President trump has been angrily defending his decision to pull american troops out of Northern Syria a move that opens the way for an attack by turkey on kurdish fighters, long time American Allies in the fight against the Extremist Group the Islamic State, but regarded by the turks as terrorists. Mr trump has repeated his warning to turkey not to take advantage of the withdrawal, threatening to decimate the turkish economy if they go what he called off limits. The kurds have been leading the Syrian Democratic forces, and have been key to defeating the Islamic State extremists in syria. The kurds have reduced areas under is control to virtually nothing, and now hold thousands of is prisoners and their families. President trump and the government in ankara have proposed a 20 mile so called safe zone on the border, to help the return of millions of Syrian Refugees currently in turkey. The kurds see the american withdrawal, which has already begun, as a stab in the back. Our International Correspondent orla guerin sent this report from the border. A pullout at dawn. Us troops leaving observation posts along the syrian border. Washington says only a small number of troops were moved a short distance, but Kurdish Forces fear they are clearing the way for a turkish invasion. Turkeys president was viewing serbian troops today, an honour guard on a state visit, as concerns grow internationally about what he is planning for Northern Syria. Before leaving home, he seemed ready for unilateral action soon. We talked to the Americans Last night, he said. And well keep talking. We have made a decision, and as we always say, we might come suddenly one night. Thats a major threat for these kurdish fighters from the sdf, the Syrian Democratic forces, who have fought street to street against Islamic State, with help from the us. They have been washingtons key allies in battle, but with the us pullout, they believe theyre being thrown to the wolves. They have vowed to resist any offensive and defend their land at all costs. Their spokesman, mustafa bali, told us that an attack by turkey risks giving is sleeper cells a chance to regroup, and even retake some territory. From President Trump, a bellicose warning, via his usual undiplomatic channel, twitter. Just last month, american and turkish troops were carrying out these joint patrols at the border. But now, ankara intends to go it alone, taking the battle to Kurdish Forces that it views as terrorists and a threat to its security. Washington has no intention of getting caught in the crossfire, but there is concern in the us and elsewhere about turkeys next moves. There is a growing sense here, on both sides of the border, that the countdown to a turkish offensive has begun. The pentagon has said that turkey risks destabilising the region and beyond. France has called on ankara not to take any action that could harm the fight against the Islamic State group, and United Nations humanitarian officials have said they are preparing for the worst. Orla guerin, bbc news, on the turkey syria border. I asked michael ohanlon, senior fellow and director of research in the Foreign Policy programme at the brookings institution, how he read President Trumps move. It is the classic how do you read President Trump . We all know 2. 5 years in that this is an unusual president , to say the least, and he has already made this kind of statement about syria a year ago, leading to the resignation of then secretary of defence mattis. And he essentially then reversed course and took mattiss position throughout 2019 up until now. So is he going to reverse himself again . I guess weve had some movement of us troops today, but those were in small numbers, and maybe they could come back, or at least not continue the process. I really dont know how to read this guy, and im sitting here about eight miles from the white house. No, its just one of the perplexing president s. Hes reflecting the frustration that a lot of people in the United States and the United Kingdom and europe in general feel about this fight in syria, and about the broader wars in the middle east. Every so often, he just seems to react or vent or let loose, and until you see what happens over the next days and weeks, you cant really know if this wasjust him venting or if it was a sustainable change in policy. So im sorry that im talking around your question, but i really dont know how to evaluate the likelihood of a us withdrawal from syria today. He is right to identify that frustration among the voters, isnt he . He and they and many voters want out of foreign wars. Do you think he is rolling back the cost of this move, certainly to the kurds, and to all kinds of alliances, and in the region generally. It is huge, isnt it . No doubt, youre exactly right. And the risks here for President Trump of changing policy are far greater than the benefits of staying the course. Because with just 1,000 us troops, and some international help, obviously, from good allies in europe, we managed to sort of stabilise north east syria. And thats about the only thing thats gone 0k in this whole 8. 5 year saga, in that conflict. And youre right to say, and i think i was right to say, that a lot of voters in the United States are frustrated by these wars. But no one really talks about them because theyre small, theyre far away, they dont involve that many casualties. And so, if you focus in on it too intently, you can decide its a big political albatross. But if you take a step back, voters are going to care next year about the economy, about relations with china and russia. This is not going to be what determines the outcome of any election, so ijust dont see why it has to become an issue. But obviously today, at least, President Trump disagrees. Lets get some of the days other news a stolen truck has ploughed into several cars in the centre of the german city of limburg. At least seventeen people have been injured and one is in a critical condition. The driver of the vehicle, who was also injured, has been arrested. Police said it was too soon to speculate about a motive and that the investigation is ongoing. Hong kongs government is considering restricting access to the internet to try to contain the protests. The honk leader has ruled out asking beijing for help. Hong kong. The swedish king has removed five of his grandchildren from the royal house. They will no longer have the title of Royal Highness and will not perform official royal duties but will remain members of the family and retain their titles. It reflects a wider view that there is no need to pay so many members of the family for official duties. Thousands of Climate Change activists have been on the streets in cities around the world, starting two weeks of global protest. The campaign, coordinated by Extinction Rebellion, is pushing for much more urgent Government Action to stop rising carbon emissions. In london there were more than 250 arrests as protesters blocked bridges and roads in the centre of the capital. 0ur chief environment correspondent Justin Rowlatt has the latest. There wasnt much the police could do as vehicles blocked key junctions and protesters swiftly chained themselves underneath. Careful, mate. Were trying to shut Central London to draw attention to the climate and ecological emergency. Go, go, go, go, go, go go but officers drew the line when activists tried to set up a kitchen yep, sink and all in the middle of trafalgar square. This was a numbers game. There were hundreds of police. There are no official numbers yet, but thousands of protesters. Campsites and kitchens quickly sprang up in the heart of government. There was even an impromptu wedding on westminster bridge. Cheering and applause it brought parts of Central London to a standstill. Everyones going to lose money. I might as well go home now. My days finished. I aint going to earn nothing, am i . It certainly was disruptive. It took hours for police to unglue protesters from this scaffolding tower. And how would you cut this guy free from his hearse . Not everyone agreed with the tactics. I think youre hysterical extremists, and you are alienating public opinion, and they aint going to turn off their lights until you ask them to individually. Celebrity supporters defended the action. This is a movement for everybody. This is not about party politics, its not about brexit. Its much, much bigger than all of that. And it wasntjust london. Extinction rebellion protests included a mass lie in in mumbai, roadblocks in berlin, actions in new zealand, and in dublin, too. The crowds are thinning out now, though some activists do plan to sleep over, despite the rain. But its unlikely to be comfortable, especially when you are chained to a friend. What are your plans for tonight . To stay here, keep the strand blocked. Yeah, keep the blockage up. And arent you worried the police are going to come and arrest you in the middle of night . No, a cell might be a bit drier than this. Were getting stronger by the hour. And remember that guy in the hearse . He is still there, though now his passenger is wearing the bike lock. One of the co founders of Extinction Rebellion says these dramatic gestures are needed. People have got to get their heads around how serious this crisis is. Its not going away. And Carbon Dioxide emissions went up 2. 7 last year. Literally nothing is being done. But there are 13 more days of these direct actions plans. Though whether the activists, not to mention the public and police, will have the stomach for that, well, thats another question. Asjustin was mentioning in his report there were protests throughout the globe. 0ur correspondent nada tawfik is in new york its been a scene of really orderly chaos, i would say. The Extinction Rebellion protesters hitting a lot of the iconic spots of new york city. First, at the charging bull, down by wall street, they sprayed it with fake blood and staged a die in. Around 30 people were arrested between there and the stock exchange, where they continued the protests, before they went up to Lower Manhattan and blocked traffic on broadway avenue. Again, 50 people there arrested. But police have really been trying to contain the protesters, mark out the route and surround them, so it wont get too out of control. And now here, they are beginning what is supposed to be a week of activities, trying to get people signed up and aware of their cause. For months now, weve been reporting on the political protests taking place in hong kong. But the fallout from those demonstrations has been felt far and wide. Its now reached the basketball courts of america, and ignited a debate about free speech and commercial relations with china. The bbcs tim allman explains. For an American Sports fan, this must seem a long way away violent street protests, Anti Government demonstrations. But some people are taking great interest in the future of hong kong. One of them is daryl morey, general manager of the houston rockets, who posted a tweet, subsequently deleted, that contained an image stating, fight forfreedom, stand with hong kong. The nba has a huge following in hong kong, the nba has a huge following in china, and there was an immediate response. State broadcaster cctv and tencent holdings, which streams basketball in the country, both said they would stop streaming matches. They would stop showing rockets matches. At home, sponsors also withdrew support. The nba issued a statement calling his comments regrettable. Daryl morey issued a new statement of his own. But now, leading politicians in washington have voiced concern, worried china is using its economic power to silence its critics. To try to gag a general manager or anybody who is speaking out in favour of the hong kong protesters is wrong, and i hope that basketball will understand that. Its un american to gag people when theyre speaking out on behalf of freedom. The rockets are injapan for a pre season friendly, but this row over free speech and chinese commercial might is threatening to overshadow any action on the court. Tim allman, bbc news. Stay with us on bbc news. Still to come new zealand marks 250 years since british explorer, captain cook, landed, and the First Encounter between maori and europeans. This was a celebration by people who were relishing their freedom. They believe everythings going to be different from now on. They think their country will be respected in the world once more as it used to be before Slobodan Milosevic took power. The dalai lama, the exiled spiritual leader of tibet, has won this years nobel peace prize. As the parade was reaching its climax, two grenades exploded and a group of soldiers jumped from a military truck taking part in the parade, and ran towards the president , firing kalashnikov automatic rifles. After 437 years, the skeleton ribs of henry viiis tragic warship emerged. But even as divers worked to buoy her up, the mary rose went through another heart stopping drama. I want to be the peoples governor. I want to represent everybody. I believe in the people of california. Welcome back. Good to have you with us. This is bbc world news. The latest headlines President Trump is accused of abandoning americas kurdish allies as he withdraws us troops from Northern Syria. Hundreds of arrests as activists worldwide begin a 2 Week Campaign of disruption demanding action on Climate Change. The british Prime Minister has urged the Trump Administration to reconsider the diplomatic immunity of an american diplomats wife whos left the uk even though she is a suspect in a fatal road crash. Harry dunn died when his motorcycle was in a collision with a car near an raf base. Anne sacoolas left the uk despite telling police she had no plans to do so. Duncan kennedy has the details. Harry dunn was just 19 when he was knocked off his motorbike last august. He died of multiple injuries. It happened not far from this american air base in northamptonshire when he collided with a car driven by the wife of a diplomat who worked at the base. That driver was Anne Sacoolas, pictured here on her wedding day in 2003. But within two weeks of crash, she and her family returned to the United States. This is the neighbourhood near washington, dc where they own a home. It was her decision to leave britain despite being a suspect in a fatal car crash that today led to the Prime Minister to intervene. I do not think that it can be right to use the process of diplomatic immunity for this type of purpose and i hope that Anne Sacoolas will come back and will engage properly with the processes of law as theyre carried out in this country. The intervention of the Prime Minister comes six weeks after harry died here on this roadside in northamptonshire. The air force base where Anne Sacoolas drove out of is just 200 yards down the road. Harrys family say they welcome the move by borisjohnson and say they hope itll bring real pressure on the american government. Harrys parents said today that whilst they are not seeking a long jail sentence for Anne Sacoolas, they are finding it hard to forgive her. It was an accident, we know this, she didnt mean to kill our son, it was an accident, i can forgive herfor that. But forgive her for leaving . Wed have tried to get her a suspended sentence, so she couldve carried on being a mum, so that she wasnt taken away from her own children. But forgiving her for leaving im nowhere near. Northamptonshire police today said the absence of Anne Sacoolas is frustrating their investigation. Its difficult when the suspects have left the uk and obviously causes delays in the investigation, but were making really hard to make sure we gather all of the Available Evidence that remains for us. The foreign secretary has today spoken with the american secretary of state. What started as a tragedy on a quiet english country road has become an international cause of division and heartache. Duncan kennedy, bbc news. The university of lagos has confirmed it has indefinitely suspended one of its lecturers in the light of a bbc investigation into allegations of Sexual Harassment of students. Boniface igbeneghu was one of several academic staff at two universities in west africa caught on camera offering admission or higher grades to women in exchange for sex. Officials at the university of lagos said they have a zero tolerance policy on Sexual Harassment. Mr igbeneghu has also been suspended from the church where he preached. Now, take a look at this this image was captured by the subaru telescope