this is bbc world news. the headlines: the italian government is preparing emergency measures after a big rise in coronavirus cases in the country. it will prevent people from coming into the entire region of lombardi as well as other provinces as well. a hotel has collapsed in china that was being used as a quarantine facility for those who had close contact with confirmed cases. the lebanon government has voted to default on loan payments. they had

been do to repay a £1.2 million bond on monday and is trying to restructure its debts. greek officials are using tear gas and water cannon to get people trying to break through defences with turkey. the turkish president has said he has ordered its coast guard to stop migrants who are trying to reach the greek islands. at 10:10pm, kate silverton will be here with a full round—up of the day's news. first, colombia has long been the world's largest producer of cocaine. our world travelled to the cauca valley in the country to find that farmers are now caught between new criminal gangs with devastating consequences. for years, i've been reporting on the uk's voracious appetite for illegal drugs. i've watched the market being flooded by cocaine that's cheaper than ever. so, i've come to colombia, where 70% of the world's cocaine is produced, to find out why. i'm getting rare access,

a chance to meet the cocaine producers in one of the most dangerous places in south america. and to meet the smugglers who are sending the drugs abroad. how many of those shipments would you expect to reach europe? criminal gangs are killing anyone who stands in their way. those gangs are never far away. some armed men have been spotted nearby. i want to discover what's happening now in colombia that's making cocaine in the uk more available than it's ever been. for 50 years, colombia was home to the world's longest running civil war, but in 2016, a historic peace deal was signed

with the main rebel group, the farc. a new future was the promise — newjobs, new roads — all negating the need for the farc to produce cocaine to finance their political goals. but just a year after signing the deal, cocaine production reached record levels — up nearly a third to around 1.5 million kilograms. i'm heading to an area where the cocaine trade begins. this road takes me to one of the main cocaine—producing parts of colombia. what i'm hoping to do here is to meet some of the farmers who are growing the coca leaves. colombia has spent billions of dollars eradicating coca plantations, so farms are well—hidden. when you come here, you begin to realise how absolutely professional these criminal gangs must be if they can get a tiny amount of cocaine from these remote areas to the bars

and clubs of britain. the peace deal weakened the farc, allowing other criminal organisations and dissident farc members to seize control. abandoning political ideology, the groups make cocaine production more efficient. this is a perfect spot to highlight the different gangs that are trying to vie for control of cocaine. from this valley, downwards is controlled by the clan del golfo. behind me, over there, is the eln. this side is the eln, as well, different branch. the roads at the bottom, they're controlled by another group called los caparrapos. after hiking for hours, i arrive at the coca field. how old are you? shouldn't you be in school? wouldn't you prefer to be in school?

the peace process promised farmers they'd get help to grow legal crops, roads would be improved so they could access markets, but of the nearly 100,000 farmers who signed up, more than half are still waiting for any help. does it pay well? all this effort and you can get maybe $150, maybe

$220 every two months? these farmers also start the process of turning innocuous leaves into one of the world's most addictive drugs. a shack is well—hidden. this is where i'm told the next stage of the cocaine process happens, and i'm told it's disgusting. i can assure you, it certainly smells awful. first, they add limestone, then ammonia. it's hard to believe that people will snort all these poisons, not to mention the environmental

destruction they cause. the chemicals that they are adding will run off down the hill, into the rivers that we have been walking through today. guys, we have to leave. 0k. there are people coming, there are people coming. some armed men have been spotted nearby. this emphasises how dangerous this entire region actually is. in the dead of night, the young men return and continue the production process. the incident that made us run turned out to be four members of the clan del golfo being arrested by the army.

so, when we left last night, this was covered in leaves, so all those leaves become this. it stinks. the next stage is to add heat to remove the water and turn it into pure cocaine paste. then it's sold to the criminal gangs. they run crystallising labs, where they will add more strong chemicals, such as sulphuric acid, and turn this paste into white cocaine powder. so, if you could produce more, you would produce more? there's lots of people have been killed in colombia because of cocaine.

violence is spreading across colombia. a coca valley in south—west colombia has turned into one of the most dangerous regions of the country since the peace deal was signed. this is home to the indigenous nasa people. there are nearly 200,000 of them, and colombian law grants them the right to rule their ancestral land. they live out here in these rural areas, in the hills and mountainsides, and this area used to be controlled by the farc. exercising their rights meant that, for decades, the nasa suffered under the fa rc. but since the peace deal, things have got even worse. as different gangs now compete for territory, the nasa are being attacked from all sides.

more than 50 of them were killed last year. the un has described their situation as dire. wilmer invites me to attend a meeting of some of the victims of the violence, but before we set off, he insists we perform an ancient custom.

this is a spiritual ritual that the indigenous tribe perform before they go to anywhere dangerous, and, essentially, you have to walk in a certain way towards this circle. 0nto this rock? record levels of cocaine production are only worthwhile when the drug can reach its foreign market. these roads are of strategic importance. so, the reason this area matters to the gangs, the criminal gangs, is not because of what's grown here? throughout the journey, wilmer is nervous, intensely focusing on each vehicle we pass.

it's an uneven fight, and i just wonder why you don't let them use the routes. the consequences of opposing the gangs soon become very obvious. so, what happened here, then?

cristina bautista was a 30—year—old indigenous leader. but her bravery made her a target. just ten days before my arrival, she was killed alongside her four indigenous guards. we finally arrive at the village of tacueyo. this meeting has been organised by the peace commissioner, forced by a spate of killings to confront a community that feels abandoned by the government.

applause just tell me about cristina. what sort of person was she? the peace deal was negotiated by the previous president amid opposition from many members of the current government. they've been in powerfor almost 18 months under the leadership of president ivan duque, who has been accused of failing to support the agreement. i grabbed the chance to put the concerns of the nasa people to the peace commissioner.

so, a lot of people in this area believe the recent violence is a direct consequence of this government failing to stand up for the peace deal. that is — they never said that. they tell that to me. the peace agreement was designed to be implemented in 12 years. we are beginning. we are in the transitional process. so, this is not the reason, the reason is not the trafficking. i don't know if they told you... but... no, absolutely. is this an interview? this is being filmed. is that — are you ok with that? yeah, but i need to be prepared for that because you're asking me questions. 0k. um, right. because we were trying to get an interview with you in bogota next week. yeah. we'll do that. but the interview never happened. and with that, off went the government officials by military helicopter rather than riding the risky, rutted mountain road. the nasa people have their own blue uniformed security guards,

of whom canas velasco was one. last february, he was part of an unarmed team that recovered these weapons and arrested eight farc dissidents. the incident made him a target, and in october, the father of six was assassinated in front of his wife. wearing this uniform increasingly requires courage. this man survived the ambush that

killed cristina bautista. given what you have seen and the dangers involved, why do you continue to do this? the violence is driven by the vast fortunes to be made getting cocaine from the mountains to the markets. this northern part of colombia, by the caribbean coast, is hugely significant for growing bananas. but the huge number of containers needed to send the bananas overseas provides a perfect opportunity for the drug smugglers to send cocaine abroad as well. this is the port of zungo embarcadero, a key smuggling spot. the shallow waters mean containers are carried by tugs to a floating

port three hours away, where large ships will take them on to europe. i'm off to meet a man who sends up to a tonne of cocaine to europe each month. and he's not the only one. dozens of smugglers use the port, working for different groups, but all paying taxes, access charges, to the clan del golfo — currently the biggest organised crime group in colombia. how easy is it to transport cocaine out of colombia?

for real?! in any one year, you will try to get 12 shipments to europe. how many of those shipments would you expect to reach europe? how much do you get paid for sending this through? so, you make about $150,000 per shipment? and you've been doing

this for six or seven years, so you have earned millions doing this. do you take cocaine? no. why? but others are not so squeamish. colombia's most famous export has never been in greater demand in the uk. before heading to colombia, i met someone who was interested in talking to the farmers. so, earlier, i asked you did you know what happened to the coca plant, and you said no, so i want you to have a look at this video.

in nottingham, meet 25—year—old lewis bradwell. he started taking cocaine as a teenager. what was a regular habit is now an occasional hit if friends are doing it. he's keen to know about the origins of the drug and readily agrees to chat to the farmers, so we arrange a 6000—mile conversation about cocaine. so, you never take cocaine yourselves? smart lads. you feel a buzz, a rush, uplifted. you have plenty of energy.

you can stay awake for two or three days on end. yeah, afterwards, you feel terrible. you feel crap the next day. i started when i was probably about 19. it's put in front of us everywhere. i've seen it from a young age. you can't really get away from it. that was the main reason i wanted to stop doing it in the first place, because the cost was through the roof. i'd be spending £200 easily — £200, £300 a week — which is your two—month wage, easily, every week, just on cocaine. it's been an eye—opener talking to you both. i'm shocked how young you both are. and no—one, at 16 years old, should be dealing with such stresses

of getting you 12 years in prison or getting killed by another rival gang. thanks, guys. some areas of colombia are facing a perfect storm. they feel the government has failed the peace process, allowing new murderous gangs to exploit the vacuum. they, in turn, are eyeing the vast fortunes to be made supplying increasing demand from wealthy foreigners for cocaine. both production and consumption of the drug are at record levels, leaving these communities feeling ignored and helpless.

hello there. the early spring blooms are going to take a bit of a battering over the next few days as it's going to be unsettled with spells of wind and rain pushing in off the atlantic. certainly, part one of the weekend has been unsettled with rain and gales spilling into southern and western areas through the course of the day. as we head on into sunday, the main rain band will have cleared off into the north sea, and then we're in a run of chillier westerly winds, which will bring in lots of showers, particularly into western areas. that said, part two of the weekend looks sunnier than part one, so we'll see sunshine and showers for many. lots of showers into the north and the west will be heavy.

some hail, thunder and even some wintriness over the high ground of scotland as the temperatures will be lower across the board, but certainly in the north and the west. eventually that cooler air reaches the south east towards the end of the day. now into next weekend, it does stay unsettled. we've got low pressure taking over, so it's going to remain wet and windy. certainly, monday and tuesday look very wet and windy, and then it's sunshine and showers with it turning colder towards the end of the week. this is the next area of low pressure moving in for monday. it will bring initially some wet and windy weather into northern ireland and spread into the rest of the country later in the day. we start monday off bright, quite chilly, some sunshine around, but then the cloud will tend to build up as this system starts to push in to bring wet and windy weather to northern ireland, then into central and northern and western parts of britain. some heavy rain on some western hills with some snow on its leading edge for the north pennines and into scotland. it'll gradually turn milder in the south as well and we head on into tuesday. stays very windy, could see another squeeze in the isobars there later

on tuesday which could bring a spell of gales or even severe gales across northern areas. so, tuesday's a milder day, much milder in the south. variable cloud with some sunshine, too. lots of showers across western scotland and they'll be blown in on a very strong wind gusting 50—60 mph. later in the day, we could see even stronger gusts than that. given some sunshine across the south and east with that mild air mass, it could be extremely mild with temperatures of 16 or 17 degrees here and double figure values across much of central and southern scotland. that area of low pressure clears away later on tuesday, and we start to see westerly winds again on wednesday. slightly cooler air mass, you'll notice there's more wintry showers mixed into this airflow. so, for wednesday, another day of sunshine and showers. best of the sunshine across southern and eastern areas. lots of showers in the north and west. again, some heavy with hail and thunder and increasingly wintry over the high ground of scotland. scotland and northern ireland look chillier on wednesday. 10—13 degrees for england and wales. we maintain this westerly airflow

as we head on into thursday as well. could see this feature bringing more prolonged showers or prolonged rain to parts of northern ireland and into northern england through the course of thursday. winds coming down from the north across northern scotland, so here, sunshine, wintry showers, area of rain stretching from northern ireland into northern england and to the south, a mixture of sunshine. temperatures will be lower on thursday, just about double figures in the south east and low to mid single digits for the north. now the jet stream is key to what is happening this week, the weekend and beyond that. it takes aim at the uk, bringing further weather systems to our shores and you'll notice that we generally lying on the blue side, the cooler side of the jet. it will be turning cooler as we end the week. fairly unsettled at times with low pressure always skirting close by for the uk to bring sunshine and showers, and it will be cooler in the north than further south.

this is bbc news i'm reeta chakra barti. the headlines at ten. the government is planning emergency new laws in response to the coronavirus outbreak it comes as the number of people who have tested positive for the disease in the uk rises to 209. milton keynes hospital is isolating people who came into contact with a man in his 80s who died from the virus on thursday. currently have five patients who have been isolated and are being tested and we are waiting for the results and we have asked nine staff to self—isolate. 140 britons remain quarantined on board a cruise ship off the coast of california in which 21 people tested positive for coronavirus.

england held on to beat