warning against complacency. world leaders agree to tighten security at all nuclear sites. welcome to al jazeera live from our headquarters in doha. also coming up, calls for south africa's president to step down despite his apology for using public funds to renovate his home. demanding relief, farmers in the philippines take to the streets calling for the government to help them. a japanese electronic giant has

a foreign owner for the first time. find out about the multi billion dollar takeover of sharp. world leaders have ratified a treaty to keep nuclear material safely under lock and key. during a nuclear security summit in washington dc 102 made the pledge top prevent nuclear terrorism. president obama warned world leaders of the threat posed by armed groups like i.s.i.l. trying to gain access to nuclear weapons. our state department correspondent reports. >> reporter: all smiles at the end of the nuclear security summit in washington and for good reason. an international treaty that requires countries to do more to safeguard nuclear material is about to take effect. president obama wanders his

fellow leaders more must be done. >> there is no doubt that if these madmen ever got their hands on a nuclear bomb or nuclear material, they most certainly will use it to kill as many innocent people as possible. >> reporter: obama's warning comes just weeks after the i.s.i.l. attacks in brussels and a mid reports the suspects might have been spying on a nuclear scientist. some anti nuclear activists say the u.s. may have focused this summit on the wrong threat. they want more cuts in the number of nuclear weapons in the u.s. and russia. they don't want north korea to become a nuclear state. that's a matter obama discussed with his chinese, japanese and south korean counterparts on thursday. some analysts say the administration has tried not to choose between nuclear security and nonproliferation. >> civilian nuclear material is found in far more states than just those states with nuclear weapons. about 24 countries have material

that could be used for nuclear weapons. what president obama did was really elevate political attention to these materials and provide political momentum for securing them and ideally eliminating these materials. >> reporter: this is the final smument of its kind, so what happens now? -- summit >> informed we agree to maintain a strong architecture including through the united nations, the international atomic energy and interpol to carry on this work. >> reporter: the real will be whether engine nations continue their work on safeguarding their nuclear material without a nudge from the white house an official from the nonproliferation studs and they say the real threat is from nuclear weapons >> it was not the focus of the summit. the summit has very specific role to look at the security of

materials, but i think we do have an obligation to look at the security of weapons and reducing them. we have the united states and russia reducing the numbers at the end of the cold war. we do have india and pakistan still engaged in a regional arms race building their arsenals, an even though the summit is a big accomplishment in itself and it definitely contributes to war and risks of nuclear materials getting into wrong hands, but we shouldn't be forgetting about the bigger picture and eliminating working on eliminating the nuclear weapons themselves the defense ministry says heavy fighting has broken out bren armenan and other forces. small mountainous controlled enclave is located between

armenia. it has been under the control of forces since the fall of the soviet union. the fighting over the past 24 hours is said to be the worst since a ceasefire agreement ended a three-year war in the 1990s. it has continuously demanded to return the territory, but european mediators haven't been able to find a peaceful resolution. south africa's president is facing a flood of calls to resign after he apologised for using public funds to renovate his private home. the ruling anc party says recalling him as president would tear it apart. >> reporter: the country's highest court delivered the final damning word on the president and the national assembly, both breached the constitution.

in relation to the up grades to his home. the president says the over spend should never have happened. >> the matter has caused a lot of frustration and confusion for which i apologise on my behalf and on behalf of government. >> reporter: but he defended his actions saying he had always intended to pay back the money. >> i respect the judgment and will abide by it. i have consistently stated that i would pay an amount towards the non-security upgrades. >> reporter: but he was dismissive of the demand he repay some of the money spent on

upgrading his rural home. the country's corruption watchdog investigated after costs bloondz. the public diabetes - ballooned. the public protector said he should repay a portion on non-security features, but he dismissed the findings and the congress issued several reports that exonerated him from any wrongdoing. at the start of the constitutional court hearing, the president did a u-turn acknowledging he did owe some money, but that's not enough for his biggest critics. the economic freedom fighters say they will force him from office. they're encouraging south africans to take to the streets. the opposition democratic alliance wants him to resign and they called his address to the nation contradictory and insulting, they may not have won his res ignore neighing but they have a lot of ammunition ahead of this year's local elections. the anc has wholeheartedly backed him and thanked him for

humbling himself with an apology. the activities underscore the dominance of the anc which has the vast majority of south africans. although the president and the party are under unprecedented pressure kenya is commemorating one of the worst attacks by al-shabab on its soil. it has been a year since they stormed a university killing more than 140 students. >> reporter: these students ran away or hid when dozens of their friends were shot and killed. mercy lay under her bed for more than 12 hours. it was a year ago when attackers from the somali armed group al-shabab stormed the dormitory. >> reporter: i'm at journalist. >> reporter: we spoke to her on

the phone from just outside the campus during the attack. >> reporter: now she told us the full harrowing story of how her friend carol was killed >> she was seven months pregnant. i guess it was labor pains. she started crying. that's when they realized there was somebody inside the room. so they went to the bathroom and then we heard it. >> reporter: more than 140 students were killed. the attackers came from this direction and they found many here. mercy was hiding inside throughout. there was only four police guarding the dormitory at the time. >> reporter: the university's former principal says it was an

obvious and vulnerable target. he showed us letters sent to the government in the months before at tack requesting more security-- attack. he says they were ignored. he said the attack was bad for a region that was already and already marginalised. >> it has led to more fear and more suspicion between us, so literally we are in a quagmire. >> reporter: the additional security finally came late last year. there are 25 armed police on the campus. security in the whole of the northern region has improved. in january the university reopened for part-time students. mostly from the town. university staff are hoping hundreds more will feel safe enough to come and start courses in september. mercy and her friends practice a song for a memorial ceremony.

they were transferred to another university in another part of the country. they say they never want to go back, but they say they will never forget what happened that day or the friends they lost. malcolm webb two people have died in the philippines at a roadblock protest by farmers demanding government help. thousands of demonstrators blocked the highway in the drought stricken province of the north area. they want financial help and food aid after months of dry conditions. dozens of people, including 23 police officers were injured. >> reporter: a standoff between testers mainly comprise-- supporters including mainly farmers and spare supporters. on friday we saw skirmishes

between the protesters and the police station as the police tried to move them away from the highway. two were confirmed dead over a dozen injured in local hospitals. early on saturday a search warrant was issued on the church authorities because the protesters, and the farmers, who are the large majority, about four and a half thousand, are situated in church compound. they want to make sure there were no firearms in the area and so with senior church figures and senior politicians from the local area, there was a search of the location. nothing has been found. both sides accuse the other of starting the firing on friday which led to those two deaths. at the moment the standoff continues. the protesters and the farmers saying they will not leave the premises until their demands are heard. their demands are to get relief aid that wasn't available to them when this drought

continues. it continues now in the area for many, many months. there was supposed to be aid given in january. nothing has been given. that is what they are protesting about. they want authorities to do something. this is causing great anxiety for the government in manilla in the lead-up to the germ election we've got-- general election we've got a lot more to come up on al jazeera. >> reporter: i'm in cambodia where the united nations said thousands of children in or fan ages are not, in fact, ar fons how badminton is making strides in cricket-obsessed india. india.

welcome back. the top stories. more than 100 nations have signed a treaty aimed at preventing groups like i.s.i.l. from obtaining nuclear material. south africa's president faces a flood of calls to resigned even though he has apologised for using public funds to renovate his house. one of the deadliest al-shabab's anniversary from nearly a year ago. the u.n. has released figures showing a sharp rise in the number of iraqis who were violently killed in the month of

march. it says more than 1100 died. that's almost double that of the previous month. half of those killed were civilians. the death coincide with an increase in the number of i.s.i.l. attacks. the figure doesn't include those killed by secondary effects like starvation or homelessness. the kurdistan workers party or the p.k.k. says it was behind a car bombing in the turkish south-eastern city. seven police officers died. at least 27 others were injured. our correspondent reports. >> reporter: the explosion shattered the calm of this residential neighborhood. a car packed with explosives detonated here. the damage is clear. this family, this shock, they survived the attack. >> translation: my parents were cooking in the kitchen. i was in the bathroom. my children were studying in the living room. all of a sudden with a powerful

explosion we felt the storm and saw something strong coming on to us. it was like an apocalypse. >> reporter: many onlookers stood in disbelief. many more scared. >> translation: we heard the explosion. we thought it was an earthquake. we were worried and scared. >> reporter: the car was parked mere and it detonated about by remote control when the minibus arrived at this corner. the explosion was so powerful it shock the windows of the surrounding buildings. security officials say they have identified the man in this cctv footage as the main suspect. turkey is increasingly being targeted. last month a suicide attack carried out by an i.s.i.l. suicide bomber killed several tourists in istanbul. both ankara and istanbul have seen a spike in attack since last year. the government says the country's security and economy

are the targets. several son sul eights-- sons lates have closed its missions and warned its citizens against visiting the country. the thursday car bomb attack will only increase fears of more attacks. vietnam's parliament has sworn in a top police man as the new president. he was the head of the internal security agency which has a controversial human rights record. his name was recommended by the ruling communist party. it is the second most powerful position, the heeding communist being the top leader. foxconn has finalised its take over the sharp firm. the deal was sealed with a

handshake. the company paid 3.5 billion dollars to acquire a two third stake in sharp. an official says the introduction of a foreign management style in japan could be a positive step. >> i think what happened was that sharp wasn't really concealing it, but they were rather delayed in informing some of the negatives that were under the carpet. of course, on the negotiation stage it showed signs of backing off which drew a good deal not only from sharp itself but from the banks. what we don't have in japan a management style. they are basically the icon, but unfortunately if you look at electronics, the domestic sales or domestic production in japan

of electronics have more than halved than that of 15 years ago. obviously, there should have been a lot more forward introduction that we should be witnessing as we speak. i would assume that what they can do and also other companies is unify the technology of existing japanese companies and utilise their distribution base to markets all over the world. a good example of that is the nissan take over which was virtually a bankrupt company. you can utilise the existing name, existing technology and use your distribution base to widen your product base by using these japanese companies that they bought off the u.n. security council has agreed to send a police force to burundi. options for the deployment will be presented within 15 days. the country has experienced unrest since april last year when the president decided to

seek a third term. nearly 500 people have been killed and more than a quarter of a million people have fled to neighboring countries. the u.s. center for disease control is warning of further outbreaks of the zika virus. it says rising temperatures allowing mosquitos to thrive could allow the virus to spread across the u.s. zika is already spreading fast in south america. protection kits are being given to pregnant women. >> reporter: reducing the risk to pregnant women is crucial to protect future generations. the enthusiasm that we see for this response indicates the urgency with which zika is appropriately scene. there are many-- seen. there are many things at this summit that will be decided, determined and moved forward in terms of state localities doing more, but at the end it's really important that we have the resources that we need to

respond effectively meanwhile the world health organisation says there's now scientific consensus that zika is connected with microcephaly. that's a condition in which babies are born with birth defects. our correspondent reports. >> reporter: for months it has been the one question without an answer. is the zika virus responsible for microcephaly in babies. scientists say they have an answer. >> we're very close to being 100% sure and i think at this point all of our policies, our funding allocations are based on the idea that this is a true link. >> reporter: ever since brazil reported a startling increase in cases last autumn, scientists have been working for months to confirm a link between zika and microcephaly. during a health minister summit during last february the pressing question was whether enough proof existed to confirm the link. >> translation: we have 20,000

cases of zika in colombia. that number can vary, but we still don't have cases of microcephaly with an important amount of registered cases. we need to work more to find out why brazil has so many cases and we don't. >> reporter: zika infection during pregnancy appears to increase the risk for several types of birth defects and miscarriages. in fact, scientists say they have found the virus in the brains of affected babies. >> the most urgent imperative is to reduce the risk to pregnant women and their developing foetus and that is the over arching frame by which we make our plans, we make our actions, we focus our research, we focus our activities and we keep ourselves ahead of it. >> reporter: what still remains unknown is exactly what the chances are that a baby will suffer from a birth defect if born to a zika-affected mother

to cambodia now where almost 12,000 children live in or feign acknowledges-- orphanages. more than 70% of them have at least one living parent. now there's a new drive to reunite these children with their families. in the second of our two part series on orphans, our correspondent reports from siem reap >> reporter: it is the night before exams and this boy is studying hard. homework, he says, is a privilege. he didn't start school until he was 12 after coming to this orphana orphanage. he isn't an orphan and neither are many of the children here. >> translation: my parents sent me to this center seven years ago because they had problems earning a living. they couldn't send me to school and we didn't have food. >> reporter: a recent study by the government found that almost 12,000 children currently live

in orphanages in cambodia but three out of four of them have a living parents. concerned about cases of abuse and neglect in some orphanages, the government and u.n. are pushing to return these children to their families >> some of the institutions are not actually carefully not monitored, they're not respecting minimum standard of care, and what is very important is also that there are mechanism in place to inspect those institutions regularly. >> reporter: but his parents say he is better off where he is. they say they can't afford to look after him. they earn less than $5 a day selling balloons on the street. >> translation: if he stays with us he will have to work hard. my son will end up as a construction worker. >> reporter: staff at the together for cambodian orphanage say he has a chance for a better future if he stays with them.

>> translation: we accept children who are at risk of abuse and violence. in this situation, if we send them back, i don't agreement with that. >> reporter:-- i don't agree with that. >> reporter: both the u.n. and/or fannages say that the welfare of these children should come first, but the question is who can offer better care >> reporter: the government mass to regulate that children with parents must return home. organizations like together for cambodia are hoping it doesn't come to that top badminton players from around the world are battling it out in new delhi in the india open. one of the semifinalists is home grown talent, and olympic bronze medallist in london and a medal contender in this year's olympics in rio.

getting national support is a bit of a challenge in this cricket-crazy nation. >> reporter: for many here badminton is just fun. only a few like 12-year-old hope to make it a career. she started training two years ago, but one day she wants to do even better than her role model. >> i want to be a badminton player because when i'm eight years old i make a decision that i want to take the gold medal in the events. >> reporter: this is her inspiration practising at the indian open. when she won a bronze at the london games she became the first ever indian badminton player to win a medal. all the world's top players are here. it's one of the last qualifying tournament before the olympics, but tickets are being given out for free. >> as we have more and more

performers, more and more performances and champions be produced, the popularity will definitely going up >> reporter: capturing the public's interest has been tough. even though indian players are performing better than ever. this is the second most played sport in the country. it lacks behind it television viewership and sponsorship which means it doesn't get the investment or attention it needs to compete with the likes of cricket, football or even tennis. world double azs-- doubles champion says there's little backing >> the problem is that the support comes in after you become a champion, but the support doesn't come at the initial stages of becoming a champion. >> reporter: she trains most twice a day and her parents are

footing the bill. they hope that it will pay off at the games professional status improves and that she too can one day become a household name don't forget you can always go to the al jazeera website to keep right up-to-date with all the day's important stories. aljazeera.com >> i'm russell beard in the sea of cortez mexico to explore the future of fish farming >> and i'm gelerah darabi in kapama park south africa where a specialist team of conservationists are fighting