this is bbc news. i'm shaun ley. the headlines... an admission that flying in the uk may have to be restricted because of climate change. campaigners say a rethink is essential. we know that we have got to reduce our emissions urgently and radically and expanding them is going in the opposite direction. itjust doesn't make sense. theresa may is expected to give more detail in the coming days about leaving downing street, according to the most senior conservative backbencher. the united states is preparing to impose tariffs on almost all chinese imports. fly—tipping in england is up by nearly 40% in the past five years. and councils say nobody has yet been given the maximum sentence. sweating like a nail bomb... cut to

the chase... meet britain's new poet laureate — the west yorkshire born writer, simon armitage. and the dateline london panel ask if theresa may's forthcoming resignation is just a state of mind — or an imminent news event? that's in half an hour, here on bbc news. good morning and welcome to bbc news. concerns over climate change might restrict the growth of aviation in the uk, the government has admitted. a senior civil servant says ministers may have to review their strategy — including plans to expand heathrow. it follows a recent warning from the committee on climate change, which advises government, that the planned increase in aviation would need to be curbed

to control emissionsof c02. our environment analyst roger harrabin reports. flying is on the up and the government has been planning for it to continue to grow. what about climate change, you might ask? under current policy, industry will have to cut more greenhouse gases so aviation can expand. but the government is now considering a plan to virtually eliminate emissions by 2050. and a civil servant has admitted in a letter to a green group that it may have to take note of advice from the independent climate change committee, saying that although people could continue to fly while meeting climate change targets, it was not possible for aviation to keep on expanding. in the end, i think the logic of this is completely inevitable. we know that we have to reduce our emissions urgently and radically and expanding them is going in the opposite direction. itjust does not make sense and i don't think the public want to see the government committing to a plan

that is inconsistent with a safe and prosperous future for all of us. any policy change may affect controversial plans to expand heathrow. it definitely means the government will have to think hard about whether aviation can continue to grow at a time of what parliament calls a climate emergency. with me is tim crosland from the pressure group plan b which received the letter. the group is also taking legal action to prevent the expansion of heathrow. the last stage of that which was just a few days ago, it defeated the high court, which of course can be challenged on review, but thejudge said none of the climate change criteria was applicable, that the law did not recognise these challenges at all. that is part of the problem? very interesting timing, the morning we got that bad news and then by the afternoon parliament had accepted we were in a state of climate emergency and a few hours later shortly after midnight the climate change committee which

is the independent experts advisory body for the government said we have got to get the uk to net zero emissions by 2050 so two very fundamental changes since the judgment last week. but to meet that emissions target, it will need some fairly dramatic changes and i wonder how you think we get from a to b in this context? the committee has said it is necessary to get there, not that we have a choice or it is desirable. how do we do it? it is urgent and radical reductions of emissions, and then action to extra ct c02 emissions, and then action to extract c02 out of the atmosphere which is planting, reforestation and rewilding the countryside which has all sorts of benefits. i was talking to the prime minister of iceland a few days ago and she said exactly that, but she had to acknowledge coming from the country she does

that she has huge demands to provide cheap energy and an industry which needs to keep going in order to employ people and she has an island relatively small but where there are more cars than people and she said it is going to be very hard to get people to change their behaviour. a lot of politicians say they are environmentalist but asking people to do things we have taken for granted is going to be hard. to do things we have taken for granted is going to be hardm to do things we have taken for granted is going to be hard. it will be very hard, we should have started this project decades ago, but we have left it very late and that has made it harder, but the one thing you don't do is make life more difficult by increasing emissions from aviation which means you will cut even harder in other sectors across the economy, so that is why this seems an obvious thing to do. the expansion, you think that is a problem because it will simply put more pressure on other parts of the economy? hugely expensive and we will end up not being able to fly more anyway. one more question

relating to that, given this problem, if you do it in one place, someone else has got to make up the slack, but these problems are global, and even if we reduce our climate, the strain we are putting on the climate, other countries are flying even more, india, china? the first thing we have to do is live up to our claims to climate leadership, we are telling people constantly we are leaders and the direction we are leading is over the cliff edge, that isa leading is over the cliff edge, that is a bad start, and if people take us is a bad start, and if people take us seriously, within a day of the uk parliament declaring a climate emergency, ireland had done the same thing and so if we lead the way, others will follow. thanks for joining us. two men will appear in court later as part of the investigation into the murder of journalist lyra mckee. the men, aged 51 and 38, have been charged with riot,

petrol bomb offences and arson of a hijacked vehicle. ms mckee was shot dead while watching disturbances in londonderry last month. dissident republican group the new ira said its members carried out the killing. houthi rebels in yemen say they've begun withdrawing from three key ports, including hodeidah which handles most of the country's imports. the un says it's the first practical step towards implementing a ceasefire agreed in december. bill hayton has more. this is the port of hodeidah, a lifeline for yemen's hungry people. food aid passing here keeps more than 20 million alive. this and the two smaller ports nearby have been occupied by the houthi rebel forces since 2014, and then bombed and blockaded by the saudi led coalition. the result of the fighting has been what the united nations calls "the world's worst humanitarian crisis. " under a ceasefire agreed last

december, the houthis was supposed to hand over the port to the un within weeks. that would have allowed peace talks to proceed. however, continuing fighting around the city has blocked progress, until now. the houthis have announced a unilateral withdrawal but yemen's recognised government has criticised the move, saying military withdrawals need to be verified and further steps need to be taken, such as clearing minefields. if everything goes to plan, the western—backed coalition could make similar moves, which might then open the way to peace talks. yemen is still a country at war, and in desperate need of aid. fully opening these ports would allow some of that suffering to be eased. the chairman of the 1922 committee of backbench conservative mps — sirgraham brady — says he expects theresa may to give more detail in the coming

days about her plans to leave downing street. the prime minister is due to meet the committee's executive next week. 0ur political correspondent, jessica parker is here. she might give them more details but that doesn't mean we will find out. well, i think there is enough of them on the committee that some journalists will find out roughly what she might have said, but we don't know for sure that she will walk into the room and say, this is the date i'm off, spread the word. that is potentially unlikely, and theresa may really still wants to try and secure some kind of brexit legacy, namely securing phase one of brexit, the divorce settlement, getting the withdrawal agreement through parliament, but some say if that doesn't happen we need some kind of unconditional timetable for theresa may's departure. graham brady chose the important 1922 backbench committee and he has been speaking to the week in westminster programme and he says he understands why the prime minister might be reticent to set an exact timetable.

i don't think it is about an intention of staying indefinitely as prime minister or leader of the conservative party. the reticence is the concern that by promising to go on a certain timetable it may make it less likely that she would secure parliamentary approval for the withdrawal agreement rather than more likely. jeremy corbyn seems keen to remind us jeremy corbyn seems keen to remind us that he is still the labour leader are not going anywhere soon and he has a new policy launched? —— and he has a new policy launched? —— and not going anywhere. he has a new policy regarding the minimum wage, and labourare policy regarding the minimum wage, and labour are very pleased about their legacy of the minimum wage act, jeremy corbyn says that those under 18 should get the real minimum wage of £10 an hour, there should be equal pay for equal work, he is speaking at a youth event in birmingham to launch that policy.

the conservatives have said jeremy corbyn cannot be trusted with the economy and what is important is that young people are in work, and business leaders have raised doubts over this suggesting it could mean that younger people under 18 are less likely to get employed if they are being paid exactly the same as a 30—year—old who has the same experience —— who has more experience. thanks forjoining us. they're the world's two biggest economies, engaged in a trade war that's threatening to escalate. china's vice premier has denied trade talks with the united states have disintegrated — despite the failure of discussions in washington. liu he said that setbacks were inevitable. the two sides have agreed to meet again in beijing. the united states has now imposed 25% tariffs on some chinese goods — and is working to impose tariffs on almost everything it imports from there. here's our north america editor, jon sopel. a bell can signify celebration but it also can ring out a warning and todayit it also can ring out a warning and today it felt like the latter after donald trump imposed much higher

ta riffs donald trump imposed much higher tariffs on chinese goods coming into the us. and he fired out a warning to china, that he is digging in for the long haul. he said on twitter... the chinese are in washington in the hope of concluding a deal, their lead negotiator said increasing ta riffs lead negotiator said increasing tariffs hurt everybody. translation: icame tariffs hurt everybody. translation: i came here with sincerity in the special circumstances to engage in rational discussions with the us side and of course we believe that raising tariffs is not a solution to the problem, it will be harmful to china, the united states and the whole world. donald trump has been accused of being too trigger—happy when it comes to tariffs, too keen to start a trade war, but on this significantly the democrats are

behind him, they are urging him to remain tough, because when it comes to trade and china there is a feeling here that they have been allowed to get away with too much for too long. the talks have broken up for too long. the talks have broken upfor for too long. the talks have broken up for the time being without the agreement, and the treasury secretary sounding decidedly guarded about how they have gone. they were constructive discussions between both parties and that is all we are going to say. this factory in the south of china makes wi—fi routers, millions of them, many earmarked for the us market but now with new ta riffs the us market but now with new tariffs those sales are in doubt. like everyone else around it were, this company thought a deal was imminent, that the sides would bridge their differences, but last weekend the us president accused beijing of ratting on the deal to open up the chinese economy to us goods. in the middle of this of this, us farmers, who have been hit

by retaliatory tariffs, they are desperate for a deal as soon as possible. the only thing that will help us is if he makes a deal and if china comes in and guarantees to buy xamount of china comes in and guarantees to buy x amount of bushels. us consumers are going to find a range of products costing more in the shops and if this carries on it will be the global economy that will suffer. the headlines on bbc news... concerns over climate change might restrict the growth of flying in the uk, according to a senior civil servant. theresa may is expected to give more detail in the coming days about leaving downing street, according to the most senior conservative backbencher. president trump has ordered tariffs to be imposed on almost all chinese imports, after a second day of trade talks ended without agreement. fly—tipping has increased by almost 40% in the past five years according to councils in england.

the local government association said nobody convicted of fly—tipping since 2014 had been given the maximum penalty of a £50,000 fine or a year in prison because of funding pressures. the government says they've strengthened local authorities‘ enforcement powers. we can now talk tojohn read, founder of the organisation ‘clean up britain', he joins us from warwick. this must be one of your regular baines, the amount of fly—tipping? absolutely. very sad for this country and we know we live in a beautiful country but there are significant people who treat it really badly and i can only describe it as environmental vandalism. it is a terribly sad thing. you say environmental vandalism and we cannot preclude the fact there are people who just dump their rubbish by the side of the road, but the problem seems to be a bit more organised than that? there are different levels of fly—tipping, it

isa different levels of fly—tipping, it is a generic term but at the most serious and, around london there are serious and, around london there are serious organised crime who are involved in fly—tipping and they can earn up to £25,000 for fly—tipping sometime during the week or whenever people are not around, so there that level, and at the other end of the spectrum there are people who get most carrier licences from the environment agency and who offer to dispose of peoples waste, so there are different scales. on the question of licenses, this is the kind of thing where if someone is a bit suspicious why this nice young chap ina bit suspicious why this nice young chap in a van is offering to take their rubbish and only charging 20 quid and he says, i got a licence to do it, surely that should give you reassurance that it will be put somewhere safe? it is a very good point, it is reasonable to assume that, but this is part of the

problem, it is anybody, anyone can get hold of a waste carrier license from the environment agency, they cost £2114, there was a story a couple of years ago where a yorkshire terrier who was owned by a man who applied for a licence and got it, and so the quality and stringency of the cheques clearly was not up to scratch —— cheques macro. you cannot assume someone who has a licence, that they will actually dispose of the rubbish sensibly and responsibly, so people have got to be very vigilant and carry out extra checks when people say they have a licence. in an age, you were talking about london, with organised gangs, that there are not more people being prosecuted given that we live in a time when cctv is everywhere and the chances of catching people must be much higher. what is stopping proper enforcement? inevitably like so many things, a

matter of resources, councils are cash—strapped and people have got to understand that. this is not a political point, this is a fact, councils throughout england have seen 35% reductions in their budget since 2010 and their ability to enforce in a meaningful way has been severely hampered, so we are going to get serious about this, and they need additional resources. i have no axe to grind but we all want to see an example made of people who are behaving badly and the law exists at the moment, you can get up to a £50,000 fine for fly—tipping and you can also in theory be given five yea rs can also in theory be given five years in prison. we need to be more serious and grown—up about this, and start imposing sentences so we send out a very clear message to people who are engaged in this highly anti—social behaviour which is a serious risk for them if they get caught and if they do they will get

the full force of the law coming down on them because at the moment it hasn't happened. john, thanks for joining us. simon armitage has been named as the new poet laureate, a role that lasts 10 years. the west yorkshire writer says he wants to use the role to ensure poetry embraces major global issues, including climate change. i asked him how he views the role. it has really changed, if you go back a few hundred years it was a very mysterious post, it was a job for life and on occasions people would be obliged to write to commission for royal occasions and there is still some of that element attached to it but it has really been modernised over the last two decades, since it became a decade—long appointment. it is more about rolling our sleeves up these days, some elements are ceremonial and ambassadorial, but there are other parts which are to do with the promotion of poetry and celebrating

poetry and trying to encourage younger writers to try their hand at it and to identify people who might have a future in poetry. with the title poet laureate that my open a few doors in terms of the lobbying you do on behalf of poetry and the work of your fellow poets? that is the key, the fact it is a royal appointment, it helps to raise the prominence of this post and if the role is about making noises and asking questions, lending a voice to certain ideas and ideologies, that association with the monarch i suppose is probably the reason why i'm talking to you this morning. there probably is the reason, when else would we invite a poet onto a news programme? that is a fair comment. it is a busy morning for

many people, on a saturday, i wonder if you could read us something, because you say poetry should be four crazy times as well as calm times. it is a poem about climate change and clean air, something you we re change and clean air, something you were talking about earlier. in praise of air. i write in praise of air, iwas praise of air. i write in praise of air, i was 605 when a conjurer opened my knotted fist and i held in my palm the whole of the sky. i carried it with me ever since. let air bea carried it with me ever since. let air be a major god, it's being and touch, its breastmilk always tilted touch, its breastmilk always tilted to the lips, both dragonfly and boeing dangle in its see—through nothingness. amongst the jungle board bric—a—brac i keep a padlock to treasure chest of empty space and on days when thoughts are covered in

smog and civilisation covers the street with a white handkerchief over its mouth, and cars blow kisses to our lips from theirs, i turn the key, throw back the lid, breathe deep. my first word, everyone's first word was air. simon armitage, the new poet laureate. follow that! good morning. the sun is shining in hampshire. where england's cricketers have been put into bat by pakistan, in the second one—day international at southampton. you can follow text commentary on the bbc sport website, where there's also live coverage of ireland's tri—nations match against west indies. it will be a field of international stars, this evening, as two european giants meet in newcastle, in the final

of rugby union's biggest club competititon, the champions cup. leinster are the defending champions and they're hoping to lift the trophy for a record fifth time. saracens have won all eight of their matches in this competition coming into the final — and they're aiming for their third title in four years. we have a load of respect for leinster and the quality of the player that they have. it is stacked with british lions and international players. the quality of the coaching they have... it is obvious that the experience that they have and we have some big match experience ourselves and i think that's why everyone is so excited. when you go for match ups across the board, both teams are full of internationals and if there is an overseas player he's normally an international as well. i think it is a fantastic testimony to both clubs that we have both reached the final and everyone is looking forward to it. the spain midfielder ander herrera will leave manchester united when his contract expires at the end of the season.

he confirmed the news on social media, with a goodbye message to fans, saying how special his five years with the club had been. united did attempt to keep him but there was no agreement over term and it's understood he's agreed terms with paris st germain. the race for promotion, to the premier league takes centre stage today, with the first legs of the championship play—off semi—finals. aston villa face west brom at lunchtime, while derby take on a leeds side, who for much of the season, looked to be heading for automatic promotion. we're focused on ourselves and we mustn't forget the fact that we have beaten us twice, the fact that they finished points above us in the league. they are a strong team who looked a certainty to be promoted at one point. the competition is great and they dropped out of that but i still expect a great challenge. we prepare as we would for anyone, we watch them and focus on what we can do.

rafael nadal plays stefanos tsitsipas for a place in the madrid 0pen final later — that's the evening match, but this afternoon, its world number one novak djokovic against dominic thiem, who ended roger federer‘s first clay court tournament for three years. thiem survived two match points against him before knocking out the 20—time grand slam champion in three sets. and simona halep remains on course to reclaim the world number one spot, after beating belinda bencic, to reach the final, where she'll play kiki bertens. victory would take her back above naomi 0saka in the rankings. great britain face 0lympic silver medalists germany in their opening game of the ice hockey world championship in slovakia this afternoon — there's commentary from 315pm on radio 5 live sports extra, as well as the bbc sport website and app. it is the first time in 25 years that britain have competed at the top level of the sport — and they'll also face powerhouse nations the usa and canada later in the tournament. i don't think we have any worry or any pressure, i think we just have to keep together, keep getting better each game, using each game to be that little bit faster,

that little bit quicker in decisions, and learning as we go. that is the most important thing because we have never been at this level. that's all the sport for now but there's coverage of third practice ahead of the spanish grand prix on the bbc sport website. now it's time for the weather. it has been a very turbulent weight, lots of heavy showers and much—needed rain for many because it has been so dry. not great news when i say high pressure is moving in and setting down the weather but it means we will see more sunshine and more dry weatherfor means we will see more sunshine and more dry weather for the weekend, but with the high pressure establishing itself for the next 11—5 days there won't be much rain, but that does not include today because we have showers around and it has been raining steadily in south—east of the country and east anglia. also showers will pop up across the grampians, but especially in the northern isles, if you are showers across scotland and northern

ireland, i miss will respond —— a few showers. we have some heavy showers still around across england and the wales marches, not as intense as they have been, but still intense as they have been, but still intense enough for a rumble of thunder —— the welsh marches. it is colder tonight more widely, it will be more widespread the ground frost so gardeners beware, and because we have the high pressure and the winds are light, that is worth bearing in mind until eight o'clock and then it clears away, but apart from that and eat chill first in temperatures will rise quite quickly tomorrow in the —— and the chill first thing. temperatures will be higher than they have been, higher than today, they have been, higher than today, the wind will be lighter so it will feel warm and there is just the outside chance of a shower over the hills. next week about the high pressure remains, so things will

warm and as they warm by day we will not see the risk of frost so much by night but it is still looking dry with little sign of any rain but later in the week it becomes cool as we pick up the easterly wind but for monday there could be more clout in the north, sunshine and hazy, isolated shower, but we are getting into the mid and high teens in the north as one of the south so we have the warmth establishing itself and temperatures into the 60s fahrenheit, peaking on wednesday before the cold east wind comes in and it looks like it would be next weekend before we see any more rain. as ever there is more on the website.

hello and welcome to dateline london. i'm carrie gracie. this week — measuring the risk of american miscalculation on china and iran. also, a pressing question for a british prime minister: resignation — is thatjust a state of mind or an imminent news event? my guests today are david aaronovitch of the times newspaper, maria margaronis of the nation, agnes poirier of french news weekly marianne,

and american writerjef mcallister. welcome to you all. "sit back and watch." the advice from president trump on friday as he hiked american tariffs on chinese goods. but when elephants fight, ants get crushed. should the rest of us sit back or take cover? jef, start us off. well, these are ta riffs of jef, start us off. well, these are tariffs of 25%, rather than a 10%, may hit the american economy in a different way, because i've a lot of chinese products will be frozen out of the american market at that level. that means people will fill it in level. that means people will fill itina level. that means people will fill it in a different way. there will still be repercussions with chinese ta riffs still be repercussions with chinese tariffs on american agricultural goods, sectors have been hit by the trade were in the us and china, but i think this has a likelihood of spreading to a greater degree, and unpredictably, as trade wars do, sometimes. as trump said, trade words are good and easy to win,