welcome to bbc news. i'm david willis. our top stories — china warns the us it will "bear the consequences" if the house speaker nancy pelosi visits taiwan. presidents xi and biden are due to speak on thursday. the united states says it's offered russia a deal, aimed at freeing the american basketballer, brittney griner. trying to avert a global food crisis — the first ships carrying crucial grain supplies prepare to leave ports in ukraine. he's credited with inspiring the global green movement — tributes are paid to the environmentalist james lovelock, who has died, at the age of 103.

welcome to our viewers on pbs in america, and around the globe. a potential visit to taiwan by us house speaker nancy pelosi is stirring alarm in president joe biden�*s administration. they fear the trip may cross red lines for china, and that there is no exit path. beijing, which claims sovereignty over the island, has already issued harsh warnings, even suggesting a possible military response. against this backdrop, president biden is expected to call president xi on thursday, for the first time in months. we can now speak to oriana skylar mastro, who's a center fellow at stanford university's freeman spogli institute for international studies, where her research focuses on china, and asia—pacific security issues.

the thank you very much for joining us. nancy pelosi has said this trip is all about supporting, promoting democracy in taiwan. she wrote together, do you think? my in taiwan. she wrote together, do you think?— in taiwan. she wrote together, do you think? my personal view is these types _ do you think? my personal view is these types of _ do you think? my personal view is these types of political - is these types of political manoeuvrings, whether nancy pelosi going to taiwan or president biden saying the united states is definitely going to defend taiwan only exacerbates tensions and doesn't help united states with the fundamental issue, which is maintaining military deterrence against china.— against china. now, the united states has _ against china. now, the united states has said _ against china. now, the united states has said that, _ against china. now, the united states has said that, china - against china. now, the united states has said that, china i i states has said that, china i should say, has said the united states will face potentially serious consequences if this visit goes ahead. what form could they take, do you think? i am not concerned about nancy pelosi's safety or security, but this is a perfect scenario from the perspective of

beijing. they love to take situations and pretend like they are reacting to them to make advances, so my primary concern is some military manoeuvres, some high—risk large—scale military exercises or increase their force posture across from taiwan which we have only seen them do. f nancy pelosi now— have only seen them do. f nancy pelosi now cancels _ have only seen them do. f nancy pelosi now cancels this _ have only seen them do. f nancy pelosi now cancels this trip - have only seen them do. f nancy pelosi now cancels this trip it - pelosi now cancels this trip it will heighten the fares i suppose of those in taiwan that the united states is simply backing down in the face of chinese aggression. it is even more problematic _ chinese aggression. it is even more problematic than - chinese aggression. it is even more problematic than that. i chinese aggression. it is even i more problematic than that. the chinese have only been very upset with moves in congress made to support taiwan. the correct statement be made by the white house is that the taiwan, the potential defence of taiwan was put forth by congress. if nancy pelosi does not go to taiwan because she is

urged not to do so by the president, we are likely to see much more pressure coming out of beijing against the white house, for whatever moves, statements or legislation come out of the us congress. mil out of the us congress. all this comes _ out of the us congress. all this comesjust before the out of the us congress. all this comes just before the 20th congress, at which mr xi is expected to extend his role. the timing is unfortunate to put it mildly, isn't it? i think right now there is no good time in us china relations, there is a list tensions, ways windows of military —— are always opportunities, we can do is find something either side as i was going to be upset by. thank ou ve was going to be upset by. thank you very much _ was going to be upset by. thank you very much for _ was going to be upset by. thank you very much forjoining - was going to be upset by. thank you very much forjoining us. . the united states says it's offered russia a deal, aimed at freeing the american basketball star, brittney griner, and a former us marine, paulwhelan. secretary of state antony blinken says he plans to discuss the matter in a phone call with his russian counterpart, sergei lavrov. it would be the first such contact since russia's invasion of ukraine.

barbara plett—usher reports. hostage diplomacy is intruding on america's basketball courts. players in the washington mystics know brittany greiner, they have competed against her, they have competed against her, they respect her. they are shaken by her arrest. it was really sad — shaken by her arrest. it was really sad and _ shaken by her arrest. it was really sad and a _ shaken by her arrest. it was really sad and a bit - shaken by her arrest. it was really sad and a bit scared, | really sad and a bit scared, because it felt like it could because it felt like it could be any of us, i play overseas, the vast majority of wnba players play overseas, so seeing her in that kind a position where she is kind of helpless was really u nfortu nate. helpless was really unfortunate. , , , unfortunate. griner pled guilty to a drug-related _ unfortunate. griner pled guilty to a drug-related charge - unfortunate. griner pled guilty to a drug-related charge but l to a drug—related charge but says she didn't intend to break the law. the us claim she has been wrongfully detained, which russia denies. but now in a rare move, the state department has gone public about an offer to win her release and that of another american, to win her release and that of anotheramerican, paulwhelan. another american, paul whelan. we have anotheramerican, paulwhelan. we have conveyed their son a number— we have conveyed their son a number of— we have conveyed their son a number of occasions, and

directly— number of occasions, and directly to russian officials. and — directly to russian officials. and my— directly to russian officials. and my hope would be that in speaking _ and my hope would be that in speaking to foreign minister lavrov— speaking to foreign minister lavrov i _ speaking to foreign minister lavrov i can advance the efforts _ lavrov i can advance the efforts to bring them home. he efforts to bring them home. wouldn't efforts to bring them home. he: wouldn't give details, but the administration did recently agreed to a prisoner swap with the kremlin for this former us marine. that increased pressure from the families of other detainees. earlier, the president does not point man for hostages told me their campaign was effective. the importance _ campaign was effective. the importance of _ campaign was effective. the importance of the _ campaign was effective. iia: importance of the family campaign was effective. tia: importance of the family is coming up with their narrative to address what they are going through is actually very powerful for them, through is actually very powerfulfor them, and i think it is also good in creating situational awareness and at times holding the us government accountable.— accountable. britney greiner's case has helped _ accountable. britney greiner's case has helped shine - accountable. britney greiner's case has helped shine a - case has helped shine a spotlight on an issue usually in the shadows. this mural recently unveiled highlights how many americans are in the specs, how many stories there are, such as matthew heath. he has been held in venezuela for nearly two years.—

nearly two years. matthew has been over _ nearly two years. matthew has been over there _ nearly two years. matthew has been over there so _ nearly two years. matthew has been over there so many - nearly two years. matthew has| been over there so many times that both of his hands have been broken. he that both of his hands have been broken.— that both of his hands have been broken. , ., ., ,, , been broken. he try to take his own life and — been broken. he try to take his own life and has _ been broken. he try to take his own life and has been - been broken. he try to take his own life and has been moved i been broken. he try to take his| own life and has been moved to a military hospital. mr; own life and has been moved to a military hospital.— a military hospital. my son is not a military hospital. my son is rrot going _ a military hospital. my son is rrot going to _ a military hospital. my son is not going to survive - a military hospital. my son is not going to survive if - not going to survive if our government does not get him out. i don't know how much more he can endure. the out. i don't know how much more he can endure.— he can endure. the return of any detainee _ he can endure. the return of any detainee would - he can endure. the return of any detainee would bring - he can endure. the return of l any detainee would bring hope to others, but not dispel that aspect, agonising uncertainty. barbara plett usher, bbc news, washington. evelyn farkas served in the obama administration as deputy assistant secretary of defense for russia, ukraine, and eurasia. she's currently executive director of the mccain institute, and shejoins us from washington. thank you very much, welcome to bbc news. the united states's decision to go public with this potential deal is risky, to put it mildly. why do you think they have decided to negotiate in public in this way?—

in public in this way? well, it sounds, david, _ in public in this way? well, it sounds, david, like - in public in this way? well, it sounds, david, like they - in public in this way? well, it. sounds, david, like they didn't actually announce it right away, but some time has passed, and so they may be getting uncertain and a little bit nervous about what the russian movie is going to be, whether the russians will accept this swap or not. i mean, if i had to predict, i think the russians well, because they have been almost desperate to get this arms trafficker back into russia, frankly because i think he is a russian operative. he was trained by the russian intelligence services, served in the russian military aid believe. everything he was doing was very likely on the behest of the russian government. and if not on the behest, it was with the knowledge of the russian government when he was doing it. �* , ., ., . ., it. and you mentioned victor boot, he _ it. and you mentioned victor boot. he is — it. and you mentioned victor boot, he is the _ it. and you mentioned victor boot, he is the former, - it. and you mentioned victor. boot, he is the former, known as the merchant of death, a convicted arms trafficker. it is hardly a fair deal, some might say, exchanging him for britney greiner? {iii

might say, exchanging him for britney greiner?— britney greiner? of course objectively _ britney greiner? of course objectively none _ britney greiner? of course objectively none of - britney greiner? of course objectively none of this - britney greiner? of course objectively none of this is. objectively none of this is fair, britney greiner and fair, britney greinerand —— britney griner should not be held like hostages in russia which purports to be a member of the 620, security council and it acts like north korea and it acts like north korea and iran in seizing innocent americans without due process and holding them without due process and rightful cause. so it is a problem from the get go but of course the swap is and of itself not an equivalent situation because victor bout was found guilty in a us court, extradited from thailand after he was on the run for some time. having said that, he has served a heavy chunk of his time that he was sentenced and in fact thejudge time that he was sentenced and in fact the judge who sentenced him in new york made a statement saying she could live with the consequences of a swap because in her estimation, because in her estimation, because he observed such a large portion of his time already, that in essence he had given justice it's fair deal,

more or less.— given justice it's fair deal, more or less. now anthony banen more or less. now anthony blinken and _ more or less. now anthony blinken and sergei - more or less. now anthony blinken and sergei lavrov l blinken and sergei lavrov haven't spoken since before the start of the invasion of ukraine, as faras start of the invasion of ukraine, as far as i'm aware. how surprised are you that this deal is taking place at all? well, again i am not surprised, because the russians very much want this individual. i am a little bit surprised that the secretary of state is getting personally involved, but as your reporter pointed out, there is a lot of pressure on there is a lot of pressure on the white house, on president biden, because of the prisoner swap that occurred recently to free the former marine, who was of course sick, so they said it was a little different situation. but the pressure is there and so the us government is getting involved at the highest levels. it doesn't change the fact that russia is an aggressive human rights smashing, killing machine right now in ukraine and elsewhere frankly, and it doesn't change the dynamic between the united states and russia, but our interests here are aligned, so

a swap should be possible. we must leave _ a swap should be possible. we must leave it there. thank you forjoining us. let's get some of the day's other news. police fired tear gas and used water cannons as hundreds of protesters breached a high—security zone in baghdad and broke into iraq's parliament building. supporters of the powerful cleric, muqtada al—sadr, demonstrated against the nomination of a rival candidate for prime minister. the current prime minister, mustafa al—kadimi, called on protesters to leave the green zone. the world health organization insists the current outbreak of monkeypox can be stopped, if countries, communities and individuals take the necessary steps to prevent transmission. 18,000 cases have now been reported from 78 countries, mostly in europe. there have been five deaths. the director—general of the who says most cases so far were among men who had sex with multiple male partners, and he has called on social media platforms

to help counter harmful and inaccurate information. parts of wuhan — the chinese city where the initial covid cases were recorded — have been placed under lockdown for the first time since the pandemic began. a million people have been ordered not to leave their homes for three days. a new coordination centre has begun work in turkey, part of a complex deal to restart blockaded grain exports from ukraine. it's an effort to ease a global food crisis that is affecting millions of people around the world. more than 20 million tonnes of grain is waiting at ukrainian docks. the aim is to export five million tonnes a month, matching pre—war levels. richard 6alpin reports. from the start of the war back in february, russian forces have been

blockading ukraine's black sea ports — preventing exports of ukrainian wheat and other grains vital for the food supply of many countries around the world. according to officials, there are around 20 million tonnes of grain in ukraine. with fears growing of global food shortages, it seems there may now have been a breakthrough with a deal agreed by the two sides. it is hoped it will be possible for ships to be inspected near turkey, and then guided past ukrainian sea mines, before being loaded with grains and fertiliser. the first shipments are due in the coming days. all this, after turkey's defence minister unveiled a coordination centre in istanbul to oversee the export of ukrainian grains. translation: currently, i the preparation is that ships laden with grain that will leave ukrainian ports.

the work done by the joint coordination centre will contribute to overcoming the food crisis affecting the whole world. the un, ukraine and russia have all said they expect exports to begin in a few days. but russia's deputy foreign minister andre ludenko has warned the deal could collapse if the obstacles to russia's agricultural exports are not promptly removed. richard 6alpin, bbc news. stay with us, still to come, britain prepares for the athletes, showing off birmingham city's heritage. cheering. the us space agency, nasa, has ordered an investigation, after confirmation today that astronauts were cleared

to fly while drunk. the last foot patrol in south armagh, once an everyday part of the soldier's lot, drudgery and danger, now no more after almost four decades. if one is on one's own, - in a private house, not doing any harm to anyone, i don't. really see why all these people should wander in and say, - "you're doing something wrong". six rare white lion cubs on the prowl at a worcestershire wildlife park, and have already been met with a roar of approval from visitors. they are lovely and sweet, yeah, they're cute. this is bbc world news — the latest headlines: the us and chinese presidents are to talk on the phone as bejing warns washington it will bear

the consequences if house speaker nancy pelosi visits taiwan. the united states says it has offered russia a deal aimed at freeing the american basketballer brittney 6riner. final preparations are under way for the 2022 commonwealth games, held this year in the english city of birmingham. over 11 days, more than 5,000 athletes from 72 nations and territories will compete across 19 different sports. this year's event is historic for a number of reasons. it'll feature the largest number of events for women and pa ra—sport athletes. it's the first multi—sport event to award more medals to women than men and it's the first major multi—sport event that's carbon—neutral. one man who knows both the agony and the ecstasy of organising a commonwealth games is the honourable peter beattie. he's the former premier of the australian state of queensland and was chairman of the 2018 gold coast 6ames. he joins us live from sydney.

good morning, thank you for joining us on bbc world. how much work will have gone into this ceremony, this event and how much good england's second city birmingham seek to gain from it? em city birmingham seek to gain from it? �* ., ., , ., ., ., from it? an enormous amount of work has gone — from it? an enormous amount of work has gone into _ from it? an enormous amount of work has gone into it _ from it? an enormous amount of work has gone into it and - work has gone into it and birmingham will be a big winner because it puts birmingham on the world stage and from what i've seen from afar, we have done a magnificentjob in preparing for the commonwealth games. the reality is, when we went through this in the gold coast in 2018, there was an enormous amount of pressure on us enormous amount of pressure on us in that same pressure will be in birmingham because that time is always the usual debate about what is the future of the commonwealth games? we proved that you can run the commonwealth games outside capital cities. we certainly did that on the gold coast. birmingham is doing that as well. of course, it's a major city, but the benefits are

long—term. tourism, people want to invest, they want to see whether commonwealth games are so it is a lot of pressure but it's worth it?— it's worth it? some notable firsts this — it's worth it? some notable firsts this year, _ it's worth it? some notable firsts this year, we - it's worth it? some notable i firsts this year, we mentioned the largest number of women, the largest number of women, the largest number of women, the largest paris sport athlete congregation in the history of this event, it's going to be quite something, isn't it? it is, and what the commonwealth games are sorted on the gold coast has continued in birmingham and that is to stamp itself as something different. it's not the olympics, it is more family friendly event, but itjust allow more family friendly event, but it just allow opportunities for a vents for women in sport. we have the previous record, birmingham isjust beaten have the previous record, birmingham is just beaten us have the previous record, birmingham isjust beaten us in terms of the number of women participating, the same with wheelchair events, we lead the world in it. birmingham is beating that record, all of which is good because it shows something different about the commonwealth games. what the games had to do, dame louise 6ames had to do, dame louise martin, who is deemed by the

way, but it had to do was establish itself a particular niche or special place in world events because there is a lot of competition for this. when i think back, i can see what dame louise martin was doing, she's continued it in birmingham because as you know, this event was originally going to be in south africa and birmingham picked up the baton and they've done a magnificentjob so congratulations to birmingham. 0ne congratulations to birmingham. one thing you didn't have to cope with as it were was the coronavirus pandemic. this is taking place in a post pandemic world, making the excitement and anticipation all the greater. and anticipation all the greater-— and anticipation all the creater. , , ., greater. absolutely. it showed additional pressure _ greater. absolutely. it showed additional pressure that - greater. absolutely. it showed additional pressure that i'm i additional pressure that i'm sure birmingham didn't want but they've handled it really well and you've got to remember the eyes of the world are on birmingham. all the media looking at everything and with all due respect to your profession which is a very important one in a free society, they always look for the good and the mistakes and if anything goes wrong, of

course that is where the pressure comes from everyone in birmingham, from dame louise martin down, we'll be making certain everything goes smoothly but the pandemic would have been a night about the fact they've been able to handle it and handle it well is a real credit.— a real credit. many thanks for “oininr a real credit. many thanks for joining us. — a real credit. many thanks for joining us, peter— a real credit. many thanks for joining us, peter beattie, i a real credit. many thanks for. joining us, peter beattie, from sydney. firefighters have finally started to control the wildfires in california after thousands of people were forced to leave their homes. officials said the fire had behaved unlike any other they had seen. the bbc�*s james clayton returned with one family — to find out what was left. this was the martinez family's favourite place in the world. they called it shangri—la. their home has now been obliterated. aaron has returned to assess the damage. this was my house. this is where i felt

the safest. this is where my office was, my television, my computer, books, and binders. there's just nothing... it's a picture frame, it was a glass frame. i had family pictures in it. it's all the stuff that can't be replaced. it hurts. 6randmother�*s writing, pictures... oh, god. even old answering machines that we saved that we stopped using just so that we could hear grandparents�* voices. it's all gone. meow, meow, meow! aaron's wife, heather, is trying

to look for the family cats. i don't see anything. yeah, i'm trying to hear more than see. they had 15 of them, but none of them respond to the calls. it looked like it was one of the teenage ones, or like teenage to adult. poor thing. her son austin finds one of the kittens. it didn't make it. i've never experienced anything like this, ever in my life, never. the grief is overwhelming for aaron. but the family knew living here was becoming increasingly risky. the climate here, you've lived here all your life. have you noticed it change? it has gotten a lot hotter. a lot hotter and a lot drier. a lot of people we talk to we're like, "should we try and rebuild, shall we stay?" and they say, "we're selling, we're getting out of here." the martinez family didn't have insurance. they didn'tjust lose memories — they lost everything. we're going to

rebuild and we'll be stronger and smarter. but this loss hurts. it hurts a lot. what happened to the martinez family is a danger more and more californians are facing, as it gets drier and drier. james clayton, bbc news, mariposa county, california. a british scientist who helped to inspire the green movement — james lovelock — has died at the age of 103. he was best known for his 6aia hypothesis, the idea that planet earth acts as an interconnected, self—regulating system. 0ur environment analyst — roger harrabin — looks back on his life. the earth. forjames lovelock, a planet with not only creatures and plants on it but a complex, integrated system where even the rocks interact with living things to maintain conditions for life. lovelock called it the 6aia theory, a revolutionary idea named after the greek mother

goddess of the earth. the 6aia idea, these two processes, that is, is the evolution of life in the evolution of the planet are not two processes but one single tightly coupled process. born in letchworth, he became a conscientious objector in the war, ever maverick, ever restless. later he worked out of a converted barn in his home in devon, first with research in medical science on the freezing of animal tissue and then in the �*60s on space science for nasa, looking for life on mars. file footage: there may be a kind of plant, an ice-eater,j with fine, root—like probes, searching not for liquid water but searching the permafrost, reaching down to get at that ice. the multitalented lovelock made the ultrasensitive instruments to gather evidence and invented the equipment to detect a man—made hole in the ozone layer over the antarctic. then you do believe in 6aia?

i doubt believe the earth goddess will defend itself against all dangers. including man? man will always win against nature. lovelock�*s idea that the earth is a kind of single living organism made him a hero to the early green movement of the 1960s and �*70s. it was bound to be taken up as a kind of something almost spiritual for the green age to hang onto. lovelock warned that damage to forests in particular was undermining the earth's capacity to regulate itself as carbon dioxide levels rise, but his support for nuclear power to combat climate change upset many of his own followers. the 6aia theory was ridiculed by many scientists at the time. it is still contentious but it's starting to slip into the academic mainstream. james lovelock lived to be over 100, still predicting an apocalyptic

future for mankind. the british scientist — james lovelock — who's died at the age of 103. hello there. the weather story's looking pretty benign for the next few days. we'll have very little wind around to move the weather along. but one thing you will notice over the next few days is that it'll be warming up, particularly across england and wales. most places will be dry, but there will be some showers around — increasingly so across the north and the west of the country as we move into the weekend. so, we've got this weak area of high pressure just to the east of the uk, rather cloudy high, drawing up some warmer airfrom the near continent. but there is a lot of cloud trapped underneath it, so a rather grey day, i think on thursday. showery bursts of rain continuing to affect parts of northern ireland, northern england, southern

scotland, certainly through the morning, it'll tend to ease down into the afternoon. could see a few showers developing across western areas, most places will be dry. despite the cloud amounts, it'll feel warmer — 22—24 celsius in the south. we could see 20 celsius or so in the central belt of scotland. so, it looks like it should be a dry affair for the commonwealth 6ames�* opening ceremony in birmingham, temperatures at around 19—20 celsius, so feeling quite mild. now, as we head through thursday night, it looks like most places will hold onto the cloud — again, the cloud will be thickest across parts of northern england, southern scotland, where we could see some splashes of rain. but for most places, it will be dry, and a milder night to come, lows of 12—14 celsius. so for friday, we start to see this area of low pressure pushing into the far northwest of the country.

the breeze will be picking up here later in the day, but much of the uk will be under the influence of high pressure once again. so, we'll start off with quite a bit of cloud around friday morning across northern england, southern scotland. that should tend to fizzle away, and we could see the cloud melt away, as well. so, i think there's a greater chance of seeing the sunshine on friday. the odd shower will develop again into the afternoon, but most places will be dry, 25—28 celsius across england and wales, the low 20s across the north — so feeling a lot warmer. saturday's another warm, muggy day, but we will have more cloud around outbreaks of rain affecting the north and the west of the country, as that weather front continues to push its way eastwards. very little getting into the southeast, the areas where we really do need the rainfall. again, it'll be another warm day — low 20s in the north, up to around 25—26 celsius there's always the chance of rain in the north and the west, but tending to stay dry in the south and the east.

this is bbc news, the headlines: the us and chinese presidents are to speak on the phone as tensions soar between the two countries. beijing has warned washington it will bear the consequences if house speaker nancy pelosi visits taiwan. the us says it has made a offer to russia to release basketballer brittney 6riner and former marine paul whelan. secretary of state antony blinken says he'll push his russian counterpart for a response in talks scheduled for the coming days. a new coordination centre has begun work in turkey — part of a complex deal to re—start blockaded grain exports from ukraine.