Earlier, the us military released a video, which it says shows Iranian Special forces removing an unexploded mine from one of the ships. Tehran has flatly denied being behind the attacks on thursday. They believe that other powers are trying to provoke trouble. Heres our chief international correspondent, lyse doucet. America builds its case. The us military says their video shows irans Islamic Revolutionary guards removing a limpet mine from this stricken tanker. Their photos of the ships hull point to what they say is probably that mine which didnt explode and the damage from one which did. One of two attacks on oil tankers in the gulf on thursday, which rang the alarm about disruption of oil supplies and the danger of war in this volatile region. Others, including the un, are calling for an investigation. But this morning, President Trump took to his favourite tv show to say irans to blame. Well, iran did do it, and you know they did it, because you saw the boat. I guess one of the mines didnt explode, and its probably got, essentially, iran written all over it. Tonight, britains foreign secretary backed him up. Jeremy hunt now says responsibility almost certainly lies with iran. Iran denies that. At this regional meeting, its president took aim at the United States. Translation the Us Government has acted against all International Laws in the last two years by adopting an aggressive policy, and it poses a serious threat to regional and international stability. Whoever caused these explosions knows they are playing with fire. Just look at this map of the gulf region and the narrow waterways where the worlds oil tankers come and go. This is where these tensions could escalate by an accidental collision or a retaliatory strike by iran or the us and its closest partners, including saudi arabia. For now, the saudis are threatening stern action against what they see as irans puppet the houthis in yemen already locked in a devastating war with the Saudi Led Coalition just south of here. So is there a way out . Definitly, and thats through diplomacy, that the Trump Administration pulled out of the Nuclear Agreement last year, and reimposed sanctions on iran, despite the fact that it didnt violate the Nuclear Agreement. Now we have people in the administration that are hoping to put so much of the economic pain on society that it will lead to a regime change, and so at the same time, they are saying that they want the Trump Administration that they want to talk to iran. They call me, and so thats almost laughable. If irans to blame, it may be its message, it can also inflict pain on oil supplies, on stability. A warning, if one was needed, of the cost of confrontation. Lyse doucet, bbc news. And you can keep up to date all with the latest on this story on our website. There you will find reaction and analysis from around the world, including maps and films and other reports and articles from correspondents based in the region. Thats all at bbc. Com news or download the bbc news app. Lets get some of the days other news. A britishjudge has ruled that Julian Assange will face a 5 day us extradition hearing in february next year. The wikileaks founder is wanted in the United States on charges of publishing government secrets. Mr assange spent seven years inside the Ecuadorian Embassy in london before being handed over to british authorities by ecuador in april. Protests are taking place across brazil as part of a general strike against pension reform plans. Striking workers have created roadblocks in several major cities, while some public transport has been shut down. Its the first major strike since the far right president Jair Bolsanaro took office injanuary. Thousands of venezuelans have rushed to cross into peru, hours before the introduction of tougher migration laws. Numbers of migrants fleeing venezuelas crisis have now reached unprecedented levels, as andy beatt reports. They will now need a visa and a valid passport to enter the country. These venezuelans with just hours before new immigration controls curb access to what has been one of the worlds most welcoming countries. Translation i arrived most welcoming countries. Translation iarrived here most welcoming countries. Translation i arrived here at dawn, around 4 30 am, a lot more are on their way, around 4 5000. Around 4 30 am, a lot more are on their way, around 4 5000. More than 4 Million People have fled venezuela since 2015. The economic and humanitarian crisis feeling the biggest migration in the regions recent history. At this border town, nearly 6000 entering peru in a single day. Just two years ago, peru plasma government introduced a range of measures to help accommodate migrants. Now, claims they are driving down wages and fuelling crime are prompting a clampdown. Translation weve opened our arms to more than 800,000 venezuelans, i think its completely logical and justified to ask them to bring visas to ensure better control of who enters. For many poor venezuelans, obtaining a visa is virtually impossible. Some whove spent weeks crossing colombia and ecuador, forced to abandon hope and head back home. It is already been far too many days without sleeping or eating, its exhausting. Just imagine how much longer it would take. Next week, the un high commissionerfor take. Next week, the un high commissioner for human rights take. Next week, the un high commissionerfor Human Rights Lodge isa commissionerfor Human Rights Lodge is a diplomatic drive in venezuela, holding separate meetings with Nicolas Maduro and juan guaido. But the thousand stuck in limbo or on the thousand stuck in limbo or on the long return journey, the thousand stuck in limbo or on the long returnjourney, there the thousand stuck in limbo or on the long return journey, there seems little hope of a breakthrough. Andy beatt, abc news. Bbc news. Emergency teams in chile have been trying to locate three miners who became trapped 70 metres below ground, after a landslide on thursday. The miners, who are from bolivia, have been heard making banging sounds. Gareth barlow has more details and his report contains some flashing images. Rescue teams gather near the entrance of the collapse mine. 70 metres below them, three living workers trapped by a landslide. Translation the rescue teams have had contact with the people, they were banging on the boxes and the trapped miners were responding. They are not at the lowest point. With a massive rock blocking the entrance to the shaft, the authorities have resorted to using explosives to try to break it up. Translation we have implemented our plan a which sends a signal to the citizens that they should retreat so we can start with a series of minor detonations against the rock in hopes of breaking it apart. Its this massive rock which is obstructing the internal channels that would lead us to our workers. Among the three, a father and a son, the third man is 62 years old. Writing on twitter, the bolivian president spoke of his dismay and offered thanks to the rescuers. In chile tonight, trapped deep underground for the three miners, the Worst Nightmare is a very real reality. Gareth barlow, bbc news. Stay with us on bbc news. Still to come earths distant past on display, we head to the new fossil exhibit past on display, we head to the new fossil exhibit in washington thats delighting visitors. Well, borisjohnson, the frontrunner in the race to be conservative party leader and Prime Minister says he will take part in the bbc tv debate with the other contenders next week. In his first broadcast interview since the contest began he said it was perfectly realistic to renegotiate the Withdrawal Agreement with the eu before the end of october but the uk should step up preparations for a no deal brexit, to help get an improved deal. Meanwhile, the leadership race lost one candidate today, the heath secretary matt hancock dropped out. A warning, this report by our deputy political editorjohn pienaar contains flashing images. Leader of the pack, the strong, silent type. Reporter are you afraid of scrutiny or a gaffe, mrjohnson . Well, was he up forfacing live interviews, joining the other candidates in a bbc tv debate . Turned out today he was. Ive always been keen on tv debates. Im slightly bewildered by the conversation thats been going on. And the best time to do that i think would be after the second ballot on tuesday. He decided risking a slip up or setback next tuesday, although not in channel 4s debate on sunday, was worth it. His pledge, no surrender. Hed deliver a managed brexit, deal or no deal, by october the 31st. The only way to make sure that we convince our partners that were determined to get that outcome is to prepare for no deal, and i think it would be absolutely bizarre to signal at this stage that the uk government was willing once again to run up the white flag and delay yet again. As for the big barrier to a deal, how to avoid stops and checks on the eus irish border after brexit. The obvious way to do it is to make sure that you have checks on anybody who breaks the law, as you would expect, but you do it away from the border. What about using cocaine . A damaging admission by rival michael gove . Mrjohnson treated it as almost something trivial. A single inconclusive event that took place when i was a teenager. Moments earlier, the first to drop out, Health SecretaryMatt Hancocks 20 mps votes in the last round and his own now up for grabs. Where i put myself forward as a candidate focused on the future, the party is understandably focused very much on the here and now and how we get through brexit in the next few months, and so i have decided to withdraw from the contest. In other words, the big issue in the coming debate and rounds of voting next week is how willing the next Prime Minister will be to leave the eu without a deal. That and whos best placed to take on the front runner. Jeremy hunt saying his negotiating experiences in business and as foreign secretary mean he can get a deal where theresa may failed, so trust him, not borisjohnson. His hard stop on the 31st of october is effectively saying that the best we can offer the country is either a no deal brexit or a general election if parliament succeeds in stopping that no deal brexit. So, six runners left. Michael gove, in third place and trying to accelerate. Im looking forward to a contest of ideas and to exchanging thoughts with other candidates about how we can make this country better in the future. Rory stewart warning against no deal and against boris johnson. He keeps saying he will deliver brexit by the 31st of october, but how . We need to get into the details of how its going to happen. Brexiteer dominic raab. You know theyre campaigning when the hard hats come out. I think this is the start of the race. We all know about the curse of the frontrunner in conservative leadership contests. Theres many a slip between a cup and a lip. And the home secretary, like all of them, needing to gain ground. The question now is who is going to go up against boris, and i think that what i offer is a good choice, a fresh choice, for the party and for the country. So, this isntjust a race to downing street, its a chase. The prospect of calling number 10 home has tantalised borisjohnson for years. Now it mayjust be within touching distance. Do stay with us on bbc news. Lets get some headlines. President trump says hes convinced that iran carried out thursdays attacks on two oil tankers in the gulf of oman. Lets stay with our top story now. We can go live to texas and speak to sam lagrone the editor of the Us Naval Institute news. Thank you for your time. The us blames iran. Iran categorically denies it is to blame. How do you determine who is behind this . Thank you very much for having me. There isa you very much for having me. There is a really long chain of forensic investigation that will go on now, to understand all of the visual intelligence of stuff that we have seen so intelligence of stuff that we have seen so far is probably only a small sliver of what the us fleet has collected through aerial surveillance and from the uss bainbridge, which is on the scene. It might be too early to tell from the limited information that we have, it is only a sliver of what could possibly be out there. You have seen that video that was released, the us saying it shows the uranian revolutionary guard. Iranian. What do you think when you see that video . I see a lot of people on a boat which looks similar to boats which have been used by various uranian military organisations, including the sectarian irgcn. They are removing something from the ship. Beyond that it is inconclusive. I think the Us Central Command and the white house are making conclusions based on that video, but i think myself and a lot of people in the open Source Intelligence community that are looking at this online have a lot more questions as to what exactly is going on in that video. Why would you remove a mine from a ship which you remove a mine from a ship which you placed . It is quite dangerous as well, isnt it . It absolutely is. I dont think you would see an american explosive Ordnance Disposal tea m american explosive Ordnance Disposal team operates like that, we have, you know, 15 20 people on a small boat next to something that could be potentially explosive. There is also this discrepancy, because people on the japanese ships say they didnt see mines, they sell flying objects. So, there is not really enough evidence to be conclusive one way or the other. Myself and a lot of other reporters have been covering the story since it broke and we have asked central amount the question, how do you explain this discrepancy . And we have not got a whole lot of a nswe rs and we have not got a whole lot of a nswers yet. And we have not got a whole lot of answers yet. Central command. I would say it would be responsible to speculate based on the information we have now and whether disconnect without significantly more information as to what exactly the crew saw when they were there. Is there any video evidence, is itjust first person accounts to the president of the company . It is still too early to tell, definitively, based on the evidence that we have seen publicly, what exactly happens to that particular ship. Meanwhile, this shipping route is really crucial for ship. Meanwhile, this shipping route is really crucialfor oil ship. Meanwhile, this shipping route is really crucial for oil supplies. What happens now . How are tankers going to stay safe . How are you going to stay safe . How are you going to stay safe . How are you going to continue to get the oil supply moving . There is an option that the us navy has used as recently as 2015, to escort ships. In that case the irgcn had seized a us must ship calls the maersk tigress and held it for little over a week. Merchant ship. It was really expensive, really capable, at one point, almost 8 billion warships escorting tankers in and out of the strait of honours to prevent out of the strait of honours to p reve nt a ny out of the strait of honours to prevent any kind of interdiction from the irgcn. That is an expensive use of a ship for what is essentially crossing guard duty. There are a lot of techniques merchant ships can use. You can move in clusters and you can, there are a lot of Lessons Learned from the somali pirate experiences on how to deal with small, fast boats. You can have more watches. There are other ways you can try to be more vigilant, you know, if there is a threat out there. It is difficult to do when you dont even understand exactly what you are looking for. And those other conclusions we have right now. Thank you. Sam, thank you for that. Survivors of the granville tower fire have been at events to mark the two Year Anniversary of the disaster. Grenfell tower. Relatives and friends of those who died also attended. 72 people were killed when a fire in the tower block in west london spread rapidly, engulfing the building. It has emerged more than 300 high rise buildings in england still have cladding similar to that used on granville tower. Grenfell tower. Lucy manning reports. In the shadow of grenfell, a community that fire ripped apart came together. Tonight, grenfell marched silently. Appropriately, given they feel no one has been listening. The day had started as it finished, with remembrance. Ijust lift my head up to the sky and say help me to be strong ijust cant give up now. Zainab choucair. Mierna choucair. 72 names. Many whole families. Bassem choucair. Ive come so far from where i started from. The pain hasnt subsided, its just lasted for longer and the sense of injustice has grown. We dont want to wait for justice, i dont know, certain years, so its still not possible we get the justice. Two years on, no one held responsible, no one charged, no outcome to the delayed public inquiry. Marcio gomes and his pregnant wife escaped that night but his son, the youngest of the 72 victims, killed two months before he was due to be born. Crying, anger, love, forgiveness, everything. And two years on has enough changed . No, no, not nearly enough. A lot more needs to be done. People need to feel safe at home. The grenfell families were promised everyone would be rehoused within three weeks. Two years on, and 17 households still havent found permanent homes. The country was promised every high rise building would be made safe. Two years on, 328 buildings are still with unsafe cladding, with tens of thousands of people still living in them. The families feel that not enough has been done two years on, many people are still living in unsafe buildings. Whats your response . Well, today is very much a day for reflection and all of those whove lost their lives, and i very much recognise the calls for more action and thats what i think does need to happen. So im proud to be supporting this cookbook. Survivor Munira Mahmud has raised money with a grenfell cookbook, but