this is bbc news. our top stories: donald trump and joe biden trade accusations following reports that the president pressured ukraine to investigate mr biden‘s son. know trump deservt investigated. i know trump deserves to be investigated. he is violating every basic norm of a president. saudi arabia warns iran that it will respond with "necessary measures" to last week's attacks on its oil installations. cheers for the teenage activist greta thunberg as she arrives at a youth summit on climate change in new york, ahead of the un general assembly next week. 75 years on, one of the last surviving veterans of the world war ii battle of arnhem takes to the skies to remember those who died.

hello, and welcome to bbc news. the us democratic presidential contender, joe biden, has accused donald trump of an overwhelming abuse of power. it follows reports he tried to pressure ukraine into opening a corruption investigation against mr biden and his son. president trump has not denied the reports, claming: "it doesn't matter what i discuss." this is what mr biden had to say about the affair a litte earlier. i know trump deserves to be investigated. he is violating every basic norm of a president. you should be asking him the question, why is he on the phone with a foreign leader, trying to intimidate a foreign leader, if that's what

happened. but appears to be what happened. but appears to be what happened. you should be looking at trump. trump is doing this because he knows i will beat him like a drum, and he is using his abuse of power and every element of the presidency to try to do something to smear me. that was a pretty fired up joe biden a couple of hours ago. david willis in washington has been unpacking the background to the story. what this row centres on is a telephone conversation which clearly took place during the summer between president trump and the new leader of the ukraine, and it's been reported that on a number of occasions, possibly as many as eight occasions during the course of the telephone conversation, mr trump urged volodymyr zelensky to investigate the son ofjoe biden, who worked for a ukrainian gas company. now, there are suggestions that joe biden, as vice—president of the united states, threatened to withhold international aid money to ukraine unless a prosecutor he was investigating the gas company that his son worked for was sacked. now, today on twitter, mr trump dismissed the controversy as fake news, calling it "a perfectly fine and routine

this conversation is thought to have formed the basis of a whistleblower complaint which went to the inspector general of intelligence a few weeks ago but was suppressed from being released to congress. it is thought that was following pressure from the white house. now, today on twitter, mr trump dismissed the controversy as fake news, calling it "a perfectly fine and routine conversation with the ukrainian leader in which nothing was said that was in any way wrong." but there are reports that mr trump urged the leader of ukraine to meet with his personal lawyer, rudy giuliani, to look into suggestions regarding the activities ofjoe biden‘s son, hunter biden, who worked for a ukrainian gas company. there are suggestionsjoe biden, as vice president of the united states, threatens to withhold international aid money to ukraine unless a

prosecutor who was investigating the gas company that his son worked for was sacked. that really is the very detailed, torturous background to all of this. it is a complicated subject. but it has got president trump and his democratic rival, joe biden, at loggerheads, both in social media and in interviews with the press. we often see this in politics, don't we, and in us politics, don't we, and in us politics especially, when donald trump is involved, this sort of "he said, she said" merry—go—round. do you think there is any chance the house of representatives will do whatjoe biden asks and investigate this? interestingly, they have subpoenaed the acting national security advisor to give evidence before them next week. the head of the house intelligence committee, a man called adam shift, has warned that if this complaint in its entirety is not presented to congress, then he may pursue legal

action to enforce that situation. so that backs the white house into something on a corner. president trump, of course, argues as i have mentioned that this is all fake news and that the democrats are spoiling for something on him, following what he sees as the failure to basically nail him with the robert mueller investigation, the special council enquiry into russian meddling in the last election. that was david willis, speaking from washington. let's get some of the day's other news. the islamic state group says that it carried out a bomb attack on a bus near the iraqi city of kerbala that killed 12 people. iraqi police say an explosive device was planted on the bus and detonated at the northern entrance to the city, a major site of pilgrimage for shia muslims. the interior ministry in kazakhstan says 57 people have been arrested in the country's two main cities after attending opposition protests

against chinese influence in the country. beijing invests heavily in kazakhstan‘s energy sector but is accused of under—paying its kazakh staff. a 5.6 magnitude earthquake has struck albania close to the capital tirana. reports say 50 people are being treated for injuries at the main hospital. the defence ministry said it was the most powerful earthquake in 30 years. tensions in the gulf are rising once more, in the aftermath of the bombing of a saudi oilfacility. the saudi foreign minister has accused iran of being responsible for the attack. and the united states, an ally of riyadh, has announced it will send troops there. the bbc‘s frank gardner is in saudi arabia and sent this report. punctured, bombed, and blasted, the graphic aftermath of last weekend's missile and drone attack on saudi oilfacilities.

the pinpoint attack, quickly blamed by the us on iran, temporarily knocked out half saudi arabia's oil processing capacity. iran denies responsibility, but today, this revolutionary guard's commander issued a fiery warning against any possible retaliation. translation: a limited aggression will not remain limited. we will punish you. we will follow you. we have shown we will not rest until the aggressor is destroyed. the us has held off military action, instead, slapping sanctions on iran's central bank and its sovereign wealth fund. it's also sending additional troops to defend saudi arabia. at a press conference today in the saudi capital, the minister of state welcomed this move. in addition to the us, we've also had very strong military cooperations from a number of other allies, in particular the united kingdom, and i think that the challenges we are facing now call for enhancing security cooperation between the kingdom of saudi arabia and its allies and partners. the saudi government has welcomed

the deployment of additional us troops to bolster its air defences. now is the time, said the minister, for his country to work more closely with the us and britain. iran, he said, was to blame for all the recent missile attacks on his country. only days ago, president trump said the us was "locked and loaded", but the saudi's called for restraint, and washington's measures appeared defensive. but with tensions high, it may not take much to change the president's mind. frank gardner, bbc news, riyadh. after friday's climate protests around the world, the activist who inspired them, greta thunberg, has attended a youth summit on climate change in new york. the meeting, hosted by the united nations, discussed what actions should be taken to tackle climate change. thunberg praised herfellow climate activists, ahead of her scheduled address to the un general assembly on monday. yesterday, millions of people across

the globe marched and demanded real climate action, especially young people. we showed that we are united, and that we young people are unstoppable. that was greta thunberg. the un secretary—general, antonio guterres, has also been at the youth summit, and said he's been listening to their concerns. first of all, it is an enormous pleasure to be a keynote listener, where we can listen to meaningful things like the words we heard. and indeed, i have been more times keynote speaker than keynote listener, but that is one of the problems of world leaders. is that they talk too much and they listen to little. applause. and it is listening, but we learn. and is given the possibility for all those that represent today's world to

speak and to have their voices be pa rt speak and to have their voices be part of the decision—making processes , part of the decision—making processes, that we can move forward. the bbc‘s nada tawfiq has been meeting activists at the summit. she gave us this update. well, this summit is the largest gathering of use on climate change, here hosted by the un. —— gathering of youth. rittenberg was there, addressing the young activists and saying that their protest showed they were united and unstoppable. 1000 youth from all across the world here, representing notjust the well‘s just polluters, but also small islands which i thought the real effects of rising sea levels. also there was secretary general antonio guterres, listening to the youth, saying that his generation had failed them but they could move with a plea for action. now, one of the climate activists who was right there on the stage with them is kamal kumar, an activist from fiji.

this is very personal to you, because you really wanted to give a voice to those countries who are already feeling the effects of climate change? yeah, exactly. as i have mentioned, the pacific people, the pacific island countries, the first ones to be feeling the impact of climate change. we needed to bring it out there to show the world what the reality of climate changes, people have started suffering. it is not just words, people have started suffering. it is notjust words, solutions that people have started suffering. it is not just words, solutions that you can sitand not just words, solutions that you can sit and talk about. it is something that needs urgent attention and urgent implementation to curb these issues. what are some of the effects you are already seeing in fiji? the first one, which i think is well known, is the sealevel rise. people have already started seeing the impacts about. small island countries have started experiencing them, king tied saw the rise of the sea levels, whereby their homes are being affected. —— king tides. in fiji we have relocations that have already taken place. the government has identified about a0 villages that might need to be relocated in the next five or ten

yea rs. be relocated in the next five or ten years. you were really strong on saying that leaders have not done enough and youth will hold them accountable. do you want to them do? what's the youth want is, we want them to take realistic measures, realistic action. i guess when it comes to the discussion around climate change it is mostly general, this is what we might experience in the next few years, this is what we might feel eventually, but for us in the pacific it is something we are really experiencing right now, and we wa nt really experiencing right now, and we want them to take urgent actions, urgent climate action, urgent decisions, urgent implementation plans that will really ensure that the targets they have set in place to reach net zero emissions by 2050 will actually be achieved by them. stay with us on bbc news. still to come, the all blacks show their class in japan. we round up another day of action at the rugby world cup. ben johnson, the fastest man on earth is flying home to canada in disgrace.

all the athletes should be clean going into the games. i'm just happy that justice is served. it is a simple fact that this morning these people were in their homes. tonight, those homes have been burned down by serbian soldiers and police. all the taliban positions along here have been strengthened, presumably in case the americans invade. it's no use having a secret service which cannot preserve its own secrets against the world and so the british government has no option but to continue this action even after any adverse judgement in australia. concorde have crossed the atlantic faster than any plane ever before, breaking the record by six minutes.

this is bbc news. the latest headlines: the democratic presidential frontrunner, joe biden, has accused donald trump of an overwhelming abuse of power over reports that he tried to put pressure on ukraine to launch an investigation against him. the saudi foreign minister says suitable action will be taken once the investigation into last week's attacks on oil installations is complete. he again pointed the finger at iran. a sit—in is being held in hong kong to mark two months since an attack by pro—beijing vigilantes on protestors and commuters left a5 people in hospital. earlier today, police fired tear gas on anti—government protestors when a rally in the district of tuen mun turned violent. thousands marched from tuen mun park to the government offices there in a demonstration that had been approved by police. the march was initially called in response to pro—beijing protestors tearing down colourful anti—government posters, known as lennon walls afterjohn lennon. it's the 16th consecutive weekend of protests in hong kong. this is the moment that protestors

threw molotov cocktails at riot police. you can see the police fired tear gas in attempt to disperse them. here are the riot police arresting protestors. the police have previously been criticised for their heavy—handed approach. and here's a barricade that was set on fire by protestors earlier. 0ur correspondent stephen mcdonell is in hong kong. today's rally was cleared. that is, they had official permission. and again it has turned into one of these street battles. this week, a senior police officer told us that they are stretched to the absolute limit. they say they

are handling this crisis, but if there was to be a greater escalation there was to be a greater escalation the only way they could deal with that would be to eat into other areas of their police work. as the police detained protesters, there is a lot of attention from the local media. this is a speciality case given the amnesty international report that was released a few days ago, accusing the police of excessive force. now this is something the officers here deny. but, given that, when they apprehend people, the media are on them. after being cleared out of other areas, protesters have come here to mark two months since triad connected gangs ambushed activists and, using home—made weapons, busted them in the train station. now they have

accused some police officers of colluding with those gangs. there have also accused some pro— abating the politicians are being linked to the politicians are being linked to the underworld. this is why they wa nt the underworld. this is why they wantan the underworld. this is why they want an independent enquiry, which is one of their key demands —— pro— abating. you can hear them calling out now, five demands, not one less. steve mcdonell reporting from hong kong —— steve donnal. the labour leaderjeremy corbyn has prevented an attempt by left—wing activists to oust his deputy tom watson on the opening day of his party's conference. the party leadership says mr watson's role will be reviewed rather than abolished. but labour's divisions over brexit also surfaced on the first day of a conference which had been designed to demonstrate unity. 0ur political correspondent iain watson has been following the day's events in brighton. the day began in relative calm after a stormy night. labour's deputy leader had almost been swept from office by left—wingers who saw him as disloyal — butjeremy corbyn was not in on the plan, so to avoid damaging pre—election row he had to stop some of his usual supporters from abolishing the post.

we are going to consult on the future of diversifying the position to reflect the diversity of our society. tom watson is the deputy leader of the party and i enjoy working with him. tom watson leads a group of around 100 moderate mps and arriving this afternoon he accused some on the left of derailing any hope of unity. i am disappointed, because i hoped we could unite this week and i am still hoping that and that is what i am hoping to do. it is fair to say that the atmosphere has been heating up inside the labour party. make no mistake, if tom watson had been forced out of his position as deputy leader we could have seen a pre—election crisis in the main party of opposition and potentially even a split. this row has almost overshadowed the arguments about brexit. almost. labour's ruling national executive drew up its preferred brexit plan today. if passed by the party conference it

would mean that a labour government would negotiate a new brexit deal in its first three months. they would then hold a referendum on this deal within six months but with the option to remain on the ballot paper. but crucially this would mean the party wouldn't decide whether to back leave or remain until after the general election. what corbyn is effectively saying is, i will speak for everyone, i will negotiate a deal much better than theresa may's. we will stop the disaster of a no dealfrom borisjohnson and we will take that back, let the people decide. the trouble is that these people have already made up their mind without seeing any leave deal. even members ofjeremy corbyn‘s own top team say the party should campaign to remain in the forthcoming general election. what do you think of the of labour campaigning for a labour leave version of brexit?

we must make sure that we lead the campaign to remain. but if the party does not do this, tonight the local labour mp claimed that labour would be facing an electoral disaster. 0ur place is in europe and in the world, and if labour does not stand for that, we will have the same results that happened in the european elections. we will be third or fourth. an encouraging end for a day that had not entirely gone to plan. jeremy corbyn wants to keep his fire trained on the enemy outside rather than inside his party. new zealand have reminded everyone why they're the champions they are after a clinical performance against south africa in their opening match at the rugby world cup. the springboks looked good early on, until the all blacks exploded into life, running out 23—13 winners. katie cornell was watching in yokohama. well, many believe there could have been an upset here given south

africa's form coming into this tournament. new zealand would ruthless. they showed why they are the favourites to live this trophy for the third time in a row. they we re for the third time in a row. they were put under real pressure from south africa in the first 20 minutes, south africa getting the first points on the board. new zealand hit back almost immediately with two quick tries. from george ridgeon scott barrett. beauden barrett pulled the strings from fullback. south africa were down by 14 fullback. south africa were down by 1a points at halftime. they did improve in the second half. they responded with a quick tray of their own, a poachers try from pieter—steph du toit. new zealand managed to keep them at arms length and they won by 12 points in the n2 round off a morale boosting victory from them. they have never lost a world cup bull much. that record continues. in south africa, if they can improve, the final will be held here in yokohama, so there is the does that these two teams could meet again before too long.

in the day's first game, 2015 finalists australia made a shocking start against fiji in their opening pool match, but ran in four second half tries as they fought back to win 39—21. 0ur reporter tulsen tollett was in saporro. well, it was a full house here in the saporro dome for one of the two contests here this weekend. in the end it was australia who won against fiji by 39—21. if you had watched the first 15 minutes or so you would have wonder what was going on. the two wingers for fiji were making inroads. fiji were ahead at halftime, they went further ahead just after the interval. an will genia came into the pits, ten or 15 minutes into the second half, the wallabies veteran, this scrum half a game of the best, change the complexion of the game. got the line—outs working, he got them moving forward, and the hooker who picked up man of the match scored two of those tribes. it was a bonus point for the wallabies —— tries. in this contest they got to the front in the second half. whales are also

in this pool as well. that will be fiji's final game. it is all too playful still for them. they make it through to the water finals. they have only been to that stage twice in the past. for the wallabies, they just peek around world cup time and they peaked in the second half of this type picked up a much—needed victory. and finally in the day's third game, france held off a second—half comeback by argentina to win a gripping world cup match in tokyo — winning by 23 points to 21. it was the largest airborne operation of the second world war. the battle of arnhem was the failed bid to recapture a key bridge held by the germans in an attempt to bring an early end to the war. more than 15 hundred british service men were killed. 75 years on they've been remembering 0peration market garden and those who lost their lives. jonathan beale has more. sandy kaufman was preparing to jump into battle 75 years ago. now aged 97 he is one of the last of the surviving arnhem veterans leaping into the skies again. in 19aa, he was taken prisoner soon after he landed, but today he was being welcomed by applause, rather than enemy fire.

does it bring back memories? not really, no. laughter. british and nato troops joined in the drop to remember the bold plan to capture a series of bridges behind german lines. still, just a fraction of the allied troops that took part in what was the largest airborne assault in history. arnhem is the story of heroic failure. the british never managed to take the bridge. 1,500 were killed and thousands ta ken prisoner. this will probably be one of the last big events witnessed by the ever dwindling band of veterans who landed here 75 years ago. but those they came to liberate say they will never forget the sacrifices they made.

75 years later and we are here with our children, so it is important that they know, where we remember the war and everyone who fought for us, for ourfreedom. i think it is very important. it should be remembered for many, many years. that is why we are here. it wasn't just locals, but also relatives and royalty who came to honour their bravery. along with a few surviving veterans likejohnjefferies, who still comes to remember the friends he lost. so many men wiped out. i couldn't believe it. there may be fewer of them with each passing year, but the dutch who they came to liberate, say they'll never be forgotten. jonathan beale, bbc news, arnhem. remembering the 75th anniversary of the battle of arnhem. that is just

about it from us. you can reach us on twitter. thanks for watching. do stay with us on bbc. hello there. saturday brought us another warm, dry september day across much of the uk. things are 110w across much of the uk. things are now changing from sunday and through the course of this coming week it is a more unsettled picture. rain or showers at times through the day on sunday, things will start to feel a little bit cooler than they have done recently, too. the reason for thatis done recently, too. the reason for that is because we have pressure on the north—east —— eastern uk. we have further low pressure systems waiting out in the winds for later on in the week. so we start off sunday morning with some heavy showers, particular gross south—west england from the midlands, wales, northern ireland, some thunderstorms likely was some of those showers. they drift their way northwards and

ease with across the uk, followed by another band of rain. some drier and brighter whether working in from the south—west in the day. so a bit of sunshine around. think northern and eastern scotland probably holding onto the sunshine for a good part of the day. 18—23 degrees, the cooler thanit the day. 18—23 degrees, the cooler than it has been, but reasonably warm for some eastern areas where you do see the sunshine at times. the showery rain should start to clear away towards the north and the north—east as we move through sunday night and into the early hours of monday morning. there could be some mist and fog patches around first thing monday morning. it will be a slightly resonate sunday night compared to this current note. but still frost free around 11— 13 degrees. now heading on into monday and is next area of low pressure moving in, that's associated with the remnants of ex— hurricane humberto, so it will bring some wet and some windy weather eventually to the uk, but nothing unseasonable here. in fact, the uk, but nothing unseasonable here. infact, much the uk, but nothing unseasonable here. in fact, much of monday look dry and fine with some sunshine, still a bit cloudy and damp across scotland. late in the day that is

where we see the wind speaking up in the rain arriving across south—western england and wales and northern ireland, too. central and eastern england the sunshine through much of monday, 20 degrees also here. typically the high teens for most of us. certainly cooler than it has been recently. more blue on them up has been recently. more blue on them upfor has been recently. more blue on them up for tuesday. more rain. some of it could be quite heavy boundary, too. also still quite breezy, especially towards the south. some sunny spells in between the showers, so sunny spells in between the showers, so not a washout on tuesday. it is certainly feeling cooler than it has done recently, with most of us seeing temperatures at17— done recently, with most of us seeing temperatures at 17— 18 degrees also on tuesday. and then with low pressure not far away as we look through the rest of the week, plenty of showers symbols on the album chart for the capital cities of the next five days or so. showers around, particularly across parts of scotland, northern ireland, too. some sunny spells for the south and east, but an unsettled story for much of the week ahead. bye—bye.

this is bbc news.

the headlines: the democratic presidential frontrunner, joe biden, has accused donald trump of an overwhelming abuse of power. if follows reports that the president tried to put pressure on ukraine to investigate him and his son. mr trump insisted his talks with foreign leaders were "always appropriate." saudi arabia has vowed to take appropriate action once the investigation into last week's attack on its oil installations is complete. the saudi foreign minister has insisted that iranian weapons were used, and has rejected the claim by houthi rebels in yemen that they carried out the attack. and commemorations have been held to mark the 75th anniversary of the largest airborne assault in history. the battle or arnhem in world war ii saw around 35,000 allied soldiers land by parachute and gliders behind enemy lines. now on bbc news, it's time

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