we'll have more of america tomorrow. u.n. syria envoy is in istanbul for talks with the opposition. trying to get a deal in aleppo. from al jazeera's headquarters in doha i'm jane dutton we are in yemen's southern city of aden where people say shifting power to their city will bring trouble. >> bombing every day. we can't give him quite into that. >> you can't. >> we can't. >> ukraine's ceasefire - not

taking taking hold in mariupol. and trying to entice children abroad back home the u.n. special envoy is in turkey trying to secure opposition support for a freeze in fighting in aleppo. the syrian government has agreed to suspend air strikes and shelling on aleppo for six weeks. hampering a potential deal are i.s.i.l. fighters around aleppo. they are unlikely to observe any ceasefire. the al qaeda-linked al nusra front is an obstacle. dismissing the u.n. proposal as a conspiracy allowing syrian forces to launch more assaults. there's a disconnect between the syrian opposition and fighters on the ground. if politicians are a good plan

opposition fighters may not comply. zeina khodr is in beirut. talk us through the plan and what is on the agenda. >> well he ha been trying for months to get the wars sides to agree to a truce in aleppo. he calls it a freeze in fighting. he wants to reduce violence. ease the suffering of the people allow aid to reach the city. there has been little progress on the ground. they have been shuffling between turkey and rebel forces. his office is not divulging much detail on who he is sitting with. we understand the syrian government agrees to a six week truce during which they halt air and artillery bombardment. what they want is for them to

agree they'll do the same. it targets the west of aleppo with rocket fire. this will be difficult. this is seen as the only game in town. there's no political associations. they are hoping the fighting will allow the process to begin. >> yet no one is talking to i.s.i.l. and they continue to commit at rosties. >> yes, the president of i.s.i.s. - they do control territory in syria. and like yesterday, they captured 70 syrian christians. i.s.i.l. is not just at war with the syrian government. but at war with groups. they have many enemies as well as the u.s.-led coalition. it can only do so much. they are targetting i.s.i.l.

from the skies. you need partners on the ground. they don't have that apart from the kurds, battling i.s.i.l. in the north-eastern province. if you talk to people in the opposition, they say the international community should shift the process, and not just concentrate on targetting i.s.i.l. they need to oust the syrian government. if you talk to the syrian government. they say the only way to find a solution is to deal with us. we are the only partners on the ground and can get rid of this terrorist organization. human rights watch says it has proof that syria's government used barrel bombs to attack rebel held areas, and said the bombs killed more than 6,000 people since the u.n. security council passed a resolution last year calling for an end to aerial attacks. houthi rebels have taken control of an army camp in sanaa. the armed group controls the

capital and wants the president abd-rabbu mansour hadi brought to justice. he fled the capital and is in the southern port of aden trying to don sol date his -- consolidate his power base. his move doesn't sit well. there's concern if the power shifts from sanaa to the south, it will trigger instability. >> reporter: this is aden the de facto capital since abd-rabbu mansour hadi arrives here. the houthi militia makes the call and puts him under house arrest in sanaa. he escapes, and now is trying to rule from aden. but the reaction of people here may surprise many. they are shouting no no no aden is the capital of the south. we don't need the north. we want independence. >> it's not the secret history of bitterness between the north

and the south. instead of being buoyed. people we talk to expressed apprehension and mistrust. >> there's zero trust between the north and the south. the southerners were the first to demand unity, contributing more than 70% of the country's territory and resources, but received nothing in return. abd-rabbu mansour hadi is a southerner. he doesn't speak for the south. if he does so and takes the right decisions, we'll support him. >> despite high levels of poverty, people hope for a better future and a return to what they perceive to be a better path. the symbol flies high wherever you look. the flag of the socialist or southern yemen for short. since the two yemens united. people tell us the south was let down forgotten and excited.

despite the fact. >> we accept it's a temporary capital. some believe the possible only brings trouble. >> the houthis are threatening to invade the south. we don't need the capital. we want peace and calm. they should stay there, and we here. for the kids aden was regarded as a southern backwater. although that may be about to end. many fear what problems the new status may bring iran's foreign minister zarif warned the u.s. that exerting pressure on iran during nuclear talks will lead to

negative reaction, following comments by secretary of state john kerry that washington would leave the talks if tehran didn't take a productive decision to prove the peaceful nature of the programme. the u.s. wants train to limit its atomic production in exchange for relief. john kerry accused russia of lies in its role. congress was told that russia engaged in a period of overt and extensive propaganda exercise that i have seen since the height of the cold war. russian authorities have been persisting in misrepresentation, lies about the activities to my face the face of others on different occasions. on the ground in the east of you withdrawn, army and pro-russians accuse each other of breaking the ceasefire. there is concerns rebels are moving forces to mariupol.

it's important to capture the port. paul brennan explains. >> reporter: east of the city of mariupol the ukrainians delivered franks to the front line and the continuous souped of artillery and tank fire further forward is why. while it's true this the guns have fallen silent along portions of the line of conflict. it's not happening here. bombing every day and we can't give him ... >> reporter: you can't reply with fire. >> we can't. >> reporter: we were taken further forward along dry dusty lanes, passing abandoned houses and weaving between ukranian military positions. there are tanks and gunning, and no intention to withdraw them. >> translation: these tanks are

on the second defensive line. do you hear the sound, it may be shelling or a ground assault. if it's an assault i must be able to withstand it or make a reply. not just stand and watch. >> reporter: a few hundred meters from the front line the sound of tank fire is continuous. the ukranian army is digging trenches. >> there's a backdrop of the sound of explosions in the trenches near mariupol. we've been told not to reveal the location. you see the urgency with which they are being dug. the city of mariupol with its steelworks and busy seaport was controlled by separatists before being recaptured by ukrainian soldiers. industrial power gives it strategic impetus.

in the city itself markets operate. the uncertainty is creating deep anxiety. >> translation: of course we feel anxious. i stand here at the market and see ukranian military vehicles heading to the front line to help the army and i think mariupol will not be surrendered. >> translation: of course we are worried, when you live on the border of donetsk and see what is happening there, you worry it can happen here. a lot of people have fled the city. >> translation: we hope our soldiers will defend us and not let separatists and bandits into the city. we hope other allies support us. it would be better if they give us weapons to support ourselves. >> international monitors expressed concern. dim loam as yea called little to silence the guns here. a police officer in venezuela confessed to shooting

a teenager with a plastic bullet during an anti-government protest. the 14-year-old was shot in the city of st. christo bull. the city in the we were state was the epicentre of large protests last year. >> soldiers from chad killed more than two boko haram fighters. niger, cameroon and chad are part of a campaign to help nigeria fight the armed group. the nigerian military released the video which it says is an operation against boko haram. the defense was in the northern regions. two bomb attacks killed 24 people in northern nigeria. two suicide bombers detonated the explosions at crowded bus stations. it targeted commercial centers. there's more to come on the programme. should people in india be

worried about swine flu, we'll be live in new delhi to find out. >> in with the old, out with the new. we go to nepal where there's a push to clear the past. rica to see how one rainforest is fighting back. >> wow! some of these are amazing. >> "techknow's" team of experts show you how the miracles of science... >> this is my selfie, what can you tell me about my future? >> can affect and surprise us. >> don't try this at home. >> "techknow" where technology meets humanity. monday, 5:30 eastern.

>> sunday, the parents of captured american reporter austin tice. >> austin went missing in syria. >> campaigning for his release and maintaining hope. >> austin tice is alive. >> find him and get him home. >> a special "talk to al jazeera". sunday, 5:30 eastern. only on al jazeera america. you're watching al jazeera. a reminder of the top stories much the u.n. special envoy to syria is in turkey. trying for a freeze in fighting for aleppo. syrian government has agreed to suspend air strikes and shelling on aleppo for six weeks.

houthi rebels in yemen have taken control for an army camp in sanaa. they now u.s. secretary of state john kerry has accused russia of lying to its face. the u.s. secretary of state told congress that russia had not engaged in such propaganda since the cold car. >> swine flu outbreaks set up some areas to make people aware of the risks. how and what are the officials. >> yes, absolutely. health officials, state officials across india have been monitoring this for some time. we have been looking at an increase in cases in particular parts of the country, in the state of rajjes stan. they are monitoring it closely

from the doctors and health officials. they have said there's a cause for concern, is it a cause. we look at a seasonal outbreak described. it's not yet termed an epidemic. but we are expecting numbers to begin to decrease in the worst affected areas, as the temperatures gets hotter in india, which should be any time from now. i wonder what the wider health implication of this are. >> absolutely. in terms of the wider health implications from the people we have been speaking to. this is not just about how swine flu is dealt with. it's how a wide range of challenges across the board and boils down to awareness, starting at the grassroots. that's where health activists are calling for capacity and it's not just about what happens in terms of the treatment

process or the diagnostic process in india, it's about the awareness and making people realise what the challenges and implications are. that's been a perennial problem for india and the health system. >> thank you for that. >> african union leader was at the center of an assassin float. the plan revealed by intelligence documents obtained by the investigative unit. showing south african and ooeth i don't known spice caught up in chaos. we have this report. >> reporter: october 2012, this is the new chair of the african commission. days later she faces what security services call an eminent threat to her life.

the south africa spy cables reveal an assassination plot set for october 24th at the headquarters. what followed was crisis meetings, confusion, a failure to find actions. the top spy warned of a plot but followed orders not to reveal orders of the identities. he asked for prime ministers permission to give specifics: after being told of the plot. ethiopian security assigned four more guards. documents revealed embarrassing failures:

african union security chefs said it was too pricey for the body guards the food: . on the day of the plot south african flies meet to discuss the purpose of their visit:. >> the agents checked the plotters name but come up with nothing. in the end, there is no attempt on the life of a chairperson. the spies lacked information and time and had not organised lump for the chairperson's body guards. when it came to stopping an assassination, all they could do was hope and on this occasion they got away with it. >> you can read the original spy cables, related articles and

analysis on the exclusive website on aljazeera.com/spycables. tell us what you think on twitter, with the hashtag supply cables. >> people in baghdad are holding a funeral procession to bury 25 victims killed in a double bombing. the attacks struck a neighbourhood. the bombings appear to be coordinated, the first and second blast going off within minutes of each other. no group claimed responsibility for the attack. >> the man that shot and killed an unarmed black teenager in 2012 will not face federal hate crime charges. neighbourhood watch volunteer shot trayvon martin as he walked home. george zimmerman always insisted it was an act of self-defence. the us state department said there was a lack of evidence to charm him with violating federal civil rights laws. a controversial gas pipeline

in north america is in limbo after u.s. president obama vetoed a bill that would allow is to be built. the proposed keystone xl pipeline would run oil from canada to the u.s. gulf coast. patty culhane explains. >> reporter: millions lobbying in a heated debate in congress and a bill for the pipeline has been vetoed. the weight continues. the u.s. president laid out the criteria for approval. >> our national interest will be served. only if the project does not significantly exacerbate the problem of carbon pollution. >> the u.s. state department said the canadians sands would be developed, pipelines better than trains move it. now the environmental protection

agency weighed in saying maybe not. because of a drop in oil praises it wouldn't be possible. in this letter tar sands create 17% more greenhouse gas than other crude. it would be equivalent to adding 5.7 million cars or 7.8 coal-fired plants. it's not about the environment, but economics says the president. some believe the bottom line is it's more about politics than impact the final decision will have. >> i think it's more symbolic for politics than the economics, and this terms of differences in united states' ability to perform. >> reporter: the fight over keystone may be settled soon. it's a first clear indication that there'll be more battles in the next two years. the head of the u.n. climate

panel has been fighting off allegations of sexual harassment. he is accused of inappropriate behaviour towards a female researcher at his think tank in new delhi. he chaired the intergovernmental panel on climate since 2002. >> in brazil. there has been riots. police in between two groups. during an event the president silva was due to speak in support of the petrogas energy company. protesters accused the oil firm of giving bribes to politicians and petrogas in exchange for favours in the contracts. >> wild fears forced hundreds from their home. more than 15,000 heck airs of

fires have been burning. hong kong unveiled a new visa programme to entice the children of pant residents born abroad to come back and work. the city hopes it will reduce the ageing population and shrinking workforce. >> tracy was born in hong kong spending the last 20 years in canada. five months ago she returned as a newly wed. >> a little more crowded than it is in canada. i like the busy pace of hong kong a lot. it takes a bit of adjusting to. but so far, so good. >> like many hong kong residents. she and her family left. at its peak 60,000 people were leaving every year. australia, the united states and canada were the most popular

nations of chaise. >> there were a lot more hong kong people but now it's changing in toronto. >> 40% of those that left have returned. it's the children born abroad who the government wants to recruit. >> i think there will be a ballpark figure t 100,000 young people in the age category. they may be potential targets to come back. if we get 50% of them 50,000 that would be helpful. >> fighting with an ageing population and declining workforce, the government wants professionals. under this scheme the city's executives is relaxing immigration requirements. offering a visa for immigrants

to come to hong kong. >> in a city where home ownership is expensive many choose to live with family. both plan a future in hong kong. >> right now, do we see ourselves moving back to canada? maybe some day. i don't think in the foreseeable future. we'll see what my wife says. >> reporter: the one visa scheme is a pilot programme. it will be offered long term. >> in nepal traditional buildings have been pulled down and replaced by modern structures. people are starting to recapture history by renovating in classical sometimes. >> the school is one where young people can learn the traditional art of wood carving. they have started to make a handsome living out of it.

>> my parents worked as carr penters. it's good work i can earn enough to raise a family. >> the students of the school help to build many much these magnificent buildings around this city. the school is private. many people called him mad when he started. he turned preserver and found it impossible to explain the value of renovations. he built his house to serve as a case. >> the impact of this house shows, whenever anyone with an old house, when he or she comes in this house, it's special. >> the restoration started decades ago.

>> in the early 1970s, there was a president to the king and queen, this building. they were content to renovate the temples. they have been restored. there are subsidies to lowingals to build their house. even with those subsidies many of the houses built are concrete tour blocks with brick fas arts. the architecture revital of the old time couldn't make them happier. >> with an old style building you need a wooden netted window. >> he has restored them in 100 houses and is aiming for more. concrete and glass have taken over most of the valley.

addressing that trend will need the help of more willing to protect the past aljazeera.com has all he the stories and more. learnt a tough lesson. opportunity necessarily trickle down. i challenge the man who probably has more influence over your taxes than anyone you voted for. plus, president obama uses the power of the veto pen to rejects a bill authorising the keystone xl pipeline, the political implications, and where the pipe line battle goes from here. i'm ali velshi, this is