Also on the programme. President trump has admitted he repeatedly asked his ukrainian counterpart, who was seeking military aid from america, to investigate his political opponentjoe biden. So, what are democrats going to do about it . The uk launches its biggest peacetime repatriation in history, with hundreds of thousands stranded following the collapse of travel company thomas cook. Hello and welcome. Im Michelle Fleury in washington and Christian Fraser is in london. Donald trump made an unexpected but fleeting visit to the un Climate Change summit in new york today. Its arguably the most important gathering on Climate Change since the Paris Agreement was signed in 2015 a deal that donald trump walked away from. The short time the president spent in the Conference Hall reflects his obvious indifference and also the scale of the challenge ahead. Had he been in the hall for the opening of the summit, he would have heard the un secretary general speak of the apocalyptic impact Climate Change will have on the planet. The Swedish Environmental campaigner, Greta Thunberg, told the leaders they had betrayed her generation. All you talk about, she said, is money. And fairy tales of eternal economic growth. Nick bryant reports from the summit in new york. A sweltering september scorcher in new york city not much sign of autumn here. And it hasntjust been a long summer, but north of the equator, the hottest ever on record. So, today at the riverside headquarters of the united nations, an urgent Climate Action summit. This global body, once more, sounding the alarm. The world is losing the race against Climate Change. Applause. In this air conditioned auditorium, the heat came from the 16 year old swedish activist Greta Thunberg. The un hoping to harness whats been called the greta effect her ability to mobilise the young and to shame the old. And my, how she did that today. This is all wrong. I shouldnt be up here. I should be back in school on the other side of the ocean. Yet, you all come to us young people for hope. How dare you . You have stolen my dreams and my childhood with your empty words. And if you choose to fail us, i say, we will never forgive you. For the grown ups in the room it was awkward. Applause and cheers. But they applauded, nonetheless. Mr president . The worlds most powerful adult only briefly stopped by. Greta thunberg watched from the side, scowling, as he arrived. He didnt address the summit himself. He is withdrawing america from the paris Climate Change accord. And he took the chair of at rival event organised by the white house at the un on religious persecution. For once, donald trump was upstaged by a teenager with a furious speech that will echo down the generations. Lets cross live to the un in new york. Laura trevelyan is there for us. Later, some very strong words there from Greta Thunberg, but of course, even as World Leaders prepared to discuss how to address Climate Change, you have got the american president sitting on the sidelines. Absolutely. And, in fact, the Un Special Envoy for Climate Change, formerly the mayor of new york city michael bloomberg, rather aesthetically observed when he saw President Trump sitting there and the whole, he said thanks for dropping by, perhaps the discussions will be useful for you when you come to formulate your policy on Climate Change. It is the elephant in the footti. Change. It is the elephant in the room. The us is the second biggest polluter behind china and ahead of india and the us is rolling back environmental regulations and the president of the United States does not formally acknowledge that human activity may have a role to play Climate Change and here you have the teenagers are standing up to the worlds biggest powers. So it is as one seasoned un diplomat said to me, Greta Thunberg has achieved more in three weeks for Climate Change than World Leaders did in 30 years. You state that teenagers like greta are doing more for Climate Change, are we expecting anything to come out of this or is it going to be another talking shop in which you see politicians essentially bring in the hands of Climate Change, but not agreeing to match action . There were great hopes that china might go further than the Paris Agreement, but the chinese delegate who spoke this morning noted in his meeting that his emissions target, but did not go further. In the s that his emissions target, but did not go further. In the 5 Prime Minister who was having a nice event with President Trump there in the weekend indias by minister committed but did not say that india would reduce its reliance on coal. There are some momentum here, with some of the more less polluting countries promising to take radical steps. What will be remember to today will be Greta Thunberg accusing the older generation of this still in her childhood and destroying herjames. Accusing the older generation of stealing her childhood and destroying her dreams. Doctor michael we have the net zero target that the uk government that we have set in 2050, but on the other hand you have Scott Morrison of australia that follows a protocol agenda and Jair Bolsonaro who is allowing the rain forest and amazon ra i nfo rest allowing the rain forest and amazon rainforest to burn. We need to do something. The un would not allow leaders to speak. Unless they had something to say, interestingly. So thatis something to say, interestingly. So that is the benchmark. One of the talking points of today is exactly why President Trump dropped by. With various diplomats behind the scenes are speculating about why he did that. Is it because President Trump is always wanted to sense the political mood, he does not miss anything and he spends his time on social media, watching tv. He has seen this wave of youth activism. Is he trying to nod in the direction of that by dropping by the Climate Summit, even though he deliberately scheduled a parallel event on the verge the same time . Or was he stopping by because it had a decent relationship with the un secretary general . A parallel event on religious freedom at the same time. A clear split on the world stage, but at least you have the worlds first and third biggest polluters, india and china attending this event. And underscoring their existing pledges, or in a case of india, saying that they will try to move forward on Renewable Energy we re move forward on Renewable Energy were not say much about coal. Thank you very much. Interesting was not i was about whether donald trump might be looking at the polls and, as he shifting . Maybe not. They may be things that were concerned. Let me show you this one. This shows attitudes back to 2005. On the top is attitude to the environment, etc. Look out crossed in 2014. 74 of americans have real concerns about the quality of the impairment, versus 77 who are concerned about the availability of Affordable Energy versus 57 . This is the period in america it is an irony that they had done more fracking and drilling in recent years, particularly since president became the president that the pump prices have started to go down. And if it is going down, then you can be much more relaxed about the availability of energy and perhaps more concerned about the environment. Or whether its a reflection of changing policies going on. It is hard to know what is driving this. One thing that i would say that when you talk about the economics of it all is that behind some of this, when people are feeling a bit of a flash, they had time to care about the environment and the other factor that i would look at, though, is age. People who support Climate Change for most, her most concerned about it, you can see that it is the youngest, aged 18 to 29. That chart there, the third by chart, which shows that 45 to 64 year olds and 65 plus, they are less concerned. Yeah, the other interesting thing, actually, look at the cbso there are some republican scientists shifting to a territory now, which is perhaps why donald trump is concerned. He does not need to adjust his base, he needs those who are in the middle. There is any point well. Those independent voters as well. Britains Main Opposition Labour Party is is agreed there should be another brexit referendum pending a renegotiation. But they are deeply divided over what the partys position should be, in that referendum. And whether it should be spelled out, before the impending general election. The leader, Jeremy Corbyn says the decision should wait until the party knows what the deal is. But grassroots activists at have been pushing for an unambiguous stance, tabling a motion calling for labour to campaign energetically to remain. The shadow brexit secretary keir starmer, who spoke ahead of the vote, said that holding a second referendum would be a priority for a Labour Government. An incoming Labour Government will legislate for a referendum immediately on taking power and hold that referendum within six months. Applause. That is our commitment. And i have a simple message. If you want a referendum, vote labour. Well in the last hour members have endorsed mr corbyns stance to stay neutral while negotiating a new deal. That is clearly candid. Applause. That is that is clearly candid. Applause. That is clearly candid. But the motion was only put to a show of hands in the hall, not an official card vote, and some are crying foul. Lets speak to the labour mp jonathan reynolds, who is from the brexit supporting constituency of staylybridge and hyde. Good to have you with us. You are a real based party and you follow the rules, but today it looked very much like a fudge. No, i think it is not. The policies get the public a final say. It is now more complicated than that. There are clearly different views here, but you would expect that. Look how polarised this country is. I do not think you get as many people together and not have different views on brexit. Getting the public the final say, is i think, now, the only reasonable way that this country can possibly move on. It is if you have come to myself. I wanted to see a deal, but theres simply no agreement and we have seen a more polarisation and getting the public back together to getting the public back together to get a final say on the backs ideal asi get a final say on the backs ideal as i think, frankly, the only way forward. Except, ifinal say on the brexit deal. Except it wasnt all conclusive, said when i put it toa all conclusive, said when i put it to a card valid. Why did that not happen . I was not in the conference floor, but conference is chaired by extremely competent and experienced people. I think wendy nichols, in this case, i have absolute faith that they know how to encompass properly and does know where those delegates would allow you to get away with anything other than fop following the proper process. There we re following the proper process. There were big range of years and this issue but if that is a decision the co nfe re nce issue but if that is a decision the conference floor has taken, that has the decision they had taken. Conference floor has taken, that has the decision they had takenlj conference floor has taken, that has the decision they had taken. I would like to ask you about one ofJeremy Corbyns closest aides and official leaving the party at the end of the year. Basically only way out, he had some pretty stinging, criticism by the party. He had no faith, he talked about a lack of professionalism, competence and live indecency. What is your response to those harsh words . Human decency. It is not fair to talk about Staff Members because theyre not politicians and do not have a decision to come talk and defend themselves. Clearly, a lot of people put a lot into the party and that is why the 2017 election result was so much better for us than many people expected. Im afraid i cannot comment on those individual relationships. I do not think it is better stuff to be the subject of discussion when theyre not politicians and they cannot, the media themselves and defend themselves. Back in february, you said yourself, my is that we should you said your conceptions that. Im good to set in sections that we tried our best. I voted in those indicative votes in parliament. The thing that i had to stretch to get because i tried to compromise and find a way forward , tried to compromise and find a way forward, but if you go back to those discussions about theresa mays deal, people did not supported on either side. The leaflet that went to the door in 2016, on which your constituents voted, said we will implement your decision. And that was on the Campaign Literature in 2015. The literature themselves said this will be negotiated process and we will not lay before it now deals in place a a new deal is in place. I do not think you can use it like that adidas no deal in the basis of that. In 2070 we had in 2017 we said that we would not have fio 2017 we said that we would not have no deal. Which are on the river as intimate as polarisation and i thought people become together but there was a way forward, that there would be enough early voters be satisfied. And enough are some remain people to come with it as well, but we just have to be on a sensor that has failed. People have become much more polarised between revocation one side and no deal on the other. Do not think there is a mandate for either of those things and in that situation, i honestly believe the only way forward is to ask the people are going to vote, this time on a very specific already a great position, which we know with the implement straightaway or against the status quo that we have 110w. Against the status quo that we have now. Good of you to come in the programme tonight. Thank you very much. Thank you. We saw thes position about introducing a 32 arabic being drowned out by its position on brexit. Introducing a 32 hour week. Boris johnson does not speak at the Un General Assembly tomorrow until very late in the evening. It will be a long day. At 0530 eastern time, he will be sent news of a ruling at the Supreme Court in london. Was his decision to suspend parliament for five weeks lawful, or did he do it to stymie the Brexit Debate and in doing so mislead the queen . The feeling among informed observers idid say i did say that he will be up early in the morning. The feeling among informed observers is that the government is on the ropes and is going to lose, which in the words of senior legal figure would be constitutional eruption of volcanic proportions. What would happen then . Our political editorjohn pienaar asked the Prime Minister what he would do if the uks highest court found he misled the queen. Let us see what the justices say. Let us see what the justices say. But i repeat my point that i think there are very good reasons for wanting to have a queens speech. Do you rule out resigning in those circumstances . Im going to wait and see what the judgment is, but i want to stress that this is a government that fully respects the law and fully respects the judiciary. But we also think that it is sensible for parliament to have its say, absolutely, and that is why there is ample time at the end of october for them to do just that. Lets speak to our colleague rob watson who is in brighton at the labour conference. There are days when you do not want to be away from the office. You need to be away from the office. You need to come down. We have the beach here, lots of nice little stores. To come down. We have the beach here, lots of nice little storeslj was not talking about you, i was talking up Boris Johnson was not talking about you, i was talking up borisjohnson all the way over there in new york right. I was inviting you to come to these conferences. I would love to come to brighton, i would love a day out in writing, some of us have to work. La dee da so what happens if it goes against him in the Supreme Court tomorrow and he has over there in new york. That is an easy one, i do not know. I have heard that there are several versions. In many ways, it depends on whether, first of all, whether the judges will unlawful and if they do, what would it be there so called remedy, as it were. There are so called remedy, as it were. There a re two so called remedy, as it were. There are two bits to it. You could say, they have to find that this was a novel and then, are they going to say anything about what should be done . They have to find that this was unlawful. It could be incredibly awkward both politically and personally. Politically it could meana personally. Politically it could mean a rapid return of politicians to westminster doing what politicians do, which is to ask all sorts of awkward questions of the government. And personally, could be because effectively, mrjohnson will have been found to have, essentially, misled, lied to the queen and that is unprecedented. In normal that would lead to resig