And revealing secrets. The man who broke the nsa spy story. Promising his biggest surveillance leak yet. We begin with that deadly mine explosion in turkey. We know that at least 151 people are dead. And hundreds more are trapped. Frantic efforts to reach the miners. An explosion started a fire inside the coal mine. In the western town of soma. Caroline malone is in turkey. Rescue workers are rushing to help more than 200 people trapped in this coal mine. Its thought a Power Distribution unit exploded causing a fire about 2 km under ground. A very serious accident has happened in soma in a mine. There is a a big problem due to a fire that started after an electrical fault underground. Some miners have been rescued the injured were rushed to hospital. Many of them were suffering from burns and smoke inhalation. Family members with loved ones trapped below ground gathered outside waiting for news. Manage crews are hoping to punt clean air into the mine, hoping to keep those inside alive. Well have caroline on the phone within the hour. Now to nigeria. Where a cabinet member said his government is open to talking with the radical Group Boko Haram. That. As us military surveillance planes join the search for the kidnapped school girls. The outside help. Is highlighting nigerias failures to deal with the crisis on its own. Rawya rageh has more. Theyre not only the face of the latest attack by the radical Group Boko Haram. But the missing girls of nigeria have also become the latest symptom of the countrys political paralysis. The current deadlock is between president goodluck jonathan, a southerner, and the northern political elite. It involves his governing Peoples Democratic party squaring off against the all progressives congress. The federal government has failed in providing security and equipping the military to contain boko haram and in applying resources appropriately across the states of the federation. But the states themselves are equally culpable, so it is not squarely in the terrain of the pdp, but cuts across both the ruling party and the opposition. The north is where most of boko harams attacks take place. It is badly underdeveloped, with some of the worlds highest rates of unemployment and school dropouts. At the heart of the divide between the north and south is a fight over Oil Resources concentrated mostly in the south. Some say chronic mistrust among political leaders has led to a fractured government, where accusations of manipulation have gotten in the way of cooperation and reform. The troubled state of the nation was something jonathan addressed last month when he pleaded for unity. There should be no room for selfish considerations that defeat the purpose of national progress. There should be room only for the national interest. But now, nigeria has come under pressure from around the world because of the shocking abduction of so many girls. And with it, questions about jonathans leadership. If anything the president is concerned about finding these girls from day one. He has not attempted to play politics with the lives of these children, these nigerians. And he will not do it. He will never do it. There have been many questions about the governments response. But looking ahead many argue this is bigger than the political survival of goodluck jonathan. This is about fixing nigerias political landscape. It has been months since the girls have been abducted. And Richelle Carey has more. The sambisa in Northern Nigeria is home to the radical armed Group Boko Haram. And it has come to represent fear for many nigerians. With such a strong boko haram presence, rescuing the girls will not be easy. Some nigerians call it the evil forest. The sambisa in Northern Nigeria is home to the radical armed Group Boko Haram. And it has come to represent fear for many nigerians. The Sambisa Forest is one of the biggest sites where the boko haram operates from. The Sambisa Forest is their sort of headquarters, their hiding place, because of the nature of that area since the sects have taken over the forest has become extremely dangerous. Its likely that the nearly 300 kidnapped schools girls are being held in the sambisa. It covers about 23,000 square miles about the size of west virginia. The forest was once a game reserve but came under boko harams control in 2009. It is thorny, overgrown, full of wildlife like poisonous snakes, lions, and elephants. The size and rough terrain make it especially difficult for search teams who have been relying on jets flying overhead. You cant see from above boko haram have bunkers that they can easily hide in and the drone capability may not be able to pinpoint where the guys are. Many familiar with the forest say its not just a matter of being able to maneuver through the forest. Its about knowing where members of boko haram may be hiding. Locals may be the key. What is crucial in the Sambisa Forest is to gather intelligence using the locals. Some locals do visit the Sambisa Forest. Some locals know the forest like they know their abcs. The miltary has to work with the locals to know where exactly they are keeping these girls. Currently the us is involved in the search using jets and drones are expected soon. But as our expert says, those overhead tactics probably wont work. John, keel have to see if search teams take his advice and engage the locals. Ahmenew gamawa is a lawyer and conflict resolution analyst at harvard university. He joins us this evening in boston. Welcome. Thank you for having me on the program. Thank you for being here. What do you think of the idea of boko haram, of the government negotiating with boko haram, or talking to boko haram . Well, one of the things on the ground now, i think that the options of the government are quite limited. There are two broad options, one is to use military force. This has a lot of disadvantages because these girls are still in the hands of the boko haram militants, and they are being used, not only by chiefs, but also as human shields. So its hard to conduct any military rescue operation without endangering the lives of these girls. And i think its in the interest of these girls and their families, should be the priority in any rescue operation, secondly, talking about negotiating with boko haram, in the video released on monday by the leader of the boko haram, he is demanding for the government to release the members of the boko haram sect that have been detained by the Nigerian Government. And in exchange they are going to release the girls. This sounds outrageous, and many nigerians in this insurgency think that nigeria should not negotiate with them. But at the same time, this would embolden the boko haram members, and theres no guarantee that they are going to keep their part of the bargain. Let me interrupt, how does the government have any clue that boko haram would live up to the deal . This is the question. In the past, there have been reports by many people to try to initiate a dialogue between the boko haram members and the Nigerian Government. And i think that the message were getting from the Nigerian Government is quite confusing. Up to now, they havent clearly defined their position, but i believe that the situation at hand is quite unique, and there is an International Attention on the Nigerian Government nigerians are demanding options, and to get to where the girls are, and at the same time, to start a conversation, to see if they can get them without endangering the lives of the girls. What impact is this having on the country . Well, the mismanagement of this insurgency, which has caused a serious problem in the northeast and across the north actually has made president jonathan to appear as a very weak and incompetent leader, and of course its going to affect the image of the country. Last week, they hosted the economic forum, as the biggest economy in africa. With this kind of atmosphere of insecurity, i think its a threat to investment. And its also going to affect the coming election, which i believe there cannot be a peaceful election when the country is under incessant attacks from insurgents without the country taking necessary action. Good to have you on the program. And thank you for sharing your insight. Surviving the threat of boko haram. Is a harsh reality for many in Northern Nigeria. This young girl debbie was just 12 years old when she saw boko haram kill her father and brother. She says the militants were urging her father. A pastor. To turn against christianity. They gonna give him a chance if he deny his god, and he told them would rather die then to deny his god, so they go ahead and shoot him. She is now headed to capitol hill. To try to convince congress to do more to find the kidnapped girls. Lisa stark will have more of her harrowing story. Coming up at the bottom of the hour. The top diplomat in talks to end the civil war in syria. Is stepping down. Lakhdar brahimi has been struggling to bring peace to the conflicted country. For nearly 2 years. Diplomatic editor james bays. Has more from the United Nations ambassador brahimi has. Been threatening to resign the job since he got it two years ago. Hes one of the most experienced diplomats anywhere in the world. A man involved in peace processes in lebanon and afghanistan. An 80yearold diplomat who has brought patience and experience to this role. Despite that, he cant bring peace to syria, he has decided he has to go. He has not given us many reasons in public. He has told us the Security Council in private. But i think its pretty clear what ended his term. He managed, and many people thought that he wasnt going to manage to get both sides around the table in geneva two rounds of peace talks, but in the end, he couldnt get the syrian delegation to even agree to his agenda of peace. Its very sad. As we continue as we have, to do everything that is humanly possible to work with the Security Council. We see neighbors of syria, and indeed with the parties themselves and the crisis. I think what has brought his resignation right now is the fact that he has said for sometime that he believes that the syrian be president ial elections would derail his process. Those president ial elections are going ahead on june 3rd. President hasad is standing for office again, and thats why the resignation will take place at the end of the month. The leader of syrias opposition spent this afternoon at the white house. Mike viqueria is live there. What have we learned about the closeddoor talks . Its interesting, with the white house and president obama, mixed feelings, and certainly reluctant to embrace one side or the other in the opposition. This was billed as a meeting between the president and the opposition with susan rice, thish National Security adviser, but they held it in the roosevelt room, which is just next to the oval office. What we have learned from the white house, they reaffirmed that president obama has support for the moderate opposition, and they reaffirmed the support for the political opposition, and ridiculed that president hasad and his regionim, they called him a parody. A lot of fanfare surrounded jarbas meeting with secretary of state john kerry last week. Why did president obama just drop in . Thats a great question, three years ago this summer, president obama said that Bashar Alassad had to go, and now he has dropped chemical weapons, and the administration has taken the steps to remove those, and 92 of them have now been removed from syria, but now dropping chlorine barrel bombs on the opposition, he has the upper hand on the battlefield. And things are not going well. The humanitarian work continues, and he made a show of it. But the white house has made it a protocol. And politics are not going well for the opposition. I think they decided to lowkey this event today at the white house. In ukraine, the us says Russian Troops are still stationed on that countrys eastern border. And has pictures to prove it. Last week. Vladimir putin claimed that moscow was pulling its forces out. The state department has released these Satellite Photos the images on the right were taken over the past 4 days. What looks to be helicopters and armed vehicles. Can be seen on russias side of the border. In eastern ukraine. Prorussia rebels have staged their deadliest attack yet on government forces. The Defense Ministry says at least 6 ukrainian soldiers died when the rebels ambushed them. Near the town of kramatorsk. Paul brennan is in eastern ukraine. Tuesdays ambush is the biggest loss of life, and existing sophistication on the pro Russian Military in the recent weeks. It was an ambush of at least 30, two armed personnel carriers, the lead vehicle was disabled, using a grenade launcher, and in the armed fight that informed, at least six ukrainian soldiers were killed. And seven more injured, all evacuated from the scene eventually, but only after an intense struggle there. It couldnt have been worse. The ukrainian Prime Minister was in brussels, trying to push a peace plan, and russia is trying to push a plan, based on a four point agenda. But kiev is cool on that, because one of the central planks of that proposal is a deescalation disarmament on both sides, and also supporting the pro russian paramilitaries, and they cant have it both ways. Up next. Robotic warfare. The fight to stop these frightening machines. And erasing your online past. A Major Court Ruling today. About privacy on the internet. A landmark ruling today against google europes highest court says google users will be able to have links to irrelevant and outdated sites removed from the web google called the ruling a disappointment our science and Technology Correspondent jake ward has more europes highest court has issued a ruling that allows them to be forgotten. But its pretty difficult to enforce this up close. This ruling, which cannot be appealed, forces google to come up with information for requesting removed from the Search Engines results. In this case, a spaniard wanted google to stop showing outdated information about a debt property being auctioned off and he said that he paid that debt and the information listed was outdated and embarrassing to him. Google said that it was legally published in the newspaper. And it shouldnt be responsible for censoring that information. And now google is responsible. The court said google has to directly examine the merits of any requests like this from now on. Google will take down information that will open you up to fraud, like your Social Security number, but what is or isnt accurate. Can you committed a crime and your record was expunged, can you go in and ask to have it removed . A guy who has my name, jacob ward. I believe right now, hes in courtordered psychiatric treatment. And thats what the google results say. So can i ask google to take all of it down on the grounds that its inaccurate and embarrassing to me . Thats what we dont know. And thats what google is going to have to figure out. Right now killer robots are still sciencefiction but human rights advocates say the technology will eventually get there they want the International Community to ban killer robots before they are ready for the battlefield the worry about machines that are completely autonomous and can decide if and when to open fire thats more advanced than Drone Technology that still relies on human decisionmaking un members are debating killer robots this week and retired Army Lieutenant colonel, tony schaffer, is in washington tonight, and talking about developing robots for military use, what can machines do right now . A heck of a lot. But a lot of it has t has to bee by hard wire. Complex programs go into it. Basically, when one of these machines functions, it has to have a human being watching. Much like you and i function, our heart functions autonomously. But we have cognition, very similar to what goes on with machines. But do we have the ability to make them autonomous . We do. Many of them were envisioned five or six years ago, with future combat systems. The army was going to where you could have logistical trucks move gear forward, literally push buttons, and the concern is what happens if you Program Weapons of destruction, weapons to do something else. Yes, its possible, and the question is will it become reality . What do some of these machines cost that were talking about . The cost is like any other piece of technology, and the more you build, the cost comes down. So much of it has to do with programs. The Artificial Intelligence is developed little by little. Research lab, 7 million, was announced four years ago to talk about the ethical of it. The cost will be lower as it becomes more reliable. So its interesting. So designers and developers are trying to make an ethical machine, and how do you make an ethical machine. Thats a good question, one that they will be debating over the next several years. Were looking at 21st Century Technology with a set of rules, the geneva convention, which are 19th centurybased binary, good or bad, right or wrong, and the machines can do things that we never imagined 20, 30 years ago, and you have to consider the fact that this is going to be the ultimate a symmetric capacity. In the old days, you had to have the battle space, and here a handful of machines if used correctly can give you a huge advantage in the battle space if used correctly. So how they are deployed regarding any military activity. It seems like a scene out of star wars, but at the same time, why would you put a human being