a large explosion hits a busy neighborhood in turkey's capital killing at least 28 people this is al jazeera live from london. also coming up. at least 12 people are killed after gunmen target hotels in an ivory coast resort town. french investigators say public safety should have come before a suicidal pilot's right to privacy.

angela merkel's refugee policy is put to the test. we begin with breaking news out of turkey. there has been a massive explosion in the capital in a major tourist area. at least 28 people have been killed. the cause of the blat is not yet clear-- blast is not yet clear. >> reporter: mounting concern about the overall security situation in turkey right now. after this explosion that ripped through a very popular and densely populated neighborhood in the capital. eyewitnesses say the explosion went off close to a bus stop in that neighborhood, but there were many people around. the government has instituted a media blackout at this hour. so no official figures so far as

the casualties, but there are concerns that casualty figures could grow throughout the evening. there are forensic teams on the scene now trying to figure out what happened. no group has yet claimed responsibility for the attack and the government has not yet blamed any particular group or individual for this attack. this is of grave concern because this is the third time since october that an attack has happened here. there was one in october that was blafd on i.s.i.l. that killed over 100 people, another in february which was blamed on a kurdish splinter group that killed dozens of people, now and at a time when grovt say that they have taken extra security services a turkey expert is here with us. first, your reaction to this

attack, in the way it happened in a highly populated area >> it took very close to the government ministries. the suspicion is p.k.k. or a p.k.k. splinter group may carried this out when we had a conversation three weeks ago, i said to you is this situation a security situation for turkey, the new normal. is this what they're going to have to deal with. is this the result of their current policy of fighting the war on two fronts? >> insecurity now is going to be the defining characteristic of the internal dynamics. the p.k.k. around state are in a bloody confrontation and this constitutes the third major attack in the area in the last six months do the turkish population, i mean, to have to live with this

uncertainty, and we're hearing it was the p.k.k. or an affiliated group, do they want to live like this? are thereon going conversations about whether this policy is the right one? >> the turkish public voted for the ruling justice development party or a.k.p. in the november elections last year precisely to promote security and stability in turkey. what they're getting now is insecurity and instability. it is no surprise they have imposed a bleed i can't blackout because it may under mine the image of the pent erdogan as a stabiliser in the city they will ask each other, do you feel safe, what might happen next. are there conversations that go on behind the scenes that review

these policies as they go along. have we bitten off more than we can chew? >> on the ruling party there is very little debate going on. at present erdogan completely dominates the political scene in turkey, also the ruling party as well as parliament. there is no institution or individual to challenge his authority do you think people will be asking questions about how this attack could have happened specifically where it has right in the heart of the capital when the threat level was already heightened? >> i think that that it tack will raise question mark-- attack will raise question marks over the efficiency of the security forces, whether this is a major security laps that has allowed a third major attack to take place in ankara over the last six months. it will raise some red flags, and i think that the government will have to carry out a series

investigation and carry out some internal reform to prevent a further attack in the future it is a pretty intense time. it has a lot on its place having difficult conversations with the e.u. last year about what to do with the situation of refugees and then, of course, it is fighting this situation of its own internal security also. >> turkey is at the heart of the sectarian factional and ethnic chasms that are ripping the area. turkey is fron r confronting the challenges from syria and now in a bloody confrontation with the kurdistan workers party or the p.k.k. they're facing a number of multiple security challenges it seems to be overwhelming its capacity to deal with them thank you very much for joining us.

now to an attack at a beach resort in ivory coast. forces raid a popular designation. 14 civilians and two soldiers have been killed. the government also says security forces have killed six armed men that attacked three hotels. the journalist is on the phone from the area. what is the situation at the moment? i believe you're where the attack happened. >> yes. i'm at the hotel that was attacked during the day. the situation is under control now. most of the army, the police was walking away from the site.

so it is quite normalized by now. even the president was here. i'm hearing in the lounge there are a few tourists nearby heard the shootings going on for hours. it was eight hours of long gunfire going on from what you're saying it sounds like security services are now in control of the situation. >> yes chl. that definitely is the situation there have been troubled times in the past, but things have been better recently, so do you think people are shocked this has happened?

>> it's hard to say. they have great endurance here, they have a great attitude to life. they have really many enjoyed party i partying -- they really enjoy life and they party as much as possible. i think people will try to retain this same attitude. there will be an increase in the security measures in the main tourist hot spots and other

are areas, but it will bring down the tourist count to the country n now thank you for that update. the refugees crisis has been a big issue in germany's region alexs. the polls have closed around they show the conservatives have lost in twro out of three votes. three states held votes. it was seen as a big test former kel's open door policy to refugees. dominic kane sent us this up

da date. >> reporter: here at the party headquarters there is satisfaction that the party has emerged as at largest party in the projection of the vote results of this state, but there is also consternation and concern about the rise about the right policy with its policy of opposing the refugees policies of angela merkel, the grand coalition between the christian democrats and the social democrats. they received 25% according to the projections. that would give them a very considerable number of seats in this parliament and will make it difficult for the other parties to form a coalition to govern in this state t it is also worth pointing out that the alternative for german party has

bon relatively well in other states that held elections on sunday-- done relatively well. the party appears to have gotten to double digits. certainly support in areas where they were not supported before air crash investigators have called for global rules requiring medical professionals to warn authorities if a pilot's mental health poses a risk for passengers. recommendations are included in a report in relation to the germanwings plane. which saw the co-pilot fly into a mountain. >> reporter: nobody could have

survived the impact. the plane disintegrated on impact. the debris square across 2 square kilometers. there is a me more ral to the victims here. the haunting question is whether the tragedy could have been avoided in the first place. the co co-pilot had had suicidal thought for years. his private dock force never informed aviation authorities or the airline of the danger he posed. issuing their final report into the wider issues of the cash on sunday the investigation team has urged global changes in regulation. >> translation: we recommend clearer rules that require health care providers to inform authorities when a specific patient's health is very likely to impact public safety. >> reporter: there are 11 recommendations in total, including a call for medical

checks to be made every three or six months instead of annually. pilots would depression would not necessarily be barred from flying, but should be more closely regulated and supported. there is no recommendation to change the security of cockpit doors. victims' relatives want the law changed. >> translation: it wasn't only an accident, it was a collapse where the safety advice did not work. it was proved that the pilot was ill and should never have sat in the cockpit. >> reporter: the families' lawyers remain determined to sue the company in the u.s. courts. >> translation: the company is withholding and refusing to negotiate with the american lawyers. more than 80 families got together and must litigate because the company is not cooperating. that is income prehencible.

-- income pre-hencible-- incomprensible ahead here, demands to get protesters out as yet another donald trump rally is interrupted. why world renowned festival culture in the u.s. is missing a beat with some long-term locals. g-term locals. clean has been swept away. >> "fukushima: a nuclear story," narrated by willem dafoe.

welcome back. a reminder of the top stories here on al jazeera. at least 28 people have been killed in an explosion in the

center of the turkish capital ankara. the president of the ivory coast says 14 civilians and 14 soldiers have been killed. french investigators have called for medical confidentiality to be relaxed for pilots following last year's germanwings air disaster. as the war in syria head towards its six year, the u.s. secretary of state hits out at the syrian government accused of disrupting talks to end the conflict. >> reporter: just hours before the syria talks were due to start in geneva, u.s. secretary of state john kerry was in paris meeting with some of his european counterparts. he told reporters the cessation of hostilities, now in place for over two weeks, had

significantly reduced violence, but one side was not fully complying. >> the syrian people strongly support the cessation of hostilities because it has made their lives better. to date the single biggest violator of that, by allegation, is the bashar al-assad regime. >> reporter: he also ht out at the syrian deputy prime minister who said there could be no negotiation about the role of preside president bashar al-assad. >> the comments made yesterday by the foreign minister clearly trying to disrupt, to send a message of deterrence to others. >> reporter: it was aimed at the members arriving for the talks >> we want to see an end to this

bloodshed in syria. we hope that we see a series partner. >> reporter: what is different about these talks is that the u.n. special envoy, staffan de mistura, says he is straightaway going to get to the substantive issues, who is going to be in a new transitional government taking syria towards new elections. that, of course, takes us to the key issue of president bashar al-assad and those around him and on that it seems right now no-one is prepared to compromise. james bays hundreds of refugees in a greece border camp have held a protest in the rain. the chanting the name of german chancellor angela merkel they demanded the border be opened to

them. the government is relocate them to better facilities within a week an update was sent to us. >> reporter: days of continuous rain is adding on to the misery of the refugees. most of them are living in flimsy tents surrounded by stagnant pools of water and some are falling sick. medical workers at the sample say they've treated 70 children for respiratory problems as well as digestive diseases. they have confirmed that a nine year old girl has confirmed to have hepatitis a, a very dangerous disease. they are looking to see how they can immunise others in the camp.

the government has been trying to urge the refugees to go out of this camp and into camps that are more hospitable. only a few have accepted at least 22 people have been killed in fighting between yemeni security forces and fighters affiliated with i.s.i.l. and al-qaeda. it happened in the port city of aden. fighting broke out on saturday night when the government forces tried to drive suspected fighters from parts of the city. security officials say air strikes were second stage to freeing the area. it was retaken by yemeni forces in july backed by the saudi coalition. armed groups still occupy some parts of it.

17 of the dead are suspected al-qaeda fighters. hundreds of thousands of people have taken to the streets of brazil to call for the res nation of the president-- regular ignore nation. did-- resignation. p our correspondent says many politicians are watching the demonstrations and actively considering their allegiances. >> reporter: hundreds of thousands of people are taking to the streets all across the country calling for the impeachment of their president. she and her ruling workers party are struggling to survive through numerous corruption allegations to do with the state-owned oil company. the largest crowds are gathering in the city that will be hosting the olympic games in august. people here are saying they're

tired of being lied to and they're particularly tired of this very deep economic recession that the country is in and they feel that the president and her leadership has not given any solutions to get out of it. also watching the demonstrators here very closely members of the ruling coalition who say this they could very well breakaway from her should the crowds here be as large as expected. some people putting it to reach one million. there are, however, still supporters of the president and the workers party and they are gathered a few kilometers outside here in front of the house of the former president. he himself, the mentor of the current president, but he has been charged with corrupt practices just last week at least 20 people have been killed and five other $missing after floods and mud slides caused devastation in parts of

brazil. a state of emergency has been declared after some residents were stranded when heavy rainfall occurred. protesters have interrupted the latest rally of donald trump, the republican front runner, in the u.s. presidential election. he was speaking in bloomington illinois and was to attend more areas on sunday despite growing tension at his events. he was supposed to call off an appearance inner chicago when brawls broke out between his supporters and protesters and in saturday in ohio a protest tried to climb on stage. this is what happened earlier >> >> get him out of here please. get him out. you can get him out. thank you. thank you.

get him out. >> reporter: speaking at a democratic fund raiser in dallas, obama criticized the candidates saying instead of fighting between themselves they should be doing more for the american people >> they should be focusing on how to make it better, not insults and schoolyard taunts and manufacturing facts, not divisiveness, certainly not violence against other americans or exclulding them. we're a better country than that one of the world's biggest technical and film festivals is taking place in austin this week. it is worth $1.6 billion to the economy every year.

as a result the city is growing rapidly. >> reporter: this man says god gave him a gift of music. over the decades he played with dozens of austin blues and jazz bands. >> you have people who are musicians all over the place. we used to sit on the corner every night and everybody would get together. you would have vocal groups and dancing all around town. that's how it started. >> reporter: a rich musical culture flourished in black neighborhoods like east austin and that music was a big part of the south by south west music festival when it launched 30 years ago. it grew into one of the world's hottest events. commercialised, corporate and expensive, all inclusive passes for music and films cost more than $1800 each.

the festival bolstered austin's cultivated image as an you will extra cool hypotheticalster haven. people flocked here to live - hipster haven. big new houses, coffee shops and yoe ga studios sprouted seemingly over night. property taxes soared and older residents can't afford to stay. people who have lived here say the changes happened so fast they hardly recognise the place. lisa bird works on cultural preservation. >> we say what has happened in this community is actually cultural genocide. as you go through this neighborhood now, what you will see remnants are very few and they will be the churches and a couple of barber shops.

other than that everything is gone >> reporter: this is a place where african american men socialise. >> now you see a new ethnicity come in and new houses coming up. it has changed dramatically. >> reporter: ronnie jackson has been working for 16 years >> the taxes pushed out people who have been here for years and years. i don't really think that that's right. >> reporter: thompson played at south by south-west in its early years, but now the festival is doom natured by acts from places like london, brooklyn and l.a. >> i've played with the best that came out of austin. i don't know any of them that actually benefited from the south by south west. >> reporter: south by south west boosted austin's image as a capital cool, but it helped to displace the very people whose god-given talents made it

possible to begin with. rob reynolds you can find out much more on our website. it is there at aljazeera.com. plenty of analysis and video on demand right there. on target tonight robots in the workplace, cyber war between nations and designer babies. our digital future and how it will change the way we live. get ready because the future is coming. how many times have you heard that? now you hear a lot about a so-called fourth industrial revolution. that's already upon us, by the way. this revolution was undo the global industrial economy, which has underpinned the advances made by human society for more than 200 years. replacing the old modell