hello, and welcome to "gmt" on bbc world news. i'm stephen sackur. top stories -- safeguarding britain. security services, under intense scrutiny after the brutal murder of a soldier in london. could the british authorities have done more to prevent the killings? officials confirm both suspects were known to the intelligence services. a trail of smoke and a terrifying moment in the skies above london. and jen failure on a passenger jet leads to an emergency landing at heathrow. a collapsed bridge and miraculous rescue in the northwestern united states. drivers are plunged into icy water and lived to tell the tale. and alice is here with the latest on business including tough times for christine lagarde at the imf. the headat is back on of the international monetary fund. she has been called again this

friday in a corruption inquiry that threatens to plunge to the fund another leadership crisis. it is seven :00 in the morning in washington, d.c., 1:00 in the afternoon in stockholm and midday here in london where thousands of british muslims are as usual attending friday prayers. mosques say they will use this opportunity to condemn the savage murder of a british soldier on a london street just two days ago. meanwhile, the british government is defending its security services against accusations they fail to take actions which might have prevented the killing of drummer lee rigby. the two suspects arrested at the scene had previously been investigated by emi five, but they were not under surveillance at the time of the attack -- had previously been investigated by mi5.

hometown of drummer lee rigby and the north of england, a gathering to express grief and sorrow over his brutal murder, an attack that left a nation still in shock. sympathy also on show at his family's home in town. but there have been mounting questions as well. it has emerged the two suspects in what is being treated as an act of terror, michael adebolajo on the right and adebowale on the right have been known to intelligence officials. >> if we had that kind of society that could control everything, we would be creating the kind of society that these extremists want to see. >> this was michael adebolajo at an islamist demonstration in 2007. experts underlined the difficulties facing the security

services. >> when does a person who expresses radical views and joined a radical group of philip over to be a violent extremist, someone who is going to commit a crime like this? redind the signals, the flags everywhere, i think is enormously hard. >> drummer lee rigby, 25, had wanted to be a soldier since he was a little boy. he had seen active service in afghanistan. he had a two-year-old son of his own. the traffic is flowing again outside the army barracks in south london near the scene where drummer rigby was killed. but the growing array of tributes here and the police presence underlined the impact of what happened. and was in the attack any kind of threat against and communities need to guard? fromber of the questions the fallout of this incident. >> more details have emerged about the two suspects. 28-year-old michael adebolajo

who was filmed holding a knife and ranting after the attack is a british man of nigerian descent. sources say he was raised as a christian but converted to islam after attending college. he is also said to be linked to a banned islamist group and has been seen preaching and handing out leaflets on london streets. , a 22-ond sub -- suspect year-old from southeast london but of nigerian descent. reports suggest he also was not brought up in muslim but converted to the religion when he was 16 years old. it has also emerged both men were already known to british security services. that brings me to our guest here in the studio, our security correspondent. welcome, frank. i have to start by asking you, what is the latest we know about what the british authorities, security services, knew about these two men, when they knew it, and how they responded? >> they did not initially admit

they knew anything about these men until david cameron confirmed, the prime minister confirmed yesterday in a speech -- he mentioned that he had heard the reports and would not comment any further. after that, i think he sort of punted and whitehall officials have confirmed that both of these men had been subject to security service investigation, but sometime in the past. the terms out they had been for quite some years -- had files on them for quite some years, as others. the question everyone will be asking is, given what happened on wednesday, should they have done more? should these people have been more closely followed? they were not under surveillance at the time you mentioned. even if they had been, it is not clear someone would be able to prevent the attack happening straightaway. large pool ofrly people who have various reasons to be disgruntled.

people have perfect legitimate -- perfectly legitimate grievances, that at some stage, a tiny minority of that slip over into violence and it is hard to predict. >> indeed. is it possible to put a number of the pool of people who are of interest because they seem associated with extremist? >> lord allen west, security minister under the previous governor -- government, the labour government of gordon brown, was talking about this yesterday and he referred to 2000. but the figure is arbitrary. there is a euphemism where people talk about striking the crocodile nearest to the canoe -- meaning they have to prioritize. they are not like east germany, cannot monitor everybody. but there will be accusations that this was an intelligence failure. >> and there will be a series of questions about in the future whether the british authorities

have to be quicker to turn to, for example, electronic surveillance of these people of interest. >> that is the trouble. when you have something like this, there is always the risk the pendulum will swing the other way and people who want to actually gather as much possible data and information will then have the upper hand and say, come on, we have to do away with all of these checks and balances. there is always that risk some people will try to sweep it away and be over draconian. what you don't want is a whole communities where everybody is fighting on each other. in a case of this particular , michael -- i get confused about the two names, because they are so similar -- the older of the two, he was quite well known by a number of people. he was preaching. to be honest, i think a lot of people literally thought he was all talk. rarely it was a bit more than that.

and people now say i wish we had spoken to him, if we had any idea he was going to do that we would have tried >> to stop him. >>is it as simple as saying the security services have to take every individual case on its merits? there is not a benchmark beyond they could automatically do another phase of monitoring or surveillance, act the following of an individual? >> they have a daily meeting in which they kind of review these cases and decide which are the ones are most urgent. you've got to remember that pretty much once a year, if not more, for the last six years, there have been major terrorism case is coming to court here in britain with convictions, often with guilty pleas. really, big series plots about blowing aircraft out of the sky. the priority will be to stop the really big things. they can't actually see into the mind of people who just one day might decide that radical views need to turn to violent action. >> franco, a fascinating topic.

thanks for joining us. our reporter at the greenwich islamic center, pretty close to where the murder took place on wednesday. i know there has been an awful lot of talk today about unifying communities, about friday prayers being used as an opportunity to send that kind of message. what has been happening in the mosque just behind you? since the killing on wednesday, mosques up and down the country have been quick to condemn what happened. moment the is a community should unify and not divide. the mosque behind me is no different. we are less than a mile away from where that incident took place. let me just read a statement prepared on their webs -- >> we appear to have a problem

with the satellite. we will see if we can bring her back. i think unfortunately the gremlins have defeated us. unfortunately we have to leave her there and we will try to come back to the story later on if we possibly can. a fifth night of riots in the swedish capital stockholm has seen a police station attacked, to schools set alight and at least nine cars burned. the arrests, which is rent -- those fatalrom shooting of an elderly man who was wielding a machete in public. troubleifth night of in stockholm. this is where it all started last sunday. on thursday night, firefighters put out another blaze. the trigger for violence was when police shot a man wielding a knife. but local people say the wider context is deprivation.

know anybody happy about this, but the children develop find any jobs. job.ey don't have a they don't have good education. that is why they are doing these things. >> the attacks on cars are at random. upmarket cars are not particularly targeted. in this case, it is a fan. it seems to be random attacks on vehicles simply to create damage. the police say they are not intervening heavily. liaising, rather, with community leaders. but they do intervene if necessary. >> when things happen, we have to go in. we go into secure the area. the rescue team can do their work, to make it safe for the

people who live there. >> earlier in the week, and library was burned down, a kindergarten and a school had been attacked, a station vandalized. there is clearly a lot of anger out there, but the target of it is ill defined. stephen evans, bbc news, stockholm. >> stay with us on "bbc world news." insects with a picky appetite. how cockroaches have evolved to avoid your household poisons. some of the most gripping drama at this year's cannes film festival is not on the screen but unfolding for year in the city's posh hotels. for the second time in a week, cannes has been hit with a major jewelry theft, a diamond let this -- diamond necklace worth 2.6 million dollars was

stolen from a hotel room. last week, thieves ripped the jules safe off the wall -- jewel safe off the wall. a basin set carried out in an upstairs room. a diamond necklace worth two $.6 million has simply disappeared. it has been part -- it had been described by the jewelers as one of the most beautiful in the collection. celebrities like sharon stone and paris hilton have been there when it was shown in public for the very first time. the necklace had been heavily guarded, but it went missing under the noses of guards. >> they went to the room and they took off the jewelry and put it on the table.

then they did a control -- whether anything was missing. ,hey found out them necklace but the value of 2 million euros, was not there. >> this is the second jewelry heist of the festival. opening night, gems worth $1.4 million were stolen. an employee room was broken into and somebody made up an anti--- made off with an entire safe. there was no sign of forced entry and how the thief managed mid -- managed it is still a mystery. sorry about that little problem. i need to tell you about your rant, because campaigning for the presidential election begins -- tell you about iran. the candidates will be allowed

to go forward in the first round of voting. james reynolds has this report from neighboring turkey. iran's guardian council has decided that eight men can stand for president. the council has rolled that each of these men is trustworthy and pious. it believes that none of them iran'ssrupt the raven -- system of clerical rule. they include the chief nuclear negotiator. he lost a leg fighting in the 1980s.aq war of the he is seen as a conservative who is loyal to the supreme leader. the mayor of tehran is also standing. he is a conservative critic of the current president within a .ob -- ahmadinejad a former air force commander and qualified airline pilot.

reza is linked to the reform movement. he is a former vice president who served a decade ago under the reformist resident. one of the most experienced candidates in the race. he served for 16 years as iran's foreign minister. he now advises the supreme leader on foreign affairs. and this race goes ahead without one of the most famous names in iranian politics. the guardian council struck of the candidacy of the former president rafsanjani. also disqualified a close ally of president ahmadinejad. ran'scontest i clerics want no surprises or high-profile challenges. >> three people have been

rescued from an icy river in the united eight after a section of a busy highway bridge collapsed. the accident happened in the northwestern state of washington about 100 kilometers north of seattle. it is a driver's worst nightmare, crossing a river on a bridge only to feel the road beneath you give way. for several vehicles using the interstate 5 highway and washington state, it was a drive home that ended in the cold waters 50 feet below. lorries, cars, and the .ocuments -- occupants trapped miraculously, all were rescued. start tothe bridge fall. forward momentum just carried us right over. as i saw the water approaching, it was just one of those where you hold on as tight as you can. just a white flash and cold water.

definitely cold this time of year. >> a rescue operation involving divers and dinghies search for people in the river. three were taken to hospitals nearby. --we are at a moment where pretty heroic work. we all to be celebrating tonight, in my view. we will assure washingtonians we will have an extremely thorough investigation to find out exactly what happened. >> the safety of bridges is becoming an all too familiar issue in the u.s. several years ago 13 people died in a similar accident with their vehicles plunged 70 feet into the mississippi. more than a quarter of washington's bridges are considered structurally deficient. the cause of this latest accident is believed to be a lorry hitting the structure. an investigation is now under way. constant maintenance work means of this aging bridge and many others in the united states are

a drain on resources. now let's stay with the transportation problems, and unlike in the united states, this one is all about a near miss actually. just hours ago londoners saw a terrifying sight in the sky. a british airways passenger jet clearly in trouble with the smoke trailing from one engine flew into heathrow airport. these pictures were taken by one of the 75 passengers on board the airbus 319. thankfully there were no injuries when the airplane was forced to make an emergency landing at heathrow. you can see where it ended up. an eyewitness and afterward described just what happened. this morning.p we started carrying out our area delivery. one of my colleagues pointed up to the sky. i turned around and had a look and could not see anything. they said they had seen a plane on fire.

the clouds were quite low because it is raining heavily. then it came out of the clouds and you could see it was a british airways airplane. the right engine was on fire. flames coming out, all the way back to the tail. cap coming in and out of clouds. as we kept looking, it came back outside the clouds again and it started getting lower and lower and then from side to side. , even morek smoke than when we spotted it first. it started getting lower and lower. it went behind an apartment on the river thames. all we could see was a trail of black smoke. we panicked. we were in shock. should have gotten our phones out and maybe a recording but we were in such a state of shock. had never seen anything like it. absolutely terrifying. >> of course, there have been delays at heathrow, but at least one runway has since been reopened.

the scouting movement in america has voted to allow openly gay members to join for the first time. more than 60% of the national council supported the change in a meeting in texas, but there will still be a ban on gay adults being scout leaders. a report from washington. >> for more than a century, young boys have joined the scouts in america. the motto -- physically strong, mentally alert and morally straight. but not everyone has been allowed to join. for decades, there had been a ban on openly gay man in the organization. scouts cheering after hearing the news the ban has been overturned, following a vote at the national conference. >> it is a victory for scouting, for gay youth. they will no longer have to hide in the closet where they are participating in their scout activities. it gives freedom and acceptance

to gay youth in the scouting program. historic but also devices. there has also been an active campaign against allowing homosexuals and the scouts, with some conservative groups saying it is incompatible with the scout oath. >> it injects sex and politics into the boy scouts of america. gays are already in the boy scouts but they have to be discreet and appropriate. they cannot be acting out loud and proud. some say it does not go far enough. gay scouts still are not allowed to become group leaders. bbc news, washington. >> u.s. secretary of state john kerry is holding a second day of meetings with israeli and palestinian leaders as he attempts to revive the peace process. he said he believed progress can be made. the two sides remain divided over israel he settlement building on the west bank.

they are the planets great survivors. i am talking about cockroaches. despised by most humans, but notorious for being close to indestructible. it seems the good old cockroach is more sophisticated than we give him credit for. they outsmarting our attempts to get rid of them. be -- be used by pest controllers are not working. not because they have become immune. scientists have found the cockroaches reorganize their sense of taste to this like glucose, the sugar used in the batit. >> a cockroach being offered a does in figure solution in what must be the world's smallest taste test. reactions have revealed a trick they evolved to evade our attempt to catch andn the righte developed a disliking for a specific sugar, glucose. that is why in these experiments, the hungry pests

reject the glucose rich jam but swarm over peanut butter. a change in the sense of taste came about less than a decade after test controllers started using glucose to sugarcoat poison bait they put down a people's homes. in the collection of the natural history museum are about one third of the 4006 hundred species of cockroaches in the world. only about 30 five the kitchen -- this shows how quickly the pests adapt to evade the chemical weapons. this slow-motion footage shows of the adaptation in detail. when the cockroaches are offered glucose, it shakes its head. if you look closely, you could even see it spit the liquid out. scientists were actually able record the activity of the cockroaches taste cells, the equivalent of their taste buds, demonstrating that these mutant cockroaches -- the once sweet flavor of glucose now tastes bitter. >> it is certainly interesting

they developed an aversion to a food substance. but it is not very surprising, because it is part of a poison. just another example of natural selection in action that is happening all the time. for instance, drug resistance in diseases. >> for now, it seems cockroaches have just one bad one battle in the evolutionary arms race against us. >> you can't keep a good cockroach down. coming up in the next half hour, could this be a revolution for higher education? in the universities are now offering free online courses to millions of people around the world. we are going to hear from a university involved with the scheme and to students who are benefiting from it. that is all to come. >> funding of this presentation is made possible by the freeman foundation of new york, stowe,

vermont, and honolulu, newman's own foundation, giving all profits to charity and pursuing the common good for over 30 years, and union bank, and fidelity investments. >> your personal economy is made up of the things that matter most, including your career. as those things change, fidelity can help you readjust your retirement plan, rethink how you are invested and refocus as your career moves forward. wherever you are today, a fidelity ira has a wide range of investment choices that can fit your personal economy. fidelity investments -- turn here. >> "bbc world news" was presented by kcet, los angeles.

hello, you're watching "newsline." i'm shery ahn. let's get started with a quick look at the headlines.

u.s. president barack obama has defended the use of drone strikes against suspected terrorists. he says it's legal and necessary for self-defense. media in britain say security services knew the suspects accused of murdering a soldier in london. the pair is under arrest, and police now have two other people in custody. and a doctor ignores her own health needs to help others in rural china. she's one of many physicians struggling with a higher caseload in the countryside. barack obama has launched a spirited defense of a tactic he has become to rely on for suspected terrorists. the u.s. president says the use of drone strikes against al qaeda, the taliban and affiliated groups is justified. he laid out the case in a speech on his second term counterterrorism strategy. >> we are at war with an organization that right now would kill as man