mutiny by wagner fighters shows cracks emerging in vladimir putin's authority. survivors of last week's migrant boat disaster in greece have told the bbc that the greek authorities abandoned them to their fate. more than 500 people are missing, feared drowned. meanwhile — greece's conservative leader kyriakos mitsotakis has claimed a landlside victory in the country's national elections. the vote was called after his party narrowly failed to secure an outright majority in may. now on bbc news... titanic sub search. on sunday the 18th ofjune 2023, five men began an extraordinaryjourney... we have clients that are titanic enthusiasts, which we refer to as titaniacs. ..to the bottom of the atlantic ocean to see the titanic shipwreck.

it's got one button... and that's it. but their sub went missing, prompting a massive international effort to find them, with warnings oxygen supplies would be dwindling. the really nightmarish scenario is that they are alive at the surface, bobbing away, running out of air and unable to get out. it's exceptionally difficult. it's basically a needle in a haystack. - well, i'm nervous. i'm sick to my stomach with nerves. i'm just hoping for good news. the dive that was meant to take around eight hours turned into days. the debris is consistent with the catastrophic loss of the pressure chamber. so what do we know happened on the titan and to the men on board?

on saturday the 17th ofjune 2023, british explorer hamish harding posted an update on facebook revealing his journey to explore the wreck of the titanic. harding was travelling with 0ceangate expeditions, a private company that takes paying customers down to see the wreck. the eight—day trip started on friday the 16th ofjune when the research ship the polar prince left

the canadian port of stjohn�*s to head out to sea. the polar prince is a large ship that can be used to transport submersibles to the area above the titanic wreck site. the titanic lies approximately 3,800 metres below sea level, where natural light cannot reach. just complete darkness. 2022 marked 110 years since the sinking of the titanic. the wreck site sits beneath the surface of the atlantic ocean off the coast of newfoundland on canada's east coast. explorers found the wreckage in 1985 and during 11 dives injuly 1986, footage was shot by cameras on a human occupied submersible. it was the first time people had set

eyes on the supposedly unsinkable ship since 1912. titan is a 6.7—metre long submersible capable of carrying five people. indistinct radio chatter. it costs a quarter of a million us dollars to travel to the titanic site on board titan. the chief executive of 0ceangate expeditions spoke to the bbc�*s us partner, cbs news. who are the typical clientele for these missions? we have clients that are titanic enthusiasts, which we refer to as titaniacs. we've have people who have mortgaged their home to come and do the trip, and we have people who don't think twice about a trip of this cost. we had one gentleman who had won the lottery. the submersible left an impression on the cbsjournalist, which he highlighted in his report.

..and yet i couldn't help noticing how many pieces of this sub seemed improvised. i like to tell people this is not your grandfather's submarine. it's got one button... and that's it. stockton rush, the company's ceo, is one of the five men on board the titan, which lost contact with the surface vessel an hour and 45 minutes after it began a dive to see the wreck on sunday the 18th ofjune 2023. mr rush spoke to bbc news on the travel show last year. yeah, so we run the sub with this game controller. it's made by logitech, but it's basically a sony playstation—style controller. if you want to go forward, you press forward. if you want to go back, you press back. you want to turn to the left, it's like that. the right, you turn to the right. in this interview, the company stresses that each person involved with an expedition to see

the wreckage has a dedicated scientific role, keen to play down associations with tourism to the historic gravesite. this is not a tourist operation. we have a number of nautical archaeologists and deep sea marine biologists, as well as our own crew that will go there. five individuals can go on each dive. three of those are what we call mission specialists. so those are the folks who help finance the mission, but they are also active participants. so why we're not a fan of the tourist term is because these are crew members. the youngest person on board the titan is suleman dawood, a 19—year—old student from surbiton in south west london. he's a student at the university of strathclyde in glasgow. his father, british businessman shahzada dawood, is also on board. he is vice chairman of pakistani conglomerate engro corporation. mr dawood is from one

of pakistan's richest families. we've spoken about his son and his daughter as well, and his dog and his cat and his wife and other members of the family. he did tell me that he was going along as well so we knew he was with his dad on this trip, but i can't imagine what the family is going through. on a personal side, i know shahzada to be deeply involved with lots of initiatives that help improve people's lives. both he and his family are tremendous philanthropists, doing good for societies and humanity all over the world. hamish harding made money in banking software in the 1990s and set up his dubai—based privatejet business action aviation in 200a. he's a seasoned explorer who holds three guinness world records, including the longest time spent at full ocean depth during a dive to the deepest part of the mariana trench.

you're a friend of hamish. i appreciate this is a very difficult time for you and his friends and family at the moment. yeah, i mean, all our thoughts have to be with, in particular, his family, his wife and two sons and those who are closer to him. you know, it must be must be dreadful, just not knowing. it's one of these things that maybe, as explorers, we don't take into account enough. we accept the risks, we go into it knowing the risk. we've calculated everything, but our friends and family don't. they don't often understand what's going on. so that's where our thoughts have to be. also on board is paul—henri nargeolet, or ph, a former french navy diver nicknamed mr titanic. he has reportedly spent more time at the wreck than any other explorer and was part of the first expedition to visit it in 1987, just two years after it was found.

so he have lots of experience with submarine. he knows how to react if there is a problem. and so i'm very confident about it that he can... ..manage good the situation. and he's really passionate about titanic since they found it more than 30 years ago. and i know now he's at a place he would like to be, just i really hope that we find them all safe. the titan has life support for approximately 96 hours for those on board. it means the mission to find the sub is in a race against time over an area that's twice the size of the state of connecticut — more than 25,000 square kilometres. the search has taken place above the water using aircraft and on the water using ships.

both us and canadian agencies are involved in the rescue operation. it's here in boston where the search operation is based. this story has attracted a huge amount of attention reflected in the level of media interest. the us coast guard has been holding regular press conferences to keep us updated. and the operation itself has been herculean, drawing on international resources, including from the uk. 0ur crews are working around the clock to ensure that we are doing everything possible to locate the titan and the five crew members. yesterday we stood up a unified command consisting of expertise from the united states coastguard, the united states navy, canadian armed forces and coastguard, and the titan's parent company, 0ceangate expedition. to date, those search efforts have not yielded any results. ..the navy has been in touch with the coastguard and is working to provide personnel such as subject matter experts and assets

as quickly as possible. locating the sub is hard, especially from the air, because it's white in colour. changeable weather and poor visibility will also pose a challenge to the teams. well, i'm nervous. i'm sick to my stomach with nerves. i'm terrified. i'm anxious. i'm not sleeping at the moment. i'm just hoping for good news. every single second, every single minute feels like hours — and we're losing time and we're losing opportunity to find them alive. the us coast guard has extended the search into deeper waters to look for the craft. radio and gps signals can't travel through water, so the only other way to detect the sub is through sonar and sonar buoys often used in hunting for enemy submarines.

they work by detecting movements and sounds in the water or by bouncing a sonar ping off the surface of the vessel and listening for the returning echo. so it's not only is it a small 6.7—metre vessel in very, very deep water in a large ocean, but it's also near to the wreckage of the titanic, and if you think the titanic was actually over 290 metres long, and that wreckage is all over the place, and there'll be some of that wreckage that's about the same size, so it's exceptionally difficult. it's basically a needle in a haystack. on day three, a canadian aircraft detected underwater noises. the data is the first possible breakthrough, with authorities relocating their search. as mentioned in the brief, we had a p—3 aircraft flying yesterday that had sonobuoys. the sonobuoys detected noise in the water. we don't know the source of that noise but we've shared that information with navy experts to classify it.

in the meantime, what we've done is reprioritise the two remote operated vehicles that we have searching the surface of the water in the area of those noises to see if we can locate the source of those noises and locate the people in the submersible. speaking to the families, how much hope can you give them after hearing those noises? listen, i think you | need to be careful. we need to have hope, right? but i don't... i can't tell you - what the noises are. but what i can tell you is, i and i think this is the most important point, we're searching |where the noises are, and that'sj all we can do at this point. reporters clamour. reports suggested that the banging is at regular intervals so may be produced by a human source. some of those on board are highly experienced. paul—henri nargeolet has travelled to the wreck site before. it has been surmised that he would know the protocol to alert search teams by banging for three minutes

every half an hour. the equipment that's been mobilised for this is the finest in the world, the most capable in the world. we have to hold out hope. i think, as you're aware, there's still life support available on the submersible and we'll continue to hold out hope until the very end. it later emerged the navy heard an implosion sound on the day the titan went missing, but search efforts continue. alistair greig, a ucl marine engineering professor, says the rescue operation is hugely complex and challenging. if it's very deep, it's going to be very difficult to rescue it. none of the conventional submarine rescue methods, which are designed mainly for naval submarines, would be able to operate down at the depth of the titanic.

even if it could get down there, the hatches would not match on to... would not mate on to the submersible. on thursday, last—ditch efforts are deployed amidst fears oxygen levels are critical. a french vessel with a submersible capable of reaching the sea bed and transmitting images to the surface arrives in the search area. the victor 6000 also has two mechanical arms capable of extremely delicate manoeuvres, such as cutting or removing debris. the resources allocated to search for the titan drew criticism online with the efforts to find rich explorers compared to resources allotted to rescue migrants crossing large bodies of water on small boats. in the weeks prior to the titan submersible going missing, greece declared a period of national mourning after a boat carrying migrants sank off the coast of pylos.

at least 78 people died, with hundreds more missing. does the secretary—general have any thoughts on the different _ responses to these tragedies? well, all lives are precious. i think all efforts must be made to save the lives of the people on this submersible. but by the same token, and i did say something similar on this yesterday, all of those who are risking their lives at sea must be protected. as the search for the missing vessel intensifies, focus turns to 0ceangate and the safety of the trip. cbs correspondent david pogue had travelled in the titan. yeah, you're bolted in from the outside. there are 18 bolts in a circle around the hatch. before we went, we had never seen the sub. we didn't know anything about it. there's very little information on the website, just that it's a state—of—the—art, one—of—a—kind carbon fibre submersible. i didn't know at that point

that you drive the thing with an xbox game controller. i didn't know that the ballast was, you know, used construction pipes. you just.. you get there and then you start seeing this stuff and now your mood crashes and you get a little worried, like, is this the level of polish and sophistication we're talking about? the night before, i was so panicked. but once i was in the sub with stockton and, you know, the scientists and the crew was outside doing what they had rehearsed over and over, i felt 0k. i felt excited. i felt like they wouldn't do this if it was really dangerous. the really nightmarish scenario is that they are alive at the surface, bobbing away, running out of air and unable to get out. everyone's got different opinions| on how subs should be designed,

how dives should be conducted, - how expeditions should be conducted. that being said, developing innovations and new...any| new technology, including _ submersibles, means that sometimes you have to go outside of the bounds of the regulatory scheme. _ as time marches on and news reports give hour by hour accounts of the dwindling oxygen supplies potentially on board the titan, experts begin to question the expedition. when we're diving in the mirs, the russian subs or the nautile, the french submersible, they're just like the american alvin. you know, there is a transponder system that's set up. it's a... it's a net that we navigate in so that we know where we are at all times on the wreck of titanic. we're in constant communication with the vessel up top, and itjust makes it for a much safer environment. i mean, when you're out

in the north atlantic, it is, you know, we only have a three—month weather window, which pretty much goes from, you know, the end ofjune to september, where the seas are calm enough to actually be out there and able to dive, which right now it's really early in the season so i'm not sure, you know, why 0ceangate went out this soon. but, you know, deploying subs in the water and spending all day, you know, on the wreck and coming back here, you know, 6,000 pounds per square inch of pressure, you're 12,850 feet down, and so every precaution has to be taken at all times. this entire week hasjust felt like a prolonged, nightmarish charade where people are running around talking about banging noises and talking about oxygen and all this other stuff. and the coastguard is out with aeroplanes. i knew that sub was sitting exactly

underneath its last known depth and position and that's exactly where they found it. we're live from london, i you're watching bbc news. if you've justjoined us, _ a major development on that search for the submersible. we just heard from the us- coast guard saying that a debris field has been discovered within the search area, i by one of those rovers - that they have on the site, near the titanic site... on thursday, around 100 hours since contact is lost with the titan sub, the devastating news came from the coastguard. an rov, a remote operated vehicle, from the vessel horizon arctic, discovered the tail cone of the titan submersible approximately 1,600 feet from the bow of the titanic on the sea floor. the rov subsequently

found additional debris. in consultation with experts from within the unified command, the debris is consistent with the catastrophic loss of the pressure chamber. upon this determination, we immediately notified the families. on behalf of the united states coastguard and the entire unified command, i offer my deepest condolences to the families. it was the ending everyone had been dreading. heartbroken. honestly, i... i can't even imagine how the families are feeling today. i was just profoundly hoping all day and all day yesterday _ that they would actually be able to save them _ we were always hopeful that, you know, with all this help coming from around the world

that they would be found. and now it's just heartbreaking. personally, i've lost two friends in the most horrific way. and, but i want, you know... speaking to the media, at least i want to have a human face on what these men stood for and what they lived their lives doing. and it's more thanjust this dive on titanic, and hopefully that is something that will come out. the families of the five men on board the submersible have begun mourning their loss after the international effort to try to save them. the family of shahzada and suleman dawood said... hamish harding, the explorer, was described as... the statement said...

what began as a rescue operation became a recovery mission. for those that dare to venture into the depths of the atlantic ocean, it can be an experience of a lifetime. but for the friends and families of these men, this outcome has been devastating. hello. we ended the weekend with some very big contrasts in our weather. across many northern parts of the uk, the heavens opened — downpours in places with thunder and lightning, gusty winds, too. this is what it looked like earlier

on the satellite image as that cold front swept across the country and you can see there the lightning. this is now mostly out to sea and the skies have cleared across many western areas. all the while, further south in lincolnshire, temperatures reached 32.2 celsius. and many will be pleased to hear that the week ahead is looking a lot fresher, but it will be a changeable one with some rain at times for our parks and gardens. let's have a look at the forecast, then, as we head through monday. that weather front is now well out to sea, and behind it, we've got these fresher atlantic conditions, so in the morning, belfast, 12 celsius, 13 in birmingham and around 15 expected in norwich and london. and it's going to be a beautiful sunny morning and a fine afternoon as well with scattered fair—weather clouds developing and, yes, a few showers will develop across northern ireland, parts of scotland and northern england, too. how about the temperatures? about average for the time of the year — 18 in glasgow, 23 expected in london.

now, tuesday's weather map shows another low pressure heading our way, so cloud and rain, yes, but this one is also going to push in rather humid and warm air from the southern climbs — subtropicalair, infact, so extensive layered cloud across the uk. a lot of rain across northern and northwestern areas. towards the southwest, quite murky around some coasts, and it will feel quite close, even though the temperatures won't be that high — 22 in london, 20 in belfast. if the sun pops out, it will turn a little warmer. and it will be a slow process for this low pressure to swing by because on wednesday, this cold front is still moving across the uk, and that will give one or two downpours, especially across the northern half of the uk. ahead of that cold front, it's still very warm on wednesday in london, and norwich about 25 celsius. that takes us towards the end of the week, and the jet stream will push in yet another low pressure, but that one will bring rain mostly to northwestern parts of the uk — not much rainfall expected in the south. so, let's have a look at the week ahead —

at a glance, quite a changeable week. i think temperatures will be pleasant. bye— bye.

live from london. this is bbc news one day on from a rebellion by the wagner mercenary group in russia — the whereabouts of its leader, yevgeny prigozhin, and the russian president are both unknown. amid speculation the russian president fled moscow during the crisis — america's diplomat says the attempted mutiny by wagner fighters shows cracks emerging in vladimir putin's authority.

survivors of the migrant boat disaster in greece ,