this is bbc world news. i'm reged ahmad. our top stories: nato condemns iran's seizure of a british—flagged ship in the gulf. british airways suddenly suspends all flights to and from cairo for a week over security concerns. mystery at the vatican — forensic experts search for a 15—year—old girl who disappeared in 1983. celebrations mark the moment 50 years ago that neil armstrong became the first human to walk on the moon.

hello and welcome. nato has condemned iran for seizing a british—flagged ship on friday, describing it as a clear challenge to international freedom of navigation. in a statement, the organisation says it supports british efforts to resolve the issue through dialogue. in another development, the uk has written to the un security council stating its tanker was in omani territorial waters, exercising the lawful right of transit and that iran's actions constitute "illegal interference". iran has released footage of the moment its troops seized the vessel. our diplomatic correspondent paul adams has more. this is the moment iranian revolutionary guards took over the stena impero, descending from a helicopter onto the deck of the tanker, as fast boats circled nearby. iran says the ship had broken international regulations following an accident involving a fishing boat. the ships owners have not confirmed this and say it was obeying the law. it's now being held at the iranian port of bandar abbas.

we are calling on iran to reverse this illegal act. we're looking for ways to de—escalate the situation, but we're also very clear that we will do what it takes to ensure the safety and security of british and international shipping. the tanker was making its way through the busy strait of hormuz, in omani waters, when it was intercepted. it made a sharp turn north towards iran, a clear sign that something was wrong. a british warship, hms montrose, was alerted and raced to intervene, as it did successfully with another british—flagged tankerjust over a week ago. but this time, it was too far away. the tanker was already in iranian waters. to allow a ship to go out when we knew the iranians wanted to actually take a hostage is extraordinary, and it's hardly surprising. they said they would do it. several times they said they would do it and,

lo and behold, they've done it, and now we've got in this very, very difficult situation. tensions started to rise last year, when donald trump pulled the us out of a 2015 nuclear deal with iran and imposed crippling sanctions. iran grew increasingly frustrated. in may and june, it was blamed for a series of attacks on international tankers. then, in a dramatic escalation, iran shot down an american surveillance drone. donald trump briefly contemplated a military response. and earlier this month, off gibraltar, the royal marines intercepted a tanker full of iranian oil that britain said was bound for syria. iran threatened to retaliate. today, iran's foreign minister accused britain of piracy. "it is iran", he tweeted, "that guarantees the security of the gulf and the strait of hormuz. the uk must cease being an accessory to the economic terrorism of the united states." what we have at the moment are two captured tankers and an angry war of words.

mr hunt says he feels betrayed by his iranian opposite number. he says that javad zarif told him a week ago that iran wanted to de—escalate the situation, but that iran had done the opposite. the stena impero and its multinational crew, which does not include any britons, are now prisoners of iran's revolutionary guard, hostages in a deepening geopolitical row. paul adams, bbc news. mike singh is the managing director of the washington institute and former director of middle east affairs at the national security council. he explained what diplomatic measures the uk could take. these are very difficult circumstances. you have so many issues that are mixed together. i think the first concern that the uk will have will be for the ship and its crew. and i am sure they're already engaging a quite intensive diplomacy to try to win their release and i'm sure that iran is probably connecting that to their own tanker

which was seized by the british in the strait of gibraltar a couple of weeks ago. then you have the issue of trying to deter the iranians from doing this sort of thing again. that can't really be done diplomatically. there the uk will have do look to say, increasing its naval patrols of the persian gulf, or doing something to give the iranians an impression that there is a cost to this kind of action. when you say something, what do you mean? as i said, you could beef up patrols. it could also be that the royal navy could be a bit more aggressive in confronting iranian vessels that approach british shipping. you can'tjust turn off shipping. so firing? you think it might come to firing on an iranian vessel? that obviously would be the last result for any professional navy, be it the british or american. you can escort the tankers more closely. you can fire warning shots. there are a number of steps up the escalatory ladder you can take before it comes to sinking a ship.

on the diplomatic side, one british newspaper is reporting that the uk is considering new sanctions, it is considering asset freezes. is something like that going to work? well, i think the complication is that it gets mixed together with the broader tensions between, especially, the united states and iran. in the british have, in fact, been looking to de—escalate that. they've urged washington to perhaps step back from some of the pressure they have placed on iran. and so the real question for london now is can you punish iran for this latest action without abolishing the policy that you have been taking for the overall situation? on that point, isn't this just for the uk closer to the us, forcing the uk to work with the us on a policy it doesn't even agree with? well, i think that people in washington are hoping so. that is, in fact, will be from the united states' perspective a wake—up call for allies about the nature of the iranian regime and what's at stake. but i think iran is

hoping for the opposite. that what this will lead to is stronger calls from europe to london to the united states to change its policy because of the tensions that have resulted in the persian gulf. mike sing there. british airways says it's cancelling flights to cairo for the next seven days, amid security concerns. the german carrier, lufthansa, is also suspending its flights to the egyptian capital until sunday. the bbc‘s matt cole reports. for some cairo—bound passengers, the first sign of trouble was when their boarding passes failed at check—in. others have told of confusion from ba ground staff as news filtered through that all the airline's flights to and from egypt's capital were being suspended. at one stage, the met police were called to deal with agitated would—be travellers. it is very disappointing and frustrating, especially to my kids and family. we have a big family over there waiting to see the children. there was no information,

there was no help, there was no advice on any alternative ways of getting there. it was just a case of, "ring this number", which of course you couldn't get through to. ba says it made the decision to suspend flights, but has given few details as to why, save for a short statement which said: "we constantly review our security arrangements at all our airports "around the world and have suspended flights to cairo for seven days as a precaution to allow for further assessment." the uk government says it is aware of ba's flight suspension. but other than acknowledging that, the foreign office has made no alteration to its long—standing advice for travel to egypt. we understand that ba has helped at least some passengers to complete theirjourney, flying via other countries on other airlines into cairo. which seems to suggest that ba is happy for passengers to land at the egyptian capital's airport, just not on its aircraft.

but ba does stress the safety of its passengers and crew is its priority. matt cole, bbc news, at london's heathrow airport. our news reporter ramzan karmali sat down with me and said the company's unilateral action has left more questions than answers. we have had passengers arriving at the airport getting their boarding passes, getting to the gates and being turned away. it's extremely unusual and also this was a decision made by the airline, by british airlines, not any government official. and what's also is unusual is how temporary this suspension is. till the 27th ofjuly, so a very unusual move indeed. this is no — this has not come from the british government or the foreign office, although on their website they say in certain places of egypt, you should avoid some places. they also say there is a terrorism threat to aviation as well on that website, too. but, again, i must stress this was a decision made by british airways, and so this is very, very unusual and makes me ask more

questions because the detail we got from british airways was very limited indeed. there are certainly a lot of questions around that. but what about other airlines, what are they doing? lufthansa, they have suspended forjust one — just one night, really. they're going to have flights again tomorrow. and thomas cook, in total about 415,000 british nationals travel to egypt, they travelled last year, and thomas cook was the main operator. they are going to carry on. they fly daily from manchester but they also fly from birmingham, newcastle and london gatwick. now the other one is easyjet, they take a lot of passengers from london gatwick and they put out a statement saying they're watching the situation, but they are going to carry on playing as well. so what do people do if they've got tickets or they've been affected?

if you are a british airways customer, you will be able to get a full refund. you will be able to delay your flight and you could rebook on other flights and maybe complete it only with another airline. more likely to be someone like egyptair to get you to your destination like cairo or back to london because they are flying between heathrow and cairo. thank you very much. let's get some of the day's other news. more than 20,000 people have taken to the streets of the russian capital moscow to protest against the exclusion of opposition candidates from registering for local elections. officials barred around 30 candidates from running, claiming they failed to qualify. those excluded say they're being punished for challenging the control of putin loyalists. in london, pro—european opponents of brexit have held a ‘no to boris, yes to europe‘ march. it featured this inflatable cartoon of boris johnson, the man expected to become the next british prime minister. he — or his only rival, jeremy hunt — will take over in number 10 downing street next week. both have promised to

see brexit through — but only mrjohnson had his own balloon caricature. forensic experts have extracted bones from a burial chamber at the vatican in an attempt to solve the mystery disappearance of a 15—year—old girl in 1983. earlier this month, emanuela orlandi's family received an anonymous tip—off that she might be buried in the tomb. rhodri davies has more. 36 years missing, and still they are searching. these experts are looking through two chambers at the vatican in the case of emanuela orlandi. it follows the opening of two tombs in a vatican cemetery after orlandi's family lawyer received an anonymous tip—off pointing to the marble—topped graves. but the tombs turned out to be empty, and the chambers revealed only centuries—old bones

of two german princesses. orlandi's family had urged the vatican to open an internal investigation into the disappearance, which it did this year. she was the 15—year—old daughter of a vatican employee. she vanished in rome in 1983 after her flute lesson. it is a disappearance that has kept italians captivated. it's probably italy's most enduring mystery. everybody has a theory about it, a favourite theory. it was the mafia. it was a paedophile ring inside the vatican, some say. it could have been the stasi, or islamic terrorists who wanted the release of popejohn paul ii's would—be assassin. and so there's enormous sympathy for the family and support for this vatican investigation that we're now seeing. yet the family has regularly appealed to the vatican to provide more information, and some say the holy see knows more than it is telling. orlandi's father died still wanting answers. her brother has now made resolving the case his life's work.

but, with the latest attempts lacking a breakthrough, he'll continue to search for her. rhodri davies, bbc news. stay with us on bbc world news, still to come: standing not falling — how a skate park gives syrian children strength and courage. mission control: you can see them coming down the ladder now. it's one small step for man, one giant leap for mankind. a catastrophic engine fire is being blamed tonight for the first crash in the 30 year history of concorde, the world's only supersonic airliner. it was one of the most vivid symbols of the violence and hatred that tore apart the state of yugoslavia. but now, a decade later, it's been painstakingly rebuilt and opens again today.

there's been a 50% decrease in sperm quantity and an increase in malfunction of sperm unable to swim properly. thousands of households across the country are suspiciously quiet this lunchtime as children bury their noses in the final instalment of harry potter. this is bbc news. the latest headlines: nato condemns iran's seizure of a british—flagged ship in the gulf. british airways suspends all flights to and from cairo for a week over security concerns. tens of thousands of people have joined a protest in support of hong kong's police force, calling for an end to recent violence. it comes after a wave of demonstrations against

a planned extradition bill. another big protest is planned for sunday. our correspondent stephen mcdonell has the latest. today in hong kong it has been the turn of the pro—beijing camp to have a rally. they have turned out today, they say, to support the hong kong government and the city's riot police, who have been criticised for their at times heavy—handed suppression of the mass rallies in support of democracy and opposing a controversial bill to allow extradition to mainland chinese courts. and, while this gathering is not as big as those in the sort of pro—democracy camp, if you like, nevertheless there are thousands of people here. however, as you can see, many are already leaving after just 30 minutes. one of the reasons for this could be that the weather is driving them back. it is raining, and we've heard, at times, thunder.

it will be interpreted, i'm sure, by the pro—democracy camp as a sign of the lack of conviction of those who are here. they would also say there are many in attendance who are actually from the chinese mainland, but living in hong kong, and that they are traditionally bigger supporters of the central government. a skate park built by a german charity is helping to change children's lives in a damascus suburb. eight years of civil war in syria have had a traumatic effect on children, and the park aims to develop their sense of self—determination and promote development. the skate park is also a public green space encouraging community engagement, as gail maclellan reports mohammed doesn't care how many times he falls off his skate board. he's happy to learn, and probably lucky to be alive.

translation: i hurt my arms, legs and shoulder, until i learned how to do it. he says it took a while to get to grips with the board. at first, we used to sit on it. we didn't know how to stand. and then the volunteers came and told us these are skateboards. we didn't understand in the beginning, but they taught us, and now we know how to do it. mohammed was displaced from eastern ghouta — an area that saw fierce fighting in the syrian conflict. the skate park was built a month ago by the german ngo skate aid, which, with the help of sos children's villages syria, has transformed a public square in the area of quadsaya into a playground for the children. their aim, they say, is to help children traumatised by years of conflict and violence. one really important thing is, that fits very good in these countries with conflict, skateboarding shows the most important thing in their life is to have to stand up one more than you fall down.

mohammed might now be safe from a past of bombs and fear, but still, learning how to keep standing is a precious gift. gail maclellan, bbc news. celebrations have kicked off across north america, to mark 50 years since the moon landing. at the houston space center, home to apollo 11's mission control, fireworks marked the moment neil armstrong became the first person to step foot on the moon. there were also celebrations in washington. our correspondent nada tawfik was at the national air and space museum. just like 50 years ago, the apollo 11 mission united americans. hundreds gathered here to mark that moment when neil armstrong made history, becoming the first man on the moon. they celebrated it with a

giant as an rude made of balloons that they lowered down from the ceiling and it was just impressive to see how many people had that same wonder and or on their faces, wanting to relive that moment and share it with other americans here. snapping the video on their phone. this has been the culmination of a week of events leading up to this moment where we have seen reunions from those who were flight directors and mission control who help, along with the two surviving astronauts who spoke about 50 years later how the mission shape culture in america and their lives. again, just so much i°y and their lives. again, just so much joy overall. a real reminder of the apollo era, a time when everything seemed so possible and it was unthinkable to have man on the moon but that changed and changed american‘s perception of what mankind was capable of. it was an

extraordinary moment but a difficult mission as well. at one point nasser thought it would not happen. that is correct. when they got the directive from presidentjohn f. kennedy that by the end of the decade man would be on the moon it was a scramble. they did not have the technology. they did not have the technology. they had to hire people. at mission control, most flight directors were under 30. they had a can—do attitude and even until the final moments when neil armstrong descended, but eagle landing module onto the lunar service —— surface, there were computer alarms going off and he did not know if it was safe to land, he was running low on fuel, these issues were there in dramatic fashion but it all worked out, as we know and we are honouring the famous words for ever in the american and the world ‘s lexicon, eagle has landed. and finally climbing down that ladder, placing his left foot on the lunar surface saying one

small step for man, one giant leap for mankind. humans landing on the moon was an historic feat of technology, but a similarly incredible if under—appreciated backstory to events that day was the live transmission of the images back to earth. the small australian town of parkes, new south wales, is home to an observatory known as ‘the dish‘, which played a crucial part in proceedings that day. drjane kaczmarek, an astrophysicist who works there, explained why. there were actually two australian dishes that played a pivotal role in broadcasting that a signal to the world. one was honeysuckle creek in canberra which is no longer in operation. it captured the first step and there momentous words that were broadcast and embedded in everyone's memory. but parkes behind me was a bit bigger and a bit more sensitive so eight minutes into the transmission, nasa decided to switch to our telescope with a clearer signal and they stuck with it for the 2.5 hours remaining of the moonwalk.

was an extraordinary moment as well because there were very high winds, went there? can you tell us about that? it was an incredible day here. the dish behind me weighs over 1000 tons but it's actually not physically connected to the tower that it sits on. the day of the moon landing, they were gusts of wind over 100 kilometres hour that almost toppled the dish but they decided to go through with it and were able to successfully track the moon and share that story. tell us why it was so dangerous to keep going, for the telescope and the people? if the dish would actually fall over, everything is operated from within the tower so if the dish

falls down, it's going to actually crush the tower, the people inside of it and all the technology and hard work that went into building it. so it was a very touchy moment and a very hard decision to make but i'm sure that nobody actually regrets the decision that was made in the end. of course they don't. there is an incredible mythology that's built up around that moment. there are people there that still remember parkes observatory‘s role in the moon landing? yes there were two people here that were here for that day. they were in charge of driving the telescope and making sure it stayed on target. they are here and they are still as sharp as ever. they are telling stories that would make anyone sit on edge because they are so amazing, how well they remember and are able to share their own experience of that very special day. it is quite incredible. i'm sure they have amazing memories. in terms of today, what role does the telescope continue to play? parkes has always been a research instrument. every single day we are doing science. we are tracking a star at the moment and

it's only rarely that nasa reaches out to us to help us track of space missions. we are still an operational instrument and we do science that is leading the way in astrophysical research. take you so much for taking us through those the was the —— parkes telescope that played a huge role in the television transmission of images from the moon. take a look at these extraordinary pictures from the united states. it shows the moment a man took drastic action to escape a fire in a high—rise building in philadelphia. he can be seen scaling down multiple storeys with a helicopter spotlight guiding his way. the unidentifed man, who's been dubbed a real—life spider—man by local media, reached the ground safely. just to remind you of our top story.

nato has condemned the seizing of the british flagship bay run on friday. much more on that on our website. —— by iran on friday. hello. saturday brought us a day of sunshine and heavy showers. sunday will be the drier day of the weekend for many of us. now, this was the picture on saturday in norfolk. we had some huge shower clouds around, thunderstorms as well. those showers have now eased away towards the east. so what we're left with as we head through the day on sunday are long spells of sunshine and further rain. that's going to be arriving across north—western parts of the uk later on in the day. from the word go, a lot of dry weather with some sunshine, lighter winds than we had on saturday. through the morning, the winds pick up and the cloud increases across northern ireland, ahead of some rain arriving in the middle of the day. that'll spread across the western half of scotland in the afternoon. heavy, wet and windy here in the north—west.

eastern scotland and the bulk of england and wales stay dry and fine all day, with temperatures about 20—25 degrees or so in the sunshine, typically the high teens where you've got cloud and the rain. and that rain is likely to affect the final day of the open at royal portrush. dry, i think, through the course of the morning, but things will turn pretty soggy during the course of the afternoon. through the afternoon into the evening, the attention turns to northern ireland and western scotland in particular, where rainfall totals are really going to be mounting up. could be some localised flooding as we head through into the early hours of monday. western scotland and also north—west of england seeing some of those torrential downpours. it's going to be quite a humid night, actually, first thing monday the temperatures already in the high teens. through the day on monday, the story improves and the rain we've got initially is going to work its way gradually towards the north. so for much of england and wales, i think, a dry day. again lots of sunshine, and with that south—westerly wind, the humidity and heat increasing. there could be a lot of low cloud around some of these irish sea coasts. temperatures up to about 29,

possibly 30 degrees towards the south—east on monday. even across scotland and northern ireland, we've got those temperatures in the mid—20s. but through the middle part of this week, the heat is really going to be rising, and across much of central europe that heat will be setting in, and we could break the all—time temperature record in paris with 41 celsius possible by wednesday. that heat pushing up towards the uk. so into tuesday, then, another warm day everywhere. we could well see those temperatures above 30 degrees for several places across southern and eastern england. hot weather across the uk. it is looking dry for most of us, but increasing humidity, and that means there could well be some heavy and potentially thundery showers through the middle part of the week. so showers around in the north and the north—west, warm and dry towards the south—east. do keep an eye on the latest forecast. bye— bye.

this is bbc news. the headlines: nato has condemned the seizure by iran of a british—flagged ship in the gulf. the organisation has issued a statement saying it supports british efforts to resolve the issue through dialogue. the stena impero tanker and 23 crew are being held at a port in iran. british airways has suspended all flights to cairo for a week over security issues. it said the security situation in the egyptian capital would be further assessed but didn't elaborate. the german carrier, lufthansa, also cancelled its saturday flights to cairo, saying passenger safety is its number one priority. there have been celebrations in washington and houston marking the moment 50 years ago that neil armstrong became the first human being to walk on the moon. crowds of visitors participated in a new year style countdown to the moment the astronaut took what he memorably called a "giant leap for mankind".