it is incredibly detailed and hard to follow. it comes to a couple of conclusions. one is about whether or not arafat was poisoned. the other is whether or not that poisoning was the cause of his death. scientists say they are 83% certain he was poisoned with polonium 210. 2 distinct points they are making. this is a difficult business. a short half-as life. the traces are tiny. the samples taken from arafat's personal effects and bodies last year. caveats. all sorts of you will hear them being expressed by scientists in a short while. >> a lot of extrapolation.

thank you very much indeed for that. i am joined by yasser arafat's widow. thank you for joining us here on gmt. to the your response findings as you understand them from this particular report? this report is very accurate actually. i saw some analysis and some doubts about this. we are speaking about the most accurate people in the world. analysis onsome television about the word moderate. there is not mean polonium. the only thing we can make 100% analysis is if it is in the dna.

conclusion in the that it supports the consequence that this was poisoning with polonium 210. scientists if they were ready to say all this in court and whether it was murder, they said, of course we can testify in court that this was a murder and an assassination. just before you do that, in your view, you would say there is no doubt. we are expecting another report, which is being put together by russian scientists where there will be considerable donald. -- doubt. the swiss are sure and they

are ready to discuss with all kinds of scientists. peopleve high standard who already witnesses in court for the findings. >> you are satisfied that these findings are conclusive. >> i have not been more satisfied than those -- than in those findings. this whole time, they have been testing his belongings. a scientist is ready to testify in court that it was a murder, and assassination. this polonium was taken from a nuclear reactor.

who would know which kind of nuclear reactor this polonium was taken from? 18% more in his body. a question. us to who in your mind has carried this out? >> yasser arafat had enemies all over the world. we are seeing peace flourishing after nine years. i cannot accuse anybody. conclusions. to i want to document this crime for history. towould you have an idea as why murder yasser arafat? at the time of his death, he was in his mid-70's.

it was not a well man -- he was not a well man. >> mandela is 19 years old. arafat -- 75 is not old ford nowadays. -- is not old for nowadays. he wanted to make peace for people in the middle east. this old man, who would sometimes speak about age. he wanted to do peace with the other si. >> what is the next up for you? >> me and my daughter are for all of the legal aspects. it might take some time.

we are doubting a lot of murders. i want to say something. did notple would say have the same kind of polonium as the russian spy. he was given a huge dose of ohlone him that made all of his polonium thatf made all of his hair go down. >> thank you very much indeed for your comments. it is an important day for you. arafat talking to us about the scientific findings. we are going to get the forensic report and switzerland. we are expecting a news conference in the course of the

next half hour and we will bring that to you live here on gmt. in the meantime, we will move on to the situation in greece. thepolice have stormed headquarters of the national broadcaster and removed employees, who were protesting the station's abrupt closure. they were still producing live broadcasts. we have this report from athens. tensions outside the headquarters with staff trying to push through police lines. officers have reclaimed the building. the operation began before dawn. right police evicting workers five months after it was shut down. reports say some tear gas was used. inside the building, it was relatively peaceful. have beeno resisted detained. protesters have been gathering,

furious at what happened. on the what i saw cameras, they broke the lock on the main entrance and started gates. in from the metal they also broke the door of the side entrance. so thatcame in darkness no one would be around. a have violated my life. democracy, they have destroyed everything. i will stay here. i refuse to leave. 's national broadcaster was taken off air in june. the government called it wasteful and corrupt. the staff was sacked in a money- saving effort and the screens went to black. an interim replacement has been set up. it has been a chaotic transition. ert has continued on line, refusing to be silent.

the standoff, peaceful for now, goals on. the government says it has to retake the building so the new broadcaster can move inside. do greeks still have the stomach for yet another fight? twitter is going public in the next couple of hours. we have a bit more information a little later in the program on investment opportunities. the company has never made a profit. let's remind ourselves on what kind of impact twitter has made. the first tweet was sent in 2006 by the cofounder. 2008, the hashtag was first use. the company was said to

be worth $1 billion. the following year, that shot up to $10 billion. that is really army started tweeting details on attacks. in september of this year, papers were filed to list the shares on a local stock market. david has been looking at what is on offer. twitter, you only get 140 characters to tell your story. for the story of twitter, we need only four characters. biz dorsey, evan williams, glass.nd noah it has been a bumpy ride, to say the least. this is the story of your average silicon valley startup.

they were desperate for a new multibillion-dollar idea. jack dorsey had the idea of a way of communicating what you are up to. you can see from his original one page blueprints that it was a simple idea. yocan see that he was still a student when he came up with this idea. the only status options he provided were in bed or at the park. >> they wanted to build a technology that would connect them to their friends. to do that, they ended up tearing their own friendships apart. from the moment twitter was hatched, it became this thing that started to change the world. off with the rest of the world. each one of the four friends in it up pushing each other out of the company one by one. >> noah was the obvious

candidate to become ceo. he was forced out in 2006. jack was forced out in 2008. shunted to a non-job and stop coming into the office. the price tag is somewhere around $15 billion. the model does not guarantee sustainable revenue. we are already getting hints of whatwitter might become. send someone coffee on twitter, or a token they can read team. then there is advertising. all of this depends on twitter remaining popular and making sure that the moneymaking does

not get in the way of people's enjoyment. what of our four characters? they will be getting wildly different amounts. $500dorsey could get million. his shares could net him around $1 billion. $10 million.y get how will he cope? h could end up with the start up equivalent of loose change. onstay with us here bbc worldthomas -- news. i will be joined by a campaign group. it is all getting very messy in madrid.

rubbish has been piling up on the streets of the spanish capital. private cleaning companies want to lay off more than a thousand workers after the city slashed its cleaning budget. plastic bags,, and rubbish are littered across of wintry. street cleaners walked out in protest over job cuts and salary reductions. even this statue proclaims to be on strike. residents are unhappy. .any understand >> coworkers must have reasons. is it the responsibility of the city to manage those needs? i hope they resolve this quickly.

>> not everyone is so impressed. i have never seen the dreaded look like this. it is really depressing. the city is in a state where it cannot clean up the rubbish. the cleaning company says the cuts were necessary. deep spending cuts throughout public services led to mass demonstrations and strikes. this one has an immediate and unwelcome effect on the lives of all those living in the capital. can get more on all of our stories if you go to the bbc news website. you can look at some of the fee -- features about how twitter change the world.

catch up on some other news for you now. international inspectors overseeing the dismantling of the syrian nuclear weapon frompile have used footage cameras. the images show the building is empty and has suffered extensive battle damage. haveast 1700 congolese surrendered to ugandan authorities. reports from uganda's military say ey are being held across the border. there was an offensive by u.s.lese troops backed by forces. scientists in britain are looking for one, -- 100,000 volunteers prepared to have their entire genetic code

sequenced. it would be available on the internet. there are some fears that the privacy of participants could be put at risk. it all feels a little counterintuitive. the three heads of the u.k. spy or intelligence agencies are appearing in public for the first time to talk about their work. 's intelligence 6.eration, mi-5 and mi- mi-6i-5 director and the teeth will be questioned at parliament. ef will be questioned at parliament. edward snowden is currently in moscow and he released documents

that revealed agencies could tap into the internet communications of millions of ordinary citizens. it is going to be quite a day. with me is nick. thanks for joining us. what do you make of this? it is unprecedented. these people have been entrusted with intelligence gathering. cia director first appeared on television in the 1970s for the idea of public testimony. it is not new around the world. it is good that britain is catching up with that openness. >> is it the opportunity for revelations? everyone is looking at this issue and thinking, how can this level of intelligence gathering be going on against people like you and me? others are saying, it is their

job. fort is a good opportunity them to talk about the legal framework and it gives them the authority to collect unprecedented amounts of data. they are raising questions about how their actions weekend security. this is an opportunity to answer questions and reassure the public about what they have been doing. >> favored cameron said the other day he doesn't want an air fairy approach. perhaps it is better the public does not know. >> if you look at the history of intelligence services around the world, things have happened without the overseeing of the government or the lawmakers. if we are going to have a civil society that we can spread around the world, britain nds

to step up and say, we are doing these things. here are the rules. more importantly, what is the framework around, do you survey innocent people? >> you would be very much in favor of curbing the powers of these intelligence gathering organizations. we always need surveillance. is it right for politicians and not judges to decide on warrants? is a weakness. we could also have much more transparency about telling people big picture how often they do those operations. >> that would be like the number of people who are being monitored. ed snowden has given us that openness. exactly what president obama has said. the u.s. will publish more details about how many citizens

are it and the companies involved are publishing their own reports about how many requests they receive. that kinds of transparency -- kind of chance tennessee and forms the public. a lot of espionage is economic and industrial from country to country. want that kind of thing to get out. there is a question mark about how much leaders are informed about the day to day operations. itsident obama has taken upon himself to learn more about what is happening. i hope governments listen to the edward snowden revelations. listen hard this afternoon to see what they have to say. things very ch for joining us here.

coming up in the next half-hour, look out. the olympic torch. >> funding of this presentation is made possible by the freeman foundation, newman's own foundation, giving all profits to charity and pursuing the common good for over 30 years, union bank, and united healthcare. >> my customers can shop around, see who does good work and compare costs. it can also work that way with health care. with united healthcare, i get information on quality ratings of doctors, treatment options, and estimates for how much i'll pay. that helps me and my guys make informed decisions. i don't like guesses with my business and definitely not with our health. >> that's health in numbers. united healthcare.

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welcome back to "newsline," i'm yuko aotani in tokyo. here's some of the stories we're following this hour. police in china say those responsible for the deadly bombing may have been acting on a grudge. a senior u.s. official says the country is planned to ease economic sanctions if iran agrees to stop expanding its uranium enrichment program. and south koreans are adjusting

their seasonings to export their special sauce to diners around the world. chinese police are searching for clues after a series of explosions. several small bombs went off on wednesday near a communist party building. the incident follows close on the heels of a deadly car crash at the capital. >> reporter: the bombs went off in the morning. they exploded near the party building in the city of taiyuan. one person was killed. eight were injured. >> translator: i heard a huge blast. >> translator: there was black smoke and nails were scattered all over the place. >> reporter: police put the area under heavy security. officers remained at the scene on thursday. chinese media say investigators found nails as well as electronic circuits and small metal balls scattered around the

area. investigators suspect the devices were homemade. they believe the party building was the target of the attack. some people reported hearing up to eight explosions. observers say whoever set off the bombs may hold a strong grudge against local party and government officials. police have identified a car used in the attack. the china business news says surveillance footage shows someone planting explosives about 40 minutes before the blast. the person is seen leaving in the black vehicle. security officials have been on heightened alert since a car crash last week near tiananmen square in beijing. >> translator: i would feel anxious if incidents like these happened over and over. >> reporter: authorities' reaction to the latest incident contrasts with their handling of the crash.

officials deleted images in video clips of the earlier incident from the internet. but they have left images showing the scene of the explosions online. and they apparently have not restricted the chinese media's coverage of the blasts. government officials have blamed the car crash on members of the wieger ethnic minority. chinese ethnic groups are a highly sensitive topic for the country's leaders. officials have not said the latest incident involved ethnic issues. security personnel are working to avert any further incidents. they're taking extra precautions ahead of a communist party conference that begins on saturday in beijing. nhk world. a senior u.s. official has thrown out an incentive in talks about iran as nuclear program. the unnamed official said

the u.s. will ease economic sanctions if the iranians put a freeze on the program. president rouhani has been trying to improve his country's standing. and the iranians presented a new proposal in talks last month to try to move the negotiations forward. they have offered to down size their uranium enrichment program. the white house official said that if the iranians stop expanding the program they would be ready to offer limited and targeted relief on sanctions. the sanctions on the banking and oil sectors have crippled the economy. german officials are hoping to learn more about the allegations about the u.s. tapping the cell phone of angela merkel. they're hoping to spoke to edward