and we show you like no-one else can. this is our american story. this is america tonight. [ explosion ] aleppo assault. >> we are pretty confident in our safety that this was russia that carried out the strikes. >> reporter: russia deies allegations of -- denies allegations of war crimes after a video released showing them dropping bombs in syria. >> dangerous ground. pope francis visits a mexican state rive with drug -- rife with drug trafficking and gang

violence. >> freezing production. >> we don't want significant gyrations in prices. >> four of the biggest energy giants reach an agreement to put the brakes on plunging oil crisis. one country could ruin the deal and launch into orbit. how an advanced observes satellite will track everything from mass migration to climate change. >> good evening, i'm antonio mora. this is al jazeera america's international newshour. tonight we begin with new developments in the syrian civil war. russia is denying accusations that it committed a war crime after air strikes on hospitals and schools killed 50 people. footage released by activists show who appears to be banned

cluster bombs dropped from russian jets striking rebel controlled areas. turkey and saudi arabia are among the nations calling for ground troops in syria, as the russian-backed forces advantages to the border. washington has said no to that request. meanwhile the syrian government has given the u.n. the approval to send aid to the country. jamie mcintyre reports from the pentagon on the impact of russia's aerial offensive. the latest video posted on social media shows the army's advance on aleppo, once a rebel stronghold and syria's largest city, before five years of fighting drove much of the population away. overhead a russian jet appears to drop cluster bombs, and unguided munition condemned by the u.s. for urban conduct, because it can cause wide-spread

indiscriminate casualties. the u.s. accuses russia of bombing a doctors without borders hospital in northern syria, reducing it to a pile of rubble. killing several doctors and patients. no coalition or u.s. planes were operating in the area at the time. >> while the u.s. stopped short of labelling the strike a war crime. the attack was called horrific. >> we are confident in the safety that russia carried out the strikes. >> should aleppo fall days before the fighting is instituted. it would end hopes of overthrowing bashar al-assad, and fuel the criticism that the agreement negotiated by secretary of state john kerry in munich played right into the hands of russian president vladimir putin. >> we have seen this movie before in ukraine. russia presses its advantage militarily, creates facts on the ground.

uses a denial and deliver of humanitarian aid as a bar anning chip, negotiating agreement to lock in the new south wales of war, and chooses went to resume fighting. this is diplomacy in the service of military aggression. >> president obama disputes the idea that he has been outfoxed by russian president vladimir putin, arguing vladimir putin blundered into a costly quagmire, and over time will train resources while backing an ally with little strategic value. >> what is it that rusha thinks it gains if it gets a country that has been completely destroyed as an ally. that it has to perpetually spend billions to prop up. that's not that great a price. >> the pentagon insists the agreement does not affect the war against i.s.i.l., and that

u.s. forces will play no role in delivering aid or protecting convoys from the attacks. >> we have not been asked to provide that role at this point. and we do think that there is a need for the aid to make it to the people that are needed. that is what this hostility will test. >> when you say we are not involved in plans for action, do you think the people in syria will think why on earth not? >> it's not something that we have been asked to do at this point. >> in an address carried by the state-run newsagency. president bashar al-assad sounded as defiant as ever, and seemed to cast doubt on a ceasefire, saying if it happened, it doesn't mean that each party will stop using weapons. joining us now is robert forth, former u.s. ambassador to syria, he's a senior fellow joining us from new haven

effect. happy to have you with us. was the announcement last week much ado about nothing, given the intransigent position of most parties. it's not likely to take effect. if it does, it will be rife with violations. >> the two sides are very far from any kind of compromise, political deal. >> senator kain argues this is ukraine over again. the russians postponed ceasefires, intensified bombings, and violate the ceasefire, repeating the process. does he have a point. >> i can't say the russians violated what was agreed upon in munich, it was not supposed to begin until the end of this week anyway. what is clear, however, is that the russians have said publicly that they will continue to bomb the rebels in aleppo. and they said publicly that they

are all terrorists, and, therefore, there's no prospect of any kind of cessation of hostilities in and around aleppo, which is the main theatre of fighting at the moment. >> and again, the administration has been criticized for being too massive. we heard jamie mcintyre say that should aleppo fall, it will play into their hands. >> the american government has not tried to gain leverage over the russians or the bashar al-assad government in syria to help make a compromise political deal possible. absent pressure on the syrian government, absent pressure on the russians, i can't see how we'll get to a compromised political deal to settle the conflict. all this seems to lead to the syrian government becoming emboldened. bashar al-assad is talking

tough. he doesn't sound like someone willing to negotiate the end of a regime, which is what the coalition wants. >> the difference is in bashar al-assad's tone in july, when the army was reeling, retreating, when the regime appeared on the verge of defeat. fast-forward several months to now. and he sounds trium fanned, saying that we will not negotiate with a terrorist. and really, it's because the russians escalated dramatically and there's no response from the friends of the syrian opposition. >> is there a hope of a solution to deleting i.s.i.l. if the coalition doesn't bite the bullet.

>> i don't think bashar al-assad has enough soldiers to occupy the eastern half of syria. bashar al-assad is short of soldiers, which is why he's bringing in shia fighters from places like iraq and afghan refugee camps. it's not - lining up would be hooking ourselves up to a patient in intensive care angela merkel argued in favour of a no-fly zone in the nearby parts of syria, something the turks called for, the u.s. resisted that. is one necessary? >> a safe zone might ease some of the worst aspects of the refugee crisis. it would ease some of the suffering of some of the syrian civilians whose suffering has been horrible by all standards. it does not end the conflict. i want to be clear about that. a safe zone is a band-aid

whereas the conflict itself is a very serious illness. >> and your rehabilitation to the barrel bombs and the killing of incidents, what should the reaction be from the u.s.-led coalition. >> the first thing is american officials need to stop saying the russians are playing a positive role. let's be clear, they are hitting civilian targets left and right. and they do not care at all. the second point is the russians will not adjust to their behaviour until they feel pain. what will make them feel pain on the ground in syria, is when their allies start to suffer more casualties. >> if the united states and its allies take a more aggressive line in syria, some argue that vladimir putin has opened the door for a possible world war

iii. >> i don't think the russians want to fight world war iii over syria, i don't think the united states wants to fight world war iii over syria, but i do think that a subtle but clear messing to the russians, that they cannot impose surrender, a cutle but clear message to the syrian government that it couldn't impose surrender, that the war will go on until there's a negotiation. that is necessary to get to the compromise. the sooner the united states do that, the better. >> ambassador, good to have your insights. thank you. >> my pleasure four american journalists arrested in bahrain on sunday left the country. the documentary maker and her crew were detained.

they were charged with illegal gathering. in recent days, demonstrators took to the streets to mark the fifth anniversary of the arab springs protests. also released gunmen kidnapped some men from a private apartment - three of them. state department officials thanked the iraqi government for helping to secure their freedom. the state department is providing the men transportation out of iraq. france's department voted an extinction for the state of emergency. the state of emergency threatened civil rights and did little to prevent the attacks. >> the second extension to the stated emergency giving sweeping powers to the police was approved by a majority of deputies in the french patient. it's a vote reflect ght the opinion of people -- reflecting the opinion of people across the country as a whom, still

traumatized by attacks killing 130 people. for another three months the police conducted searches and ordered house arrest without a warrant from a judge, demonstrations that could disturb public order will be banned. the measures due to expire at the end of this month were described by human rights organizations as excessive and disproportionate restrictions on fundamental freedoms in france. >> most of the country wants security. the issue is what does it imply to have security, is giving up on basic freedoms and guarantees of the rule of law contributing to security? we don't think so. >> reporter: the rock band eagles of death met ald who were on stage when it was attacked returned to central paris to play a con cert for the 90 that died when the government opened fire. >> the lead singer has been

given the reaction to appalling event in an emotional interview to a french television station. >> it doesn't have anything to do with it. if you want to bring it up, i'll ask you, did your gun control stop an until person dying. if anyone can answer yes, i'd like to hear it. i don't think so. i think the only thing that stopped it was some of the bravest men charged head first into the face of death with their firearms. i saw people die that may be could have lived, i don't know. i wish i do for sure, if they could have. there was real angels, wonderful people at that show that should be alive today. i wish they were. >> many of the people attending the concert on tuesday were in the audience. it was bringing back painful memories for everyone. >> it doesn't matter what happened. we'll be here, free and partying, enjoying ourselves in

the present, together. >> it will be emotional, obviously. in the end it's to have fun. to have fun no matter what. >> it's taken courage and defines to be at this concert. main in the audience and many people across france fear the fight is far from over pope francis visits a mexican state known for violence and drug trafficking. coming up, how the final day of his trip will focus on families divided by borders, threats and immigration rules. >> and a rare deal to stop the drop in oil prices. major oil producers around the world come together. why it may not be enough.

pope francis encouraged mexican priests to fan out and fight violent crime. he visited high crime areas. tomorrow he will visit the border city. he plans to talk about undocumented mexican immigrants in the united states, a speech that will resonate with million. heidi zhou-castro zoins us, the popes choice of location is significantly. >> reporter: thampt you can see and -- that's right, you can see and hear the preparations here tomorrow. he'll be giving mass here, and

the significance of that is great. he has a message of unity, unification, and that has symbolic significance to those divided. for seven years this has been a family divided. half the family members in the photo live across the border in mexico. maria and her husband live here near the border of new mexico, and have not seen three adult children and three grandchildren in mexico since the couple decided to outstay their visa in 2008, becoming unauthorised immigrants. >> my life was full. i had everything. we had to leave. >> reporter: the two say they left mexico after receiving death threats from a gang. they owned a grocery store and

were targeted for their relative wealth. in the u.s. they live in a trailer surviving on grazjyna's job watching dishes. >> we can hardly afford reject, food -- rent, food, seeing the doctor. >> reporter: their consolation, daily phone calls with their daughter. without papers, they can't make the journey across the boarder to see her in person. but we can. the children grew up here on the outskirts. now she is helping to raise her nephew, who never met his grandparents. >> it's difficult not to have contact. to not hug them or a"i love you itself. today it is a dangerous place. we are blocks from the home, and

there, between the trucks, another body in the streets. in the neighbourhoods dominated by violence. >> it's too risky for her parents to return. until recently it was the most dangerous city in the world. >> there's so much violence, murder, gangs. owning a business is dangerous. my parent's safety is important. without a way for either side to across the boarder. the chance to meet face to face is here. at this stage, this is all that separates the united states and the two sides of the family.

the family is catholic and hopes the pope's visit to the border brings attention to the suffering of families divided by immigration status. in 2013, 72,000 were separated by parents because of deportation. >> a situation that they can relate to. >> i'm happy, i have a sadness deep inside me, because i want to be with my children. >> i want the pope to touch the heart of america's world. when it reforms, so many families can be together again. for now, martha tells her mother not to cry. this is the closest they come to an embrace, 7 years and counting. the pope said his hope for mexico is that it will fulfil its own potential in that the young people will no longer have

a need to leave the country for opportunities. >> how big will the group on the american side of the border be allowed to be. >> right, we are feet from the border. the pope will be much approaching the fence giving a sense to the side. there's a few present for the blessing. the diocese arranged for an alternate viewing area in a stadium the only arab to head the united nations, boutros boutros-ghali, died today. he accepted it 26 years ago and leadership skills were tested. war broke out in the balkans, hundreds of thousands were killed. al jazeera's diplomatic editor james bays reports. >> a moment much remembrance from the man that led the united

nations through some of its most diff times. members of the u.n. security council stood in silence to pay tribute to boutros boutros-ghali, the sixth secretary general who died at the age of 93. the egyptian took office when the international community seemed more united. but the end of the cold war brought fresh conflict. within four months, war broke out. the initial response of a peacekeeping mission was criticized and did little to stop the bloodshed. the u.n. and the peacekeeping force was unable to stop the worst atrocity, the deaths of hundreds of thousands in a

matter of weeks. the as secretary-general. boutros blamed some things on the system and called for reform. this interview in 2009. >> we need a drastic change. the report would not - a report would not be able to cope with the new situation. we are living in a new situation that is completely different to the existing matters in 1945. >> when boutros boutros-ghali left the top job, he was a man with unfinished business. he wanted a second term but had lost favour with bill clinton and ambassador albright. he was passed over for a younger more dynamic man kofi annan

security issues in south-east asia, nav nation in the asian sea the focus of the asian summit the danger children face making their way to europe on their own to seek asylum - next.

welcome back to al jazeera america. i'm antonio mora. coming up in this half hour of

international news, a strike called by the opposition in the democratic republic of congo brings business and traffic to a halt stories making headlines across the u.s. in the american minute. president obama says the constitution a clear about whether he should nominate the next supreme court justice. speaking at the south-east asian nations summit. the president says he's going to nominate a well qualified candidate. others argue that the next president could replace antonin scalya who died on the weekend loni franklin is charged with killing nine women and a 15-year-old girl between 1985 and 2007. franks line pleaded not guilty. prosecutors say he took advantage of the crack epidemic to taunt his victims.

more tornados expected in florida as clean-up continues. 10 homes were damaged by a tornado in south florida. strong winds and cool temperatures are expected tooling ir. >> the asian summit has concluded after a day of talks concerning territorial disputes with china. >> reporter: there were few formalities at president obama's meeting with world in sunny land. the laid-back atmosphere was meant to stimulate consult takes, from working together on trade, and shared principles. >> freedom of navigation must be upheld and commerce not impeded. i reiterated that the united states will fly, sale and operate whenever international law allows. and we'll support the right of

all countries to do the same. >> previously they had difficulty agreeing on any statements. four were embroiled in disputes with china over portions of the south chae rer. china wields an influence over the region economically and territorially. few did not want to go against their neighbour. asian is nearly 50 years old. the group of different countries has been seen as toothless. the u.s. giving attention sends a message that they must work more effect lively to face shared challenges. there's more that 106 million living in asian. the potential of the region as a block is central to the

rebalance to asia-pacific. >> bringing asian world to sunny lands is seen by many ass united states re asserting a role of dominance. >> president obama hopes getting the world to agree is a step in the right direction. >> the president of south korea today denounced the regime of pyongyang. the parliament was told by park geun-hye that it is clear that north korea does not want peace. she responded to ongoing provocations. the government will take measures for the north to come to the bone-numbing allegations that nuclear development will not help its survival. but speed up the collapse of the regime. >> last week a rocket was launched into orbit.

others believe it was a test. seoul responded by suspending the participation in an area, a source of revenue the chinese prime minister met with a counterpart from south korea. china says it is open to a u.s. revolution against pyongyang, it opposes allowing the u.s. to install an antimissile system in south korea. >> four of the world's biggest countries agreed to freeze production levels. it is an attempt to stop the bleeding as oil prices drop. the deal will fall apart unless other major producers go along with it. bernard smith reports. >> reporter: cheap petrol may be welcomed by consumers, with a 70% drop in the price of crude. oil countries are feeling the

pain. saudi arabia, russia and kata say they want to freeze, not cut productions. it's the beginning of a process which we will access. and decide whether we need other steps to stablilize and improve the markets. this is very important. we don't want significant gyrations in prices. >> at other end of the table are the oil ministers of venezuela and russia, the economies are struggling with the reduction of revenue. the saudi arabia minister dismissed concerns about the effects on the country. >> i read a lot in the press. it is rubbish. the reasons it is, is because saudi arabia has access to many sources of income.

and we are working at a fast pace to diversify the economy, and increase the sources of income. >> so your economy can survive with the counter price of oil. >> no problem. >> oil prices have fallen because of oversupply and demand. producers have been reluctant to cut output for fear of losing their market share, and members of o.p.e.c. faced pressure from u.s. based shale-oil producers. >> saudi arabia, qatar, venezuela and russia will only freeze production if other producers including iran and iraq agree to do the same. that could be tricky. the iranians increased output after sanctions were lifted in january i'm joined now by steven, managing director of princeton energy advisors. great to have you with us. >> great to be here. >> would is freeze do much. the sense is that the world is

swamped by an ocean of oil. if there's a freeze, we'll have excess production, and too much oil. what would to do to prices? >> the answer is right now, nothing. we have a sur blues of supply over demand. i think the significance is different. i think the significances that we see two of the major powers, russia and the saudis sitting for the table and graing something. >> it's unusual. a lot of different levels, that they could agree on anything. >> the russians in particular are under pressure. vladimir putin has an occupation in crimea. and his own domestic constituents. he needs more revenues. >> sanctions that hurt the economy and oil prices is a double whammy. what do you think of the likelihood of the deal going forward. the only way this works is it everyone else is on board.

and azer bay around says no. and iran doesn't want to freeze oil production, it wants to increase. >> the deal clearly is not one acceptable to iran or iraq. i think that my read on to is the first step to see if consensus can be built. the first two are aligned. i think my sense is that the saudis are waiting for the iranians to make a move that indicates that they are going to be more constructive generally in the region. >> it's a geopolitical thing. >> yes. >> you wrote about iran and iraq. that they are the main culprits behind the glut.

if they don't agree, that will happen. the iraqis and the saudis increased production by about a million of the market. they are killing the market. iran is killing it prospectively, because people expect it to increase. if it doesn't go forward the market gets better or they just take the price. >> i think the prices are bad. o.p.e.c. producers can bring the price back to $50 without brink u.s. shale back online. the motivation to do a deal is there. that motivation of the saudis, the shale production, they wanted to break production. it was causing problems, increasing a glut. it's not completely been successful. >> no.

>> there's les production and less movement to new wells, but it's plugging along. >> that's the problem. the expectation was that the saudis would sweat it out. it came down a bit, 400,000 barrels, and has been at that level more than six months. the problem for o.p.e.c. is do they want to continue to sweat it out which could take another year, if china goes down, it could be a year beyond that, or is it time for o.p.e.c. to say we can make a cut, increase prices, but not bring shale online. that opening there you mentioned china. if the chinese economy and the world economy continue to slow down, is there much they can do without cutting drastically? >> they can suffer low prices. you can get $20 or lower for a while. that motivation goes up. let's wait and see on china.

oil sales were up. we had mixed signals out of the economy. we don't know if it will teeter over. the motivations were there to cut production for o.p.e.c. >> if prices bounce back, will shale in the u.s. bounce back. >> over $50 it will bounce back in some quantity, yes. >> it's a fascinating time. the oil issues are having effects on world stock markets as well. so we'll have to see how it lays out. toed to have you with us -- good to have you with us. austria is in the northbound path of a flow of refugees from turkey into germany. they'll follow the lead using daily quotas. once the numbers are reached, the flow of migrants into austria would stop. she didn't say how many would be

allowed in. 10,000 refugee children are missing. many are unaccompanied. authorities feared many were victims of human traffickers. mohammed jamjoom met with a child that made a journey from iran, to sweden, alone and afraid. >> this may look like childhood fun. for hussain, laughter nor levity comes easy any more. reminded of constantly, the journey. >> i was squared. i was so tired of the life i had, i didn't think about the risks. >> originally from afghanistan, hussain's, whose identity we are hiding for his protection set out for iran at the age of 14. alone and afraid, he paid smugglers what he could. by 15 he made it to sweden, where he spent months in a camp before being placed here at the

lighthouse center. >> there are 14 unaccompanied refugee children residing here. it hardly makes the minors left vulnerable than before. the past months saw an increase in sentiment. and with a strung of arson attacks with shelters like this. now, even the locations of the centers are no longer public. >> aid workers tell us it's not just the threat of violence that the kids have to worry about. >> criminality. they are without the legal guardians. also, trafficking, pedophiles. we have some reports of it. at a time when thousands of minors reportedly went missing in europe. it's getting harder and harder to ensure the children stay safe. >> we cannot have that supervision of them, what they do in their spare time, because it's an open camp, and they can go and come almost as they

please. >> like the other children living here. hussain chose sweden because the migration agency aids in bringing over the families of refugees, who are granted asylum. hussain lost contact with his parents and siblings a year ago. he plied for asylum. he doesn't know if it will be granted. >> i'm afraid what will happen if he sends me back. >> despite the attempts to brighten the mood. it's been a challenge to keep the darkness at bay. >> when you are a refugee, you don't have the time. when you come here to these camps then you have your own rules, you are alone and think about anything. >> in hussain's room. the atmosphere is as bleak as his outlook.

>> i can't sleep well. i have nightmares. i see a psychologist for problems, but i think about all the travelling i did to get to sweden. >> now, at the shelter, hussain's desperation grows deeper as he wonders when and if the pilgrimage will come to an end ukraine's u.s. backed government barely escaped a vote of no confidence in parliament. lawmakers reacted to growing frustration over a depp recession and it threat of pro-russian separatists. the fate occurred after the president called on the prime minister to resign. the tally was dozens short of 226 needed to topple the administration and call for a new election. hundreds demonstrated outside parliament in kiev to protest government policies. >> former president nicolas sarkozy is the subject of a

formal investigation. magistrates questioned kofi sarkodie about claims he broke spending limits during the re-election bid in 2012. sar cosy denied knowledge of the overspending. it's not clear if he'll be charged with a crime. the investigation is likely to dog him for months when he runs for president next year. >> a strike in democratic republic of congo sent a strong message to the country's president. many of the streets were empty, there was a few customers in stores. critics of joseph kabila suspect he may try to change the constitution to allow him to run for a third term. most shops were closed and public buses empty. >> reporter: the government positioned the police in different parts of the city. that sired people coming to the -- scared people coming to the mark. here in the market it's empty.

we need the government to take things seriously, that the head of state understands that his entourage is lying. >> today was the anniversary of a pro-democracy administrator 24 years ago. >> a deadly riot at a mexican prison prompted a call for an investigation from the united nations, after authorities discovered luxury its inside the gaol. adam raney has the story from monter amexico. >> authorities have been clearing out tonnes you have lumpry its from a -- pluxy items from a prison. 49 were killed during a bloody battle between rival factions of the cartel. there were a lot of luxury its at stake. they had been removing televisions, digital cable. aquariums, beds. they found many, many statues of the death saint. this folk saint that many in the

drug trade worship and many, millions of downtrodden people worship as well, all the luxury its, tonnes, show how endemic corruption was, the director of the prison has been arrested on murder charges and it's a sign of how corrupt prisons were. people may remember that chap 'em gruzman was able to -- aldo rafael mendez guzman was able to pay people -- el chapo was able to pay people to dig a tunnel. a city here is one of the final places he visits as he wraps up a trip to mexico on wednesday adam raney reporting from monterey in mexico a milestone in u.s.-cuban relations. a flight deal. the european space agency launches a satellite to boost its ability to monitor environmental changes and warns

of migrations of people. >> and a preview of uganda's elections. the government is cracking down on free speech as the president tries to extend his 30 year rule.

in a matter of months why we

could see flights from u.s. to cooba. airlines have been -- cuba, airlines have been invited to apply. >> reporter: with sits, handshakes and smiles, a barrier fell. >> it allows 110 passenger flights to resume as soon as possibly. more than a year ago president obama announced the u.n. would normalize relations. cuba since then experienced a boom. there has been a 64% increase in american travellers, the agreement is more than the beginning of a new relationship in aviation. according to the u.s. transportation secretary. >> it represents a critically

important milestone in efforts to engage with cuba and normalize relations. >> the signing took place, during the crisis cannons were positioned and weapons stockpiled there. it's been 50 years signs flights were halted. there has been a travel ban in place. but there is hope that that's only a matter of time before it's lifted. >> the signing of this memorandum marks a new stage and expand links between the two countries. >> for americans, this opens up a world sealed off for half a century. for cubans, it represents an economic opportunity that could change the face of air country international researchers say they had remarkable results

with a new treatment for cancer, including leukemia. it uses the patients immune cells to target a specific type of cancer. more than 90% of patient went into remission with the technique. it was announced at the american association for the advancement of science. health experts sound the alarm about the zika virus. many have been summoned to brazil for meetings this week and next. brazil has been hit hardest. the w.h.o. says controlling the population might be the best way to stop the virus. the group is looking at releasing sterile and modified mosquitos. it's prompted blood doingation rules -- donation rules saying anyone in the u.s. exposed to

the virus wait four weeks. now a look at how news outlets across the world are reacting to event. the guardian says the zika virus is revealing levels of economic levels in brazil. the distribution of microsephaly cases shows that the poorest are hit hardest by the virus, because the mosquitos proliferate in areas where waste and sewerage management are not looked after by the government the times says turkey's government bears blame, by allowing arms to across the boarder and supporting extremists though oppose bashar al-assad. it blames recep tayyip erdogan for wanting to topple bashar al-assad more than he wants peace in syria. and argues recep tayyip erdogan's threat of military action would heighten the risk of conflict with russia. the "sydney morning herald" reminds us millions of syrian refugees are like us - doctors,

teachers, formers, they want peace and stability. the paper argues they want to go home. all they want is to be productive members of a community, and we need to give them a chance. >> from weather forecasting to fighting forest of fires, we rely on data to know what is happening on earth. the launch of a satellite has scientists excited. the technology editor explains. >> reporter: it's taken eight years to develop at a croft of $340 million. sentinal 3a is one of the most advanced satellites. orbiting 814km, the instruments measure the temperature, colour and height. sea surface, and can detect the

thickness of sea ice. on board the satellite is a raid some ter. it measures the surface temperature, it is quite something. you try to measure that. >> the satellite passes over every part of the globe. the data it collects will be freely available. this means it will help scientists monitor the solution. it can be used to track forest fires, the movement of ships and migration of people across the borders. >> the satellite helps to monitor different biogeogram attic areas in the see, agriculture over the land. water resources, and also the sea surface temperature that will feed into the weather

forecast. >> reporter: described as europe adds eyes in the sky, sentinel 3a is the second of three satellites, and it's hoped the data will help us understand challenges and threats. >> china announced plans to search for alien life. the programme needs room for the largest telescope in the world. it will be 550 yards in die am ter. the government plans to relocated 9,000 residents to create a sound electromagnetic wave environment for the telescope. >> that's it for the international newshour. in the next hour, the nest contest in the presidential race are four days away. we check in.

back with more news in a few minutes.

good evening i'm antonio mora, this is al jazeera america. tough words on the presidential campaign trim. a look at the strategies of the top four republican candidates hoping to win votes. on the democraticside, campaigns of hillary clinton and bernie sanders focus on one dem graphics. also date copy. >> i'll present someone that is qualified for the seat