belgium's federal prosecutor confirms that two brothers were the brussels suicide bombers. a manhunt is underway for the third suspect. ♪ i'm jane dutton, you are watching al jazeera. our coverage today is dominated by events in belgium. brussels stood silent to remember the 31 victims of tuesday's attacks. the u.n. refugee agency pulls its staff out of greece.

camps on the greek island saying they have turned into detention centers. and surprise endorsement for ted cruz as more republicans get behind the anyone but trump movement. ♪ massive manhunt is underway to catch a suspected isil bomber seen on a security camera at a brussels airport. belgian's prosecutors confirmed the debitty of two brothers involved in the attack. but contradictory reports that the third suspect has been arrested. in central brussels people have been gathering to pay tribute to those 31 victims of tuesday east bombings. three days of national mourning have begun. dominic kane has this report. >> reporter: these are the men

police believe carried out tuesday's attacks. in the center is a known criminal who carried out the suicide bombing at brussels airport. in a news conference on wednesday lunchtime, prosecutors described what evidence they had gathered. >> translator: the third suspect is still on the run. after the authorities came in, they found the explosiving he was carrying. there was a taxi driver who told the police that he carried passengers who he thought had the explosives. >> reporter: at midday a minute of silence was observed. wednesday's front pages reflect the emotions of many people. some headlines speak of the horror of the bombings, others of the day that all had feared. some parts of the transport system have now reopened with heavy security presence.

at this metro station, passengers spoke of their concerns. >> it would be very important that everybody sticks together. that we cannot -- there is no solution without sticking together. >> translator: it was indeed a very strange day with all that happened yesterday, and i think everybody is feeling the same now, but, you know, we do what we can do, and we'll get there in the end. >> reporter: on a normal weekday this airport would handle more than 650 flights. but today there are none. the security forces have sealed off the entire complex, and the traffic is severely delayed. part of a pattern across the city which has seen continued road closures and diversions. the people appear to be accepting this imposition stoically, but many are afraid that this high-tension and threat to their city is becoming the norm. dominic kane, al jazeera,

brussels. in brussels, the french prime minister is talking now. and he heard from him about an hour ago. he was alongside the belgian prime minister and the two of them were saying they were going to work together even closer in the investigation, making sure something like this will never happen again. let's bring in jacky rowland live for us in brussels. they were talking about this never happening again, jacky, but it did. massive manhunt underway and a man still on the loose. tell us about that. >> reporter: yes, in particular police are urgently looking for the man. he was already being actively looked for in connection to the paris suspect abdeslam who was arrested a few days ago. he was believed to have played a role in the paris attacks and he

is now being actively searched in connection with the brussels bombing on tuesday. now you have seen that image from the cctv image released from the airport, and we know that the third person in the image, the man wearing the hat and white jacket. he escaped. he is being searched for. it hasn't been said if this is an image of the suspect, because investigators are keen to contact to him because he is expected to be an explosives expert. it is expected that he may have made the explosive belt used in the attacks on tuesday, but also in the paris attacks of last november. bearing in mind that police on tuesday discovered an apartment in brussels, a nail bomb and chemicals. clearly there are concerns that this man has the capacity to make more bombs and could pose a

very serious threat to people, not only in brussels but also elsewhere in europe. >> and are you seeing that playing out on the streets where you are jacky, where people have been turning up to mourn the victims? >> reporter: yes, there has throughout the day been a steady flow of people coming to particular points in the city which have become focal points for people who want to reflect on what happened on tuesday, who may want to light a candle, lay a flower or just stand and think about those who died. and 260 are still in hospital coping in some cases with very horrendous injuries. it's worth pointing out as well that the security presence on the street has physically been reinforced in the last few hours. we're seeing extremely heavily armored police and we're also seeing military troops in

fatigues, wearing helmets and body armor, clearly this is a very visual sign to people, i think it's designed primarily to provide reassurance to people who are still very shaken up about what happened in the center of the city and at the airport on tuesday. >> all right. let's leave it there. thank you, jacky. other news now, the current round of talks to find a solution to the war in syria has wrapped up in geneva. political solution has been put to the side while syria's government studies a paper presented at the talks, but there is a glimmer of hope. james bayes has this update for us from geneva. >> reporter: the talks here in geneva were supposed to continue on thursday with a meeting between the u.n. mediator, staffan de mistura, and the government and opposition side. but now the government's chief

negotiator says he has received the latest paper putting forward his key principles on this process, and he says he wants to take those back to damascus. it was pretty clear when the ambassador spoke to us that for now he's walking away from geneva, but he says he is not walking away from this process. >> translator: today he received the paper from mr. de mistura. this paper shall be carefully studied and we shall respond at the begin of the next round. as the second round started with us submitting a paper, this round is practically ending with our receiving a paper from the special envoy. >> reporter: so very little progress trying to create a new interim government for syria. remember, though, as well, there hooz been a cessation of

hostilities for more than three weeks now, and a new effort to get supplies into besieged areas, to get in humanitarian aid. the man leading that effort told me there had been some progress. >> i live in the real world. i have been through this war now for five years as have all of us. 2014, 2015 was just bad news every single day. so at least there is a glimmer of hope now. yes, we're making progress. and we hope and pray political talks will lead to something. because there is only political solutions in this. there are no humanitarian solutions. >> reporter: the position of the main opposition block is that the government side has tried to stall in these negotiations and avoid the main issue of political transition, and that's why in the coming hours, the meeting between the russians, vladimir putin, and his foreign minister sergei lavrov, and the

u.s. secretary of state, john kerry who is starting a trip to moscow will be so important. hundreds of syrian refugees are still arriving in greece every day. the u.n. refugee agency says the refugee camps have become detention centers and is no longer prepared to work there. >> reporter: for weary refugees arriving in greece, the blue tabs of the united nations have been a welcome sight. staff have been guiding people to the camps, which have become known as hot spots. not anymore. >> under the new provisions, these so-called hot spots have now become detention facilities, so with line with our policy, we have suspended some of our activities at all of these closed centers on the island. >> reporter: they say the deal when the e.u. and turkey which is meant to stop the flow of refugees through europe is being

prematurely implemented and without proper safeguards. the new arrivals are meant to be able to apply for asylum, but it also means people are confined to the camps until their claims are assessed, the refugees agency says people are being held against their will. >> they have fled horrible circumstances, and here they are having to stay in a closed environment, including children and elderly and pregnant women, and they need to not feel punished. >> reporter: they will continue some services including counseling for refugees traumatized by their journey. >> we have a mandate to protect refugees. it does haven't a mandate to detain them. so it is not going to be involved in processing, facilitating, mass deportations. it's there to protect them and to see that they get proper information, and they will

continue to do those things. >> reporter: greece has begun sending thousands back to turkey, but more still come, only now when they land, the blue tabards of the u.n. won't be there to greet them snfrmths still to come, u.s. president barack obama arrives in argentina after his visit to cuba. and a hopeful discovery for kenya struggling with severe drought. ♪ ((úz@úxóxkxñ($9

♪ hello again, the top stories

on al jazeera. massive manhunt somebody underway to catch a suspected isil bomber scene on a security camera at brussels airport. belgium's federal prosecutor confirmed the identities of two brothers involved in the attacks. the statement contradicted earlier reports that a third suspect has been arrested. police are currently carrying out raids in the brussels neighborhood searching for evidence and if anyone else was involved in tuesday east attacks. and people have been gathering to pay tribute to the 31 victims. three days of national mourning have begun. some of the most dramatic and terrifying pictures of the brussels attacks were filmed by an eyewitness on the metro system. these images were taken between

two stations. passengers clamored out of the carriage in the dark on to the tracks, not knowing what was ahead. the man who filmed these images spoke to us a little while ago. >> i was on my way to work in the morning on the metro, and i was in between stations when i felt a small blast of air, not very harsh, but something maybe similar to wind coming in the window. thursday some thudding in the background, my ears pops, and then the metro came to a halt. an announcement came over the speakers saying there was a disruption on the line and they were going to try to resolve it as quickly as possible. after a few minutes someone came towards the back either the driver or other metro security. they opened the back door, installed a ladder, and started to evacuate us down on to the

tracks, and walking back towards where we had come from. >> yes, i was going to comment on how everyone looks relatively calm in the pictures. everybody is walking slowly, the fact that you were able to take this footage, what was going through your mind and that of the others? >> well, we were only a few hundred meters away from the explosion, but at the time it felt like something had gone wrong, surely. but we didn't know what. it wasn't clear that it was something so close and so dangerous. and so it took some time for that to register as we were first exiting the metro. it was obvious there was some smoke in the tunnel that something was going on. but it took more time to realize how close we really were to the explosion itself. >> how has this left you feeling? >> feeling a little bit -- at

the time, feeling a little bit nervous, of course a little bit shocked, and now i think we're all focused on trying to get -- move forward with our lives as best as we can. trying to pay attention to the announcements from the authorities on what is going on, and what are the safest things to be doing, and hopefully looking forward to a time that is going to be safer and where things go back to normal here in the city. to other news, in a surprise announcement, the former florida governor jeb bush has backed ted cruz for president. bush also urged republicans, as he put it, over the come any divisiveness and vulgarity that donald trump has brought into politics. rosiland jordan has the latest. >> reporter: well it is certainly raising the spector that the effort to try to stop donald trump are moving into high gear, and some news reports

here in the united states are suggesting that bush may have been moving in this direction even before he dropped out of the campaign to try to become the republican nominee earlier this month. now it's also worth pointing out that not only is jeb bush giving his support to ted cruz, but one of his brothers has always joined the finance operation to help ted cruz raise money. cruz for his part is welcoming the endorse , saying it is important to try to put together a campaign in order to defeat whom he believes will be the eventual democratic nominee, hillary clinton. now we haven't heard any official response from donald trump about this, but it is worth pointing out that trump did win in arizona on tuesday while cruz beat him in the caucuses in the neighboring state of utah, so it's a very hard fought fight even though

trump is still in the running. barack obama has arrived in argentina. the two-day trip is expected to reset diplomatic strength, and strengthen relations, but some ar -- an again tinnians are feeling uneasy. >> reporter: argentina is one of the world's leading lemon exporters, but shipping them to the united states has been illegal for years. there is a chance barack obama's visit may help his industry export to the united states once again. >> translator: we're hoping for an announcement on lemon exports. it has been a closed market for us, but we're hearing that imports could be opened again. >> reporter: there are dozens of companies like this one that are hoping to benefit from a better relationship with the

united states. many here see this as a sign of support, and a way of helping this country turn the page to the financial isolation it has seen during the last 12 years. argentina has been an outcast of the international financial community since the economic crisis in 2001 when argentina defaulted on its sovereign debt. then during the center-left government, argentina was closer to china and venezuela than the united states. trade and currency restrictions stirred many potential investors away. the recently elected government is focusing on opening argentina for business once again. >> translator: we are not looking for one economic partner, but many economic partners who want to work with the world. the u.s. is a world power, and of course it will play a key role. >> reporter: argentina has historically been considered

anti-american. the last time a u.s. president visited was in 2005 when george bush attended the summit of the americas. thousands protested his presence then. now many are opposing obama's visit, because it coincides with the 40th anniversary of the coup which many say brought a brutal dictatorship to power. >> many here don't support the u.s. because it supported the dictatorship that killed thousands of opponents. >> reporter: obama's visit opens a new chapter between argentina and the united states. and many are hoping to see the benefits soon. now to the war in yemen where houthi fighters have retaken control of the western part of the city of ta'izz. our correspondent has the latest. >> reporter: pro-government

fighters are sending reinforcements to the city of ta'izz. houthi forces have once again taken the western route into the city. it is just over a week now since government forces fought their way into the area. in that broke the long siege of yemen's third-largest city. but houthi rebels lingered on the out skirts and now they reappeared. this is seen as a setback for yemeni government forces who just a few days ago were confident of taking more areas. >> translator: god willing we'll control the mountains soon to surround houthi rebels. god willing with the effort of pro-government fighters we will free ta'izz. >> reporter: pro-government forces control many parts of ta'izz, but it's clear no one can claim to control the whole city. some believe that talk of the liberation earlier this month was premature. >> the fighting hasn't stopped

in the last two weeks. it wasn't like the houthis have been defeated in these areas, but rather they withdrew to certain lines, and now they are attacking again to reestablish the blockade. >> reporter: the government finds itself confronting al-qaeda in the arabian peninsula in the south and the security vacuum is favoring the al-qaeda fighters. >> all of the areas, when the fighting subsides, you will find [ inaudible ] taking over these areas. this happens along the entire coastline. >> reporter: in this province u.s. forces have been caring out air strikes against the aqap. medical sources say many of the injured were brought to the nearest hospital, but no central government in charge of the country, most of the people are

at the mercy of multiple armed groups. in the republic of congo, the government has extended a communications blackout imposed during sunday's presidential election. haru mutasa sent this update. >> reporter: opposition supporters are not happy with the result. they say they can't believe how it is possible that the president is leading in the polls. and they are gathering out here where they plan to have a big meeting. this is all of them. they say they didn't [ inaudible ] the election, because they wanted to have their mark. some are waiting up there on the road despite the fact that the police may come and disperse them. the general tone of everyone is that they are angry, and opposition leaders say they want change. >> it is difficult for me. and [ inaudible ] the president [ inaudible ] killer, very, very

killer. >> reporter: you really get the feeling that people are in limbo, especially in the capitol, many shops haven't opened and businesses remain closed because people are waiting to see what happens next. the african union said that sunday's presidential election was calm and peaceful. the united states says that there were irregularities in the vote, and they fear that these polls would not be credible. the police have been deployed. some are there across the road. they have been there for a couple of days now. the opposition seem afraid to come out on to the streets in huge numbers. they say they are waiting for the go-ahead from their leaders. this is an important election for many across africa. it is yet another example of another leader trying to extend his turn in power. how african leaders deal with it, and more importantly how people who aren't happy with the results deal with this could

determine which way this goes. the struggle to find drinking water in kenya, huge underground reservoirs were thought to be the answer, but so far they have delivered little as catherine soi reports. >> reporter: for the first time in a year it has rained here in northern kenya. for a while people will not have to walk long distances looking for water. but the rain is fleeting and can mislead. it only rained for two days this time. this is known as one of the driest and pourest regions in the country, but it is also full of natural resources. this is one of four water aquifers discovered three years ago. it is not far from the capitol. the local government wants to use the water for irrigation. >> translator: this has changed my family's life. we now have water. we are farming.

i can take care of my family. >> reporter: but that's about it. if you move farther away from the town, you come face-to-face with the struggles of those who live in the most remote areas. the largest aquifer was discovered here on the border with south sudan. tests done on the water however, found it's too salty to drink. there was so much excitement when this aquifer was discovered. when we visited in 2013 they told us their water problems were finally over. now people are just frustrated. when we last spoke to sarah and her friends at a nearby village more than two years ago, they were so full of hope, but nothing much has changed for them. they tell us they still spending most of their days looking for water from dry riverbeds like this one.

>> translator: i just want the government to do something. when it doesn't rain, this water bed completely dries up. and even if there's water, it's 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 look for a solution on what to do with that water. [ inaudible ] and the rain water, so that at least there is an alternative assurance for a couple of months for -- for -- 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 are cautiously holding on to hope that one day soon it will be easier to access clean safer water for their families.

catherine soi, al jazeera, northern kenya. just want to remind you of your website, which is constantly updated with stories, blogs, comments from our correspondents. everything that is going on around the world. the address aljazeera.com. ♪ new details in the brussels attacks. a manhunt underway right now for a third suspect in the case as we learn that one of the suicide bombers left a will, saying he felt unsafe. europe in mourning for the 31 people killed. at least nine americans were among those hurt. we're hearing from their families this morning. and primary results in the west. the front runners won big in arizona, but