraordinarily significant, for multiple reasons. first of all it was a surprise to everyone. i mean, the entire world, with a few exceptions of ukrainian and american officials. number two, this was done with immense danger afoot. no us troops on the ground, that has never happened

with a us president before but the strategic value is probably second to the symbolic that value for ukrainians, from the president all the way down to average ukrainians, across the country and many abroad, that this is probably their second finest hour. the finest hour would be at the end of the war and this very much is the beginning of that end. we can now speak to republican strategist rob stutzman. he joins us from sacramento. what has the reaction been from americans to president biden�*s to ukraine. in americans to president biden's to ukraine. . to ukraine. in general, the reaction — to ukraine. in general, the reaction is _ to ukraine. in general, the reaction is very _ to ukraine. in general, the reaction is very positive. i reaction is very positive. americans support the war, the more majority do. zelenskyy is very popular in the united states and this is something the president biden seems to

have managed well over the last year, this war effort, in pulling nato together in this effort. there was dissent from some republicans but they are allowed if local —— but they are a loud band of isolationists to use this opportunity to score their own political points but i think the consensus even within the republican party, particularly amongst republicans in the senate was that today was a very strong day for the united states president and american standard unified with their president on that foreign sold today. president on that foreign sold toda . , , , today. president zelenskyy with a ress today. president zelenskyy with a press conference _ today. president zelenskyy with a press conference on _ today. president zelenskyy with a press conference on monday i a press conference on monday with president biden said would biden�*s visit, there is a chance for victory. what do you think about that?— think about that? zelenskyy is the optimist — think about that? zelenskyy is the optimist and _ think about that? zelenskyy is the optimist and he's - think about that? zelenskyy is the optimist and he's done - think about that? zelenskyy is the optimist and he's done a l the optimist and he's done a very good job of continuing to pour more and more support for his team at as is demonstrated. there can be effective war fighting machine which hearkens back to his address before the

united congress last year which had a rallying effect so zelenskyy is a wonderful propagandist and all the best ways and i'm sure he will very effectively use the visit to help joe effectively use the visit to helpjoe biden back in the united states, which is to steal more support for this effort that is now starting to drag on up to a year now. it’s drag on up to a year now. it's almost a — drag on up to a year now. it's almost a year _ drag on up to a year now. it's almost a year in _ drag on up to a year now. it's almost a year in a _ drag on up to a year now. it's almost a year in a few days' time since the war in ukraine started but how significant and powerful of the message do you think it would be to moscow that biden went to ukraine? i think very powerful, very good chance this may make look to look weak domestically, in his own politics, so very forceful. i think it surprised people, but it's not clear that all of it, this is something he would have done in the warzone like this. a very strong message. notjust a putin bit back to americans. and the rest of our nato allies.

americans. and the rest of our nato allies-— nato allies. earlier i spoke with jeffrey _ nato allies. earlier i spoke with jeffrey stacey. - nato allies. earlier i spoke with jeffrey stacey. do - nato allies. earlier i spokej with jeffrey stacey. do you with jeffrey stacey. do you agree with him that this is the beginning of the end of the war afterjoe biden�*s visit? that's hard to say. what still not clear, and this becomes problematic forjoe biden, how does the war end?— does the war end? what does the end mean? _ does the war end? what does the end mean? there _ does the war end? what does the end mean? there is _ does the war end? what does the end mean? there is still- does the war end? what does the end mean? there is still a - end mean? there is still a concern here in the united states that are desperate vladimir putin conducted dangerously and jeopardise all of western europe, eastern and western europe and even the united states so as to how the war would end, it's hard to talk about an end being insight. talk about an end being insiaht. . ., talk about an end being insiaht. ., ,, i. talk about an end being insiaht. ., ~ i. ., talk about an end being insiaht. . ~' ., insight. thank you for your time. two weeks after earthquakes flattened much of the region, and killed more than 16,000 people, southern turkey has been hit by another earthquake. the country's disaster and emergency agency said a 6.3 magnitude tremor struck close to the city of antakya, at 8 o'clock in the evening, localtime. it was followed by three aftershocks, the strongest of which was a 5.8, near the town of samandag. our correspondent laura bicker is in antakya in southern turkey.

everyone here is taking a collective intake of breath after a few hours of fear, panic, and a large number of aftershocks that felt like theyjust kept coming. we have heard from the hatay mayor that a number of people have been trapped inside the rubble. there are three rescues ongoing. three people have sadly died, and more than 200 people have been taken to hospital, and that is according to the interior ministry here in turkey. over in syria, we are hearing that over 100 people have been injured in the latest earthquake. what's happened is, over the last couple of weeks, many of these buildings that were already damaged are being brought down by diggers.

many of those partially damaged buildings have collapsed, and some structures that were completely standing have also broken down. even a bridge has also collapsed this evening. so that gives you an indication ofjust how strong these aftershocks were. now, we have had a number of aftershocks over the last couple of weeks since those two large quakes on 6th february but not one that felt as strong as this one. a number of mayors from throughout the province here in hatay are calling for urgent help. they are asking for tents. they say more and more people are now needing to be out of any other damaged buildings and into tents. you can see one of the camps set up behind me. but others really feel that this is a place they no longer want to call home. tens of thousands of people are thought to have died here in hatay province, and i think it is a reminder again tonight that this is an earthquake zone, and one they don't feel safe in. brazil's president has

travelled to the state of sao paulo to visit areas affected by flooding and landslides that have left dozens dead. search and rescue efforts are continuing with people still thought to be trapped in the rubble of collapsed buildings. the bbc�*s tim allman reports. seeing for himself the terrible damage nature can cause. president lula da silva aboard a military helicopter above some of the towns and villages almost swept away by the mudslides. but even in the darkest of moments, he believes there is hope. translation: if each | one of us works alone, we do less work. that's why we need to stick together, that's why we need to share the good things and the bad things because together we'll be much stronger and we'll recover quickly. when you see some of the damage, you may have your doubts. the hillsides around here are scarred. many of the homes, buried. some begin the desperate task of trying to clean up.

others don't have that luxury, their property destroyed, their lives now on hold. translation: it was like a horror movie. | we saw our house swept away, and my nephew's house. i'm sure they were sleeping, all three of them, and up to now, we have no news. at this airbase, some of those rescued from the mudslide are brought to safety, but this has also become a destination for those who didn't survive. there are hopes that people buried under the muck and the rubble may still be rescued, but more rain is expected in the coming days. this is a crisis that is seemingly far from over. tim allman, bbc news. stay with us on bbc news. still to come: the row over rewriting roald dahl classics rumbles on here in britain. now the prime minister has his say.

prince charles has chosen his bride. the prince proposed to lady diana spencer three weeks ago. she accepted, she says, without hesitation. as revolutions go, this had its fair share of bullets. a climax in the night outside the gates of mr marcos's sanctuary, malacanang, the name itself symbolising one of the cruellest regimes of modern asia. the world's first clone has been produced of| an adult mammal. scientists in scotland have i produced a sheep called dolly using a cell- from another sheep. warren beatty and faye dunaway announced to the world that the winner of best film was la la land. the only trouble was, it wasn't. the mistake was only put right in the middle of gushing speeches by the team behind the modern musical. not for 20 years have locusts been seen in such numbers in this part of africa. some of the swarms have been ten miles long. this is the last time - the public will see this pope. very soon, ifor the sake of the credibility. and authority of the next pope, benedict xvi will,

in his own words, j be hidden from the world for the rest of his life. i this is bbc news. the latest headlines: summit in a war zone. president biden makes a surprise visit to ukraine and reaffirms america's support. two weeks after being struck by catastrophic earthquakes, turkey is hit by a further deadly tremor. our news reporterjoins us now

the european union has imposed a fifth now round of sanctions against iran over its brutal crackdown of protesters. as foreign ministers discussed the sanctions package, thousands in brussels demonstrated against the regime. this comes as the united kingdom's security minister tom tugendhat told parliament the iranian government is responsble for 15 credible threats to kill or kidnap british citizens or uk—based people in just over a year. azadeh moshiri joins us now. they are targeted at officials they are targeted at officials they believe are directly involved in the brutal crackdown on protesters as well as carrying out the death penalty on some of them. people like lawmakers, prison authorities orjudiciary officials because remember more than 500 people have now been killed in these months of protests since the death of the young kurdish woman last september. but these sanctions stop short of something that thousands of protesters on monday in brussels had been calling for and that is designating lahri's powerful revolutionary guards as terrorist. earlier i spoke to a member of the european parliament who is an iraqi and swedish member of the parliament and she explained to me why she believed designating

the revolutionary guard as terrorist is important. member states could _ terrorist is important. member states could unite _ terrorist is important. member states could unite the - terrorist is important. member states could unite the behind l states could unite the behind ukraine, that was totally right and necessary and important. we can do this again and unite and stand united as the eu behind the three iranians people and their shouts for freedom. this should be our priority because i do believe that iran is not only a political and military threat to the region but also to europe. threat to the region but also to europe-— threat to the region but also to europe. threat to the region but also to euroe. ,, ., ., to europe. she then went on to exlain to europe. she then went on to exoiain that — to europe. she then went on to explain that iran _ to europe. she then went on to explain that iran supported - explain that iran supported russia joining the war in ukraine and that is another reason why that designation is important to her. the iranians governments are also of note to the ukrainian government as well with security ministers developing —— delivering a statement in parliament. the developing -- delivering a statement in parliament. the uk has also implemented _ statement in parliament. the uk has also implemented new - has also implemented new sanctions on the iranians regime and revolutionary

guards. the security minister tom tugendhat delivered a statement in parliament and explained why the persian language broadcaster had to temporarily close its office in london. that is something we have covered on the bbc this week. the reason is because of threats from the regime on the journalists of the broadcaster, something that mr tugendhat called an outrageous violation and is the reason why our foreign secretary summoned the iranians charge d'affaires, the top deployment in the uk, on monday to discuss what they believe is an outrageous violation. but he also went on to talk about how great a threat and the reigning government is posing to countries around the world, that in some ways this is just the tip of the iceberg. he spoke about how between 2020 and 2022, iranians television services would collecting information on israeli and jewish people in the uk and the

government believes this was in view of carrying out lethal operations and he also said that on monday he spoke to his counterparts in france and the united states and germany and they all told him of other credible threats on their own citizens and residents in their own country so this goes towards the same point, that world leaders believe that the government of iran is threatening not only its own people, not only carrying out threats within its own borders, but around the world as well. so be it supporting russia during the invasion of ukraine or carrying out and trying to carry out a threat against british european united states american citizens, iran presents an increasing global threat. . ., presents an increasing global threat. . ~' , ., presents an increasing global threat. ., ,, ., presents an increasing global threat. ., ., , threat. thank you for bringing us u- to threat. thank you for bringing us up to date. _ scientists in the us say they've used new technology to restore movement in the arms and hands of two people

who'd suffered strokes. the team in pittsburgh were able to stimulate the spinal cords by implanting electrodes in the neck. more research is still needed to develop the technology, but those who led the study say the technique could have a huge impact on people's lives. earlier dr marco capogrosso who is one of the main researchers at the university of pittsburgh explained to us how the treatment works. we normally treat a stroke is a brain disease, something that occurs in the brain. it is true that there is a lesion and consequently there is a blood vessel rupturing. and that deprives the brain of oxygen. but what happens is that the damage destroys the connections between our brain and the spinal cord which is where the secrets to movement are located. so we thought what if there was a technology that could allow us to defy those signals that trickle down the

lesion, that are surviving, and restore so people can move again. so we did a lot of research and found that there are specific spots inside the spinal cord and that would allow the spinal cord to listen again to the weekend signals and enable people to move after and enable people to move after a stroke. it and enable people to move after a stroke. , , a stroke. it is still in clinical— a stroke. it is still in clinical stages. - a stroke. it is still in clinical stages. you | a stroke. it is still in - clinical stages. you tried it out on a few different people. how long before something like this could be rolled out on a wider scale?— wider scale? that is a very important _ wider scale? that is a very important question. - wider scale? that is a very important question. one l wider scale? that is a very - important question. one thing to say is that we realise with technology that is clinically approved for other use, for example dealing with refractory praying, pain that does not respond to pharmacological cures. the technology exists we just need to approve the new application and the new it location of the implant. the

best part of this little thing is we still needs to go through all the steps that the fda requires to make sure it is safe and effective so we need to expand a study to more people and we have collected $8 million in funding for the next step over the next three years where we will have 20 people in a carefully controlled study. if that is successful we will move to the next study of 200 people which will finally determine the efficacy and safety of this technology and that will probably take within five or seven years. it is estimated _ five or seven years. it is estimated that - five or seven years. it is estimated that around l five or seven years. it is| estimated that around 12 million people globally suffer from strokes. is there a specific timeframe that you have found that someone be able to benefit from the new technology that you have helped to create? ., ., to create? right now our testin: to create? right now our testing is _ to create? right now our testing is restricted - to create? right now our testing is restricted to i to create? right now our - testing is restricted to people who have had a chronic stroke that has occurred at least six

months before starting. the participants of our study, one was nine years before the stroke —— after the stroke and the other was three years after the other was three years after the stroke. so right now we only know it works for people who are chronic but that means that most likely the earlier you intervene the better the result you could probably have. but we just do not know yet and we need to do more research to find out the optimal timeframe. here in the uk, the heated debate on updating the books of roald dahl has drawn the attention of the prime minister rishi sunak. he's the latest to criticise changes to some of the books, including the big friendly giant, and charlie and the chocolate factory, to update references to the characters' appearance and weight. words such as fat, ugly, crazy and mad have been updated to be more suitable for modern audiences according to the publishers. mr sunak�*s spokesman said works of fiction should be �*preserved and not airbrushed'. our arts correspondent david sillito reports. charlie and the chocolate factory, a much—loved children's story, here read by michael palin, featuring... there was augustus gloop who was always eating

and was very fat indeed. however, augustus is nowjust enormous — the word fat has gone. and it's one of a number of changes made to dahl�*s writing to make them less judgemental and avoid words like �*crazy�* and �*fat. however, this rewriting to avoid offence has itself created an upset. we don't seem to think children cope with words like �*fat�* any more. we have to protect children from distressing feelings, and i think that idea is causing all sorts of problems in society. you see it in all sorts of places, and we need to make children more resilient. the roald dahl story company said today any changes had been small and carefully considered. it's also worth noting there is a precedent. this isn't the first time roald dahl has been rewritten. even back in the 1970s, there were already discussions around his texts. for instance the oompa loompas which were originally

from africa, were already changed much earlier. �* , , earlier. but these were english birds and they _ earlier. but these were english birds and they could _ earlier. but these were english birds and they could not - birds and they could not understand the word african language the monkeys spoke. the word weird language the monkeys spoke. tue: word weird has language the monkeys spoke. tta: word weird has gone language the monkeys spoke. "tt2 word weird has gone as language the monkeys spoke. tt2 word weird has gone as well and for some this isjust word weird has gone as well and for some this is just care about words. for some this is 'ust care about wordsh for some this is 'ust care about words. we want our children — about words. we want our children to _ about words. we want our children to enjoy - about words. we want our children to enjoy books i about words. we want our| children to enjoy books but about words. we want our - children to enjoy books but we don't want them to take potentially offensive language into the playground that could leave to bullying.— leave to bullying. children are very course — leave to bullying. children are very course in _ leave to bullying. children are very course in their _ leave to bullying. children are very course in their talk. - leave to bullying. children are very course in their talk. so i very course in their talk. so absurd very course in their talk. sr absurd censorship orjust a way of preserving stories? as attitudes change. david cilento, bbc news. let's give you a quick glimpse of rio where the first full—scale carnival since the start of the pandemic is under way. carnival 2023 started with drumbeats and block parties across the city. every year hundreds of street bands and thousands of tourists as well as legal seeking a good time to send on rio during the world—famous party. you can

reach me on twitter. hello there. gales to begin with on monday, warmth to finish it. in fact, it was a very mild day, pretty much across the country, but highs of 17 celsius recorded in east anglia, 63 fahrenheit. the average for this time of year across the country, generally around eight degrees. now, we do have these weather fronts across the far north which are bringing outbreaks of light rain. but this milder air sandwiched between those two weather fronts is what's known as a broad, warm sector, and it can often at this time of year bring a lot of clouds. so, it's going to be a grey start, but an incredibly mild start first thing on tuesday morning. here's the rain from those weatherfronts, then, pushing out of the western isles up into the northern isles. not as windy as monday morning, but a noticeable breeze, and the cloud always

thick enough for a spot or two of drizzle. now, on the whole, greyer skies, more cloud around, but where we do get some breaks, temperatures will tend to respond. 13, 1a degrees, not out of the question. a change to come, though, as we move out of tuesday into wednesday. there's a cold front sinking its way steadily south. not bringing that much in the way of rain, but certainly introducing a change of wind direction. coming round from the northwest, a cooler, fresher source. so, to begin with on wednesday, we'll have some light showery rain sinking its way into east anglia and the south east of england, brightening up considerably behind with a few scattered showers being driven along by those north—west winds. and some of them to higher ground in scotland, turning increasingly wintry. notably fresher feel to the day, 7—11 degrees, the overall high. now, through wednesday into the early hours of thursday morning, mightjust have to keep a close eye on the chance, perhaps, of a few wintry showers running down through the north sea here under clearer skies and lower temperatures. so, it's going to be a chilly start to thursday morning.

touch of light frost in the far north not out of the question, but high pressure always sitting out to the west. so, the wind direction coming round from a north—westerly, not too cold, but certainly fresher than it has been in recent days. so, there will be a little bit more in the way of sunshine around on thursday. thicker cloud and outbreaks of showery rain into the far north, but in the sunnier moments shouldn't feel too bad. top temperatures of around eight or nine degrees, down to where we should be really for the time of year. it looks likely that we will continue to see a good deal of dry but fresher weather for many as we head towards the weekend.

sanctions this is bbc news — the headlines: president zelenskyy has said a world order based on rules and humanity depends on how events play out in ukraine. speaking after president biden's highly symbolic surprise trip to kyiv, he said ukraine's victory over russia depended on resolve and he saw such determination in mr biden. rescue services in turkey are once again searching for people trapped under rubble after a new tremor in the southeast — near the border with syria. this is the same region where 116,000 people were killed two weeks ago by a much larger earthquake. three people were killed.