this is 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. in brazil — flash floods and landslides in sao paolo state, the president flies in as dozens are confirmed dead. and the medical breakthrough that could help stroke victims regain control

of parts of their body. welcome to our viewers on pbs in america and around the globe. 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 dollars 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. we can now speak to daniel treisman who's a professor of political science at the university of california and expert on russia and vladimir putin. thank you forjoining us. president biden renewed support for ukraine on monday. how do you think that will be perceived by the kremlin? president biden was first of all sending a very strong signal of support to the

ukrainians, to zelenskyy and the west, that his personal commitment remains extremely strong but he was also sending a message to putin in the kremlin that there is not going to be any differences, significant differences in the western side, that the us is still leading, and that putin won't be able to, as biden said, outlast the west and its support ukraine.— support ukraine. biden says putin's war _ support ukraine. biden says putin's war of _ support ukraine. biden says putin's war of conquest - support ukraine. biden says putin's war of conquest is i putin's war of conquest is failing. do you think president putin thought they would be in this position almost a year on? well, clearly no. as we've seen, he anticipated a very quick victory, taking kyiv in a few days, and occupying the whole country. of course things have turned out very differently, and putin has been

forced to readjust his expectations repeatedly to define downward victory would mean, but it's not clear that even today, he can hold on to the gains the russian troops have made. so no, this is got to be an anniversary which is very difficult to putin, given his initial very high expectations. his initial very high exectations. , expectations. president putin is due to give _ expectations. president putin is due to give the _ expectations. president putin is due to give the state - expectations. president putin is due to give the state of - expectations. president putinj is due to give the state of the nation address in a few hours' time. what will be some of the main themes in that speech? i’m main themes in that speech? i'm sure he will _ main themes in that speech? i“n sure he will repeat his accusations against the west, is claims that the ukrainian regime is a regime of nazis, the russians are not fighting, just ukraine, but the whole of nato and the western world which is determined to overthrow his regime and to invade russia. so it will be another of the speeches, full

of frankly absurd rhetoric but rhetoric that has been reinforced so many times with the russian people, but it still seems to work reasonably well. . ~ still seems to work reasonably well. ., ~ , ., ., still seems to work reasonably well. ., ., well. thank you for your insight- _ 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. 0ur 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. laura bicker there. 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 flying 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 mudslides 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, pedal power: the disabled man who spent 10 years developing the perfect bike. 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 world 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. police in the uk have confirmed that the body discovered in the river wyre in lancashire yesterday is that of nicola bulley, the 45—year—old mother of two who went missing more than three weeks ago. her body was spotted by dog walkers about a mile away from where she was last seen. her family released a statement, saying their worst fears had been confirmed and went on to criticise some sections of the media for ignoring their appeal for privacy. lancashire police have also been criticised for their handling of the case asjudith moritz reports. the lancashire landscape held on to its secret for more than three weeks. the river wyre, snaking its way through the fields here, had the answer all along. what happened to nicola bulley? now, we know. sadly, we are now able to confirm that yesterday we recovered nicola bulley from the river wyre. nicola's family have been informed, and are, of course, devastated.

nicola's family have asked that we release the following statement on their behalf as follows. "our family liaison officers have had to confirm our "worst fears today. we will never be able to comprehend what nikki had gone through in her last moments, and that will "never leave us. "nikki, you are no longer a missing person. "you have been found. "we can let you rest now. "we love you, always have and always will. we will take it from here." as nicola went missing whilst walking her dog next to the river, the wyre was searched extensively, but she lay unseen for 2h days. yesterday, her body was found by members of the public about a mile downstream. lancashire police said all along they believed nicola had fallen into the water,

but the force has been criticised for its response, and especially for its decision to release personal details about the mother—of—two. when the cameras have left this village, and the posters and ribbons have been taken down, the police and the media will have some soul searching to do, including whether the relationship between them had any influence on the way the case itself was handled. nicola's disappearance has had mass coverage. the media converged on her small village, and her family directly criticised some organisations. "we tried last night to take in what we had been told "in the day, only to have sky news and itv making contact "with us directly, when we expressly asked for privacy. "it is shameful they have acted in this way. "0ur girls will get the support they need from the people "who love them the most.

"it saddens us to think that, one day, we will have "to explain to them that the press and members "of the public accused their dad of wrongdoing, "misquoted and vilified friends and family." as a retired lancashire detective, bob eastwood has watched the case and its coverage with interest. can you separate out the way the communications were dealt with and the investigation? well, i think there became a big beast that was hungry for information. people were going out for their own information. people were making things up, experts were adding to it, and quite clearly, in my view, they were making it up based on no evidence whatsoever. the yellow ribbons still fluttering were supposed to signify hope.

tonight, that has run out. now, nicola bulley�*s family know she's not coming back. the mystery of her disappearance ending with the saddest of answers. judith moritz, bbc news, lancashire. let's get some of the day's other news. the israeli parliament has voted to push ahead with a highly controversial overhaul of the judicial system — proposed by prime minister benjamin netanyahu's religious—nationalist government. tens of thousands of people protested against the plan, and opposition parties have vowed to oppose the move. american prosecutors have downgraded the involuntary manslaughter charges against the hollywood actor, alec baldwin, relating to the fatal shooting of his cinematographer with a live gun on a film set in 2021. the new charges carry a maximum sentence of eighteen months — rather than five years. a government panel injapan has proposed raising the country's age of consent to 16 as part of a major overhaul of sex crime legislation. it's currently 13 — one of the lowest in the world.

it follows a string of acquittals in rape cases that triggered nationwide outrage. under current law, sex with a child who's at least thirteen is not considered statutory rape injapan. 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 treatmnet works. basically, we normally imagine strokes as a brain disease, something that occurs in the brain, and it's true that there's a lesion that happens in the brain as a consequence of a disruption of a blood vessel or sometimes the interruption of a blood vessel that does not

bring oxygen to the brain. what happens in reality is that that damage destroys the connections between our brain and our spinal cord, which is where the signals where we control movement are located. what we thought was, what if there is a technology that could allow us to amplify those signals that trickle down the lesions that are surviving, and restore the capability of these people to move again? what we did was a lot of research and found that there are specific spots in the spinal cord located in the neck, to restore movement, that would allow the cells inside the spinal cord to lesion again to these weakened signals after the stroke and enable people to move. it's in its clinical stages. you've tried it on a few different people. how long before something like this could be rolled out on a wider scale?

that's a very important question. one thing to say is that we have developed technology already clinically approved for other use, for example, spinal cord stimulation to treat refractory pain, which is pain that not respond to normal pharmacological treatments. the technology exists. we need to approve the new application of this technology and the new location of the implant. despite this little thing, we still need to go through all the steps the fda requires to declare these technologies safe and effective. we need to expand our study to more people, and we collected $8 million in funding from the national institutes of health. the next step, in the next three years, we're going to expand to 20 people in a more carefully controlled study. after that, if it is successful, we will move to an extra study of 200 people which would finally determine the efficacy and safety of the technology. that will probably take between five to seven years. it is estimated that around 12

million people globally suffer from strokes. is there a specific time frame that you found that someone might be able to benefit from this new technology that you've helped to create? right now our testing was restricted to people with chronic stroke, meaning it occurred at least six months before starting the study. the participants of our study, one was nine years from the stroke and the other three years after the stroke. right now we know that it works for people that have chronic, but that means that most likely the earlier you intervene, the better results, better outcomes you would properly have. we don't know yet. need to do more to find out the optimal timeframe.

mauritius has closed its stock exchange as a cyclone approaches packing wind gusts of up to 120 km/h. weather services the island nation state poses a direct threat. the country's prime minister urged citizens to take all necessary precautions, stay home and remain vigilant. imagine teams and madagascar are also bracing for floods and landslides in four regions as it is expected to make landfall on tuesday. injanuary it is expected to make landfall on tuesday. in january a on tuesday. injanuary a tropical on tuesday. in january a tropical storm killed 33 people in madagascar. when mark harrison developed multiple sclerosis 20 years ago — at the age of 36 — he was determined to keep exercising. it has taken mark, who lives in north west england, a decade to develop a prototype of a bike — which he hopes will make cycling more accessible to disabled people. and it's already being acclaimed as mairead smith reports. this isn't any ordinary trike — this trike could mean fun,

freedom and fitness for people with disabilities. this has a pedal assist motor, integrated battery. independent suspension and a pattern for the steering. the triple tread trike has been developed by mark who was diagnosed with ms 20 years ago. i really felt a the opportunity to exercise more and inclusive cycling options available on the were a bit limited so i'd decided to create something that would motivate me to get about out on the bicycle again. it has taken ten years to get this prototype, you hope now you can take the next step. i am at the stage now where i'm looking for some investment or partnership ideally with a bicycle brand to be able to take this to the next step and make cycling with a disability as cool as on a standard bike.

mark's ms means he can no longer pedal so he has called in a war veteran for the test run. . , in a war veteran for the test run. ., , ., ., in a war veteran for the test run. ., , ., _ run. really good, obviously aives run. really good, obviously gives me — run. really good, obviously gives me the _ run. really good, obviously gives me the independencej run. really good, obviously - gives me the independence that i'd need and the feeling of being able to do think that i did before my disability. and? did before my disability. andy reid lost three _ did before my disability. andy reid lost three limbs - did before my disability. andy reid lost three limbs in - did before my disability. andy reid lost three limbs in a - reid lost three limbs in a landmine explosion in afghanistan.- landmine explosion in afghanistan. landmine explosion in afuhanistan. ., ., afghanistan. being out and about as amazing - afghanistan. being out and about as amazing for- afghanistan. being out and about as amazing for your. about as amazing for your mental well being, being in the great outdoors and just that freedom again and i had ridden mountain bikes in the past before i was injured, it gives you a sense of anything is possible and it is about adapting to your circumstances. and people like mark adapting equipment, gives you a great feeling of achievement and well being. feeling of achievement and well beinu. �* . feeling of achievement and well bein., �* .,. ., . feeling of achievement and well beinu. ., . ., feeling of achievement and well beini, .,. ., �* , ., being. and a chance for andy to 'oin in being. and a chance for andy to join in some _ being. and a chance for andy to join in some family _ being. and a chance for andy to join in some family fun. - and that is all for the programme for now.

you can reach me on twitter — i'm @lmmisztak. 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.

this is bbc news. the headlines: president zelensky 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 south—east 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. 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