two brothers are named as the suicide bombers at brussels airport. a massive manhunt is underway for a third man seen on security cameras. you're watching al jazeera. our coverage today again dominated by events in belgium. vigils are being held in the belgium capital as the nation mourns the 34 victims of the attacks. in other news, the u.n. refugee agency pulls its staff from

greece saying that they've turned them into detention centers. the latest primary results two brothers have been named by belgium tv as the suicide bombers who attacked brussels airport. police have launched a series of raids in a massive manhunt to catch a third man seen here on the right of those two brothers. this is the scene this morning in the belgium capital where 34 people were killed in coordinated attacks on tuesday. three days of national mourning have begun after what the belgium prime minister described as a day of tragedy. going to our correspondent dominic kane at the airport where two of those explosions

went off. we've seen cctv of the bombers. what more do we know about them? >> reporter: we know that the brothers you referred to, the two who blew themselves up at the airport here yesterday and that they have criminal records. they were known to the authorities and had been for some time. the name of the third suspect, the person who was wearing the hat in the cctv footage with the blue-white shirt, he has been named by belgium media and he also had been wanted by the authorities prior to yesterday's events. so clearly much attention focusing on the media on the names of these three people and we can be certain that very much attention, indeed, as you say, was focusing insofar as the authorities are concerned, in trying to apprehend this third character. we can be sure that there is a

massive operation underway. >> reporter: a manhunt in belgium. police launch raids to find the attackers who carried out tuesday's back to back bombings. in brussels and across the country, security is tight. the country's federal prosecutor has now confirmed that this is the image of three suspects behind the blasts at the airport. two of them were apparently suicide bombers. the third on the far right remains at large. in the immediate aftermath of the attack, an haze of confusion and chaos. the twin explosions tore through the check-in area of the airport. people dashed to escape the danger inside. >> translation: people were dying one after the other. we were trying to keep them alive but the worst were people

with throat injuries >> i'm so scared. i feel like it's the end of the world. i heard an explosion and all the ceilings are going down and i go under the sink. the second explosion went and everything is black. >> reporter: about 40 minutes later another russian hour blast ripped through a subway car in central brussels. passengers abandoned the carriage escaping as quickly as they could. the metro station is close to the european parliament complex, the heart of e.u. leadership. emergency crews treed victims on the pavement as the army kept guard. triggered by concerns of further attacks, the public transport system was shut down. a city-wide lock-down ordered. belgium has raised its terror alert to its highest level. >> it is difficult to take a

train, but you must have the courage to take it because if you don't take a normal life, you give the terrorists a chance to win the game and we can't do that. >> reporter: i.s.i.l. has admitted if carried out the attacks. security officials had warned of a possible follow-up strike to the paris killings four months ago. the bombings in brussels now confirm those fears dominic, 24 hours after those attacks, what is the response that we're seeing there? >> reporter: certainly there's a sense amongst the people in brussels that their city is perhaps not under siege but having to come to terms with the reality of frequent violent events happening here. the police investigations that are ongoing. the searches that happen across

the city. insofar as what the media are suggesting, in this the french newspaper you have the headline war in the center of brussels and this picture from the metro carriage that was blown apart from the explosion. you also see the three suspects, the two, the brothers here shown, described as the suicide bombers, and this one, suspect sought after. then in the dutch language newspaper, you have under here, the day that everybody feared. that conjures up the image, perhaps, that many people in brussels and in belgium now have that their country has turned from one part of peaceful country or certainly this city where such events can happen. insofar as the other developments this morning, we know that the federal cabinet has been meeting this morning and we expect that there may be

a news conference in about an hour's time to update us on what more developments there have been that the government feels able to share with the media, with the world about how the investigation is progressing dominic, we will watch out for that news conference. thank you for that as belgium comes to terms with the event in the past 24 hours, many people are asking why the bombers chose to target brussels. jacky rowland reports. >> reporter: it is the end of a traumatic day. people take a moment to honor those who died and to think of those who are even now fighting for their lives. there are so many questions. how could this happen? and why did the attackers choose brussels? >> being a city that is close to me that i love. i'm not from here, but i've been living here for quite a while, it came as a shock and it was hard and honestly today has been

emotionally exhausting >> the metro station, it is really a place where you go every day to go to work. it's really a thing that you don't even think that something could happen there. >> reporter: to begin answering those questions you have to go back to last november. police quickly established a brussels connection to the paris attacks and raided homes in the molembeek district. they were looking for members of a cell that planned and coordinated events in paris. that search culminated dramatically in the capture last week of the prime suspect salah abdeslam. it had taken police more than four months to find him. he had slipped through their fingers on several previous occasions. it was in the building behind me that belgium police finally arrested him on friday night. security officials warned at the

time that in these networks, when one cell is closed down, others are often activated. that seems to be exactly what has happened. in percentage terms, belgium has seen more of its citizens travelling to syria than any other country in europe. these areas have been fertile ground for recruiters. for people without prospects or hope, the message is simple and seductive. >> they're here in groups of small dealers, drug dealers and so on, and they are approached by hate preachers, as we call them, who turn their mind, and this may happen in a very short time. >> reporter: the timing of these attacks, just days after the arrest of salah abdeslam cannot be a coincidence, but the bombings appear to be more than just an act of revenge.

after all, brussels hosts the e.u. and nato headquarters. this seems to be an attack on the heart of europe and all that it is meant to stand for. jacky rowland 24 hours after the last of those three attacks rocked brussels airport and metro, the city and nation now in mourning. this is a scene at the place where people have set up a memorial for at least 34 people killed. more than 200 injured. flowers, candles, world flags there, and messages of solidarity for the people of belgium u.s. republican front runner donald trump and democratic hopeful hillary clinton have won big victories in the u.s. primary elections in arizona. hillary clinton's rival bernie sanders took utah and idaho.

they all spoke about the attacks in brussels >> this is a contest between fundamentally different views of our country, our values and our future. now, what we saw happen today in brussels, the horrible terrorist attack, reminds us of how high the stakes are. we live in a complex and dangerous world and we need a commander in chief who could provide leadership that is strong, smart and, above all, steady in taking on these threats in yemen at least 40 people have been killed in a u.s. air strike on an al-qaeda training camp. the camp near al mukalla was coordinated with the saudi-led coalition which had been conducting a campaign against houthi rebels. it was described as a blow to al-qaeda and its ability to launch attacks.

the u.n. refugee agency has pulled its staff from camps on lesbos and other greek islands. it says the refugee camps there have become detention centers and is no longer prepared to work there. >> reporter: for refugees arriving in greece the u.n. figures have been a welcome sight. staff from the u.n. refugee agency have been guiding people to the camps which have become known as hot spots. not any more. >> under the new provisions, these so-called hot spolts have now become detention facilities, so accordingly and in line with u.n.h.c.r.'s policy on opposing mandatory detention, we have suspended some of our activities at all the closed center centers on the island >> reporter: necessity say the deal between e.u. and turkey, which was meant to stop the flow of refugees through europe, is being prematurely implemented and without proper safeguards.

meant no be able to apply for asylum. it means people are confined to the camps until their claims are assessed. people are being held against their will on simply greek islands it says, so they will no longer provide services on those camps. >> u.n.h.c.r. has a mandate to protect refugees. it doesn't have a mandate to detain them. it's not going to be involved in processing facilitating mass deportations. it is there to protect them and to see that they get proper information and they will continue to do those things. >> reporter: greece mass begun sending thousands of refugees back to turkey. but more still come. only now when they land the blue tabs of the u.n. won't be there to greet them plenty more still ahead here on al jazeera. we will take a look at nepal's

attempt to end child marriages within the next 15 years. a hopeful discovery for kenya as the country struggles through severe drought. drought.

you're watching al jazeera. here is a quick recap of our top stories. two brothers have been named by belgium tv as the suicide bombers who attacked brussels. a massive manhunt has been launched for a third man also named. 34 people were killed in

coordinated attacks at the airpt and a metro station. in yemen at least 40 people have been killed in u.s. air strike on al-qaeda trabing camp. was coordinated with the saudi- led coalition which has been conducting a campaign against houthi rebels. u.s. republican front runner donald trump and democratic hopeful hillary clinton have won big victories in the u.s. primary elections in arizona. bernie sanders took utah and idaho. events in belgium have been watched with concern around the world. although no credible threat is imminent in the u.s., security ere has been stepped up at airports and public places. allan fisher sent this report from washington dc >> reporter: across the country at train stations and airports, obvious increases in security. more officers, more dogs, more checks. the new yorke the national guard was called up to help out. there's no credible threat to the u.s. but no-one is taking

chances >> we're going to be redoubling our efforts today here in this state at our airports, terminals, train terminals, et cetera >> what the terrorists want is for us to change our ways. the terrorists want to undermine our democracy, they want to undermine our values, they want us to be panicked and we refuse to be afraid and change who we were >> reporter: tacks like those in belgium will become a growing issue in the presidential campaign. ted cruz said in a statement law enforcement should increase patrols in muslim areas in the u.s. >> in the wake of brussels, we don't need another lecture from president obama on islamaphobia. we need a commander in chief who does everything necessary to defeat the enemy and we need to immediately halt the president's ill-advised plan to bring in tens of thousands of syrian muslim refugees. >> reporter: u.s. authorities

have offered belgium every help and assistance and may be called in to help with elements of the investigation. belgium's ambassador to the u.s. said security around the airport had been tightened in recent days >> additional security had come and you can see that, every can see that. notwithstanding that, these attacks occurred this morning. >> reporter: this has been described as an attack on belgium and on europe, but its impact has been felt worldwide. in the u.s. flags will fly at half staff until the weekend as a mark of respect for those who died in brussels artists and cartoonists have been showing sald ought with the-- solidarity with the people of brussels. this was published which shows a weeping french flag kon forting his friend belgium.

belgium's most famous fictional tin tin is depicted here in the colors of the belgium flag. this is the statutes, a fame landmarks defiance, a statement of contempt towards those who use violence child marriage is a major issue in nepal with almost half the country's girls married before turning 18. >> reporter: this girl is 17 and is a mother of two. her husband is 18. when they were just 13 and 14 their parents came together and arranged their marriage. this village is normal for children to be married early.

>> translation: i knew i was getting married, but i didn't know what it meant she remembers. her hezbollah says i didn't know i was getting married. my parents got me married. >> reporter: four years later she is still angry-- he is still angry at his father. his father says he arranged the marriage in line with traditional ideas. >> translation: it is our culture. our society expects us to get our children married early >> reporter: they both had to quit school. he is now supporting his young family by working as a ticket collector on the rural bus service. >> what is at the bottom of it is traditional belief, culture practices an existing gener inequality. - diabetes gender inequality. that needs-- gender inequality. that needs to be tackled and the change can take place >> reporter: it has one of the worst rates of child marriages in the world. 41% of girls are married before

their 18th birthday, even though under the law the legal minimum age for marriage is 18. statistics suggest that four out of every five girls of this district get married before the age of 18. parents as well as the children seem to understand that it's illegal, but social pressures are so high that even activists who want to lodge complaints against these child marriages face the pressure themselves. >> reporter: this is a 14-year-old who married 25 year old. their marriage has given rise to the only court case brought this year in this district. her mother has taken her own parents to court after they arranged a marriage for their underage grand-daughter. she insists she is 18 and there are no documents to prove her age. >> translation: i'm married because i fell in love. my mother is a bad women she

says >> reporter: the human rights activists who filed in course have to tread carefully. even the police are hesitant to take action against neem. the rich get aware with impunity. only the poor and powerless get courts >> reporter: the country is hoping to ends child marriage by 2030. many girls are still getting married early, all in the name of honor and culture brazil's president dilma rousseff has accused protesters of trying to stage a coup. there have been massive demonstrations in recent days calling for her to resign or be impeached. there have been release of secret phone conversations between her and lula da silva. the former mayor of toronto has died at the age of 46. he had been battling an

aggressive form of cancer. he gained international recognition after a video emerged of him using crack kroik. the father of two served through a decade of is it counsellor before he was elected mayor into 2010. three years ago skwund groundwater reserves were discovered in one of kenya's hottest and driest reasons. the reservoirs had believed no have enough water to supply the whole country for the next 70 years. according to u.n. esco around 17 million kenyans lack access to clean water. the discovery brips hope to a region that is still recovering from severe drought. many people are still frustrated by the slow progress in getting the water to them. >> reporter: for the first time in a year it has rained here. for a while people will not have to walk long distances looking for water, but the rain is

fleeting and kon mislead. it only rained for two days this time. it is known as one of the driest and poorest regions of the country, but is has natural resources like oil and huge underground water res voice. this is one of four-- reservoirs. this is one discovered three years ago. the local government wants to use the water for irrigation and has sank bore holes. >> translation: this has changed my family's life. we now have water. we have farming. i can take care of my family. >> reporter: that's about it. moving further away from the town, you come face-to-face with the struggles of those who live in the most remote areas. the largest aquifer of about 240 cubic billion metres of water was discovered here. tests done on the underground water found it's too salty to

drink. there was so much excitement when this was discovered. some people even moved closer to the water source. when we visited in 2013 they told us that their water problems were finally over. now not many people will talk about it. they're just frustrated. when we last spoke to this woman and her friends at a nearby village more than two years ago, they were so full of hope. nothing much has changed for them. they tell us they still spend most of their days looking for water from dry river bredz like this one. >> translation: i just want the government to do something. when it doesn'ted rain, this waterbed drives up. if there's water, it is dirty. dogs drink it, then we drink it. that's why our children are falling sick. >> reporter: local officials say the underground water could be purified but the process would be too expensive >> we await to look for the solution of what to do with the

water. ours first is to capture the water. that ask running and the rainwater. so that at least there is an alternative assurance for a couple of months for the people and for the livestock. >> reporter: these women say they want more action and less rhetoric. they have been doing this for decades, but they're cautiously holding on to hope that one day soon it will be easier to access clean safer water for their families afghanistan cricketers are all but out of this year's world twenty 20 tournt-- tournament. the team has been playing for 15 years but has risen steadily in the rankings.

>> reporter: practice makes perfect in the afghan cricket team has been working hard to make it this far. their success ask catching attention. >> translation: everyone is appreciating our team. the players are giving their best efforts. they have done a lot of hard work to get here. >> reporter: several kilometers away, afghan expats are keeping an eye on their home team's performance. there are many here. although they're out of their country, what brings them together is the performance of their cricket team which began playing international matches in 2001. there is excite around the tv screens here with the focus is fixed on the game as well as the food. >> translation: i'm feeling so happy. a country that has gone through so much for our players to be in the world cup and play against

such teams, i'm really happy. >> reporter: it is a sense of pride the players here say they share. >> no-one is playing for them. you can see that we are giving a tough time to the other teams and we're playing all the 20 hours in every match. >> reporter: the team may be all but out of this tournt-- session, but their role is to travel from ninth to fifth and making the sport a similar pride for afghans everywhere a rocket is blasting its way towards the international space station. >> lift off of the five rocket with a supplies. >> reporter: it will be carrying much needed food and equipment to the space station. a series of mishappens made n.a.s.a. to outsource this task

to private companies. there has been images of a shock wave of an exploding star. it was being tracked which is 500 times the size of our son. the in addition shock way is seen as the core of the star collapses. >> this is "techknow". a show about innovations that can change lives. >> the science of fighting a wildfire. >> we're going to explore the intersection of hardware and humanity, but we're doing it in a unique way. this is a show about science... >> oh! >> oh my god! >> by scientists. >> tonight, techknow investigates vaping. >> whoever bought this got way more than they bargained for. >> yes they did. >> it's everywhere... in clubs, street corners and .