this is bbc news, the headlines: the white house has confirmed who will be in the legal team which will defend president trump in his impeachment trial. it will include ken starr, the main prosecutor from bill clinton's impeachment, as well as the lawyer alan dershowitz, who's clients included oj simpson and jeffrey epstein. the us says it will start to screen passengers from china for symptoms of a new virus that has killed two people. there are 41 laboratory—confirmed cases, but experts in london estimate the true number is closer to 1,700. iran's supreme leader ayatollah ali khamenei has defended the country's armed forces after it

admitted shooting down a passenger plane by mistake. —— teachers are to sue delta airlines for dumping fuel over their school. it sent children screaming for cover. they say they are concerned about the long—term health impact. it is friday. it is crackerjack, one of the most recognisable beginnings to any children's tv programme. it ran on bbc one from 1959 —198a and ran on bbc one from 1959 — 1984 and was famous ran on bbc one from 1959 —1984 and was famous for its double or drop cabbage game and returned to our screens last night and colin paterson has been for a look behind the scenes. it is friday at six o'clock and it is crackerjack! the time it is on may have changed but little else has. crackerjack is back with

the same mix of games, gags and guns. you host sam and mark showed me around the set. firstly on the job the important thing is wetting yourself time for lunch. and explained why it had returned after 36 years. it isjust such an iconic show, isn't it, so it was like, it was a bit of a no—brainer. show, isn't it, so it was like, it was a bit of a no-brainer. cbbc suggested this to us and i was like an honour. a massive family entertainment show is what we love doing and this texel of the boxes. it set, go. starting in 1959 was hosted by amon andrews. what do you think of the show so far? by the 19705, think of the show so far? by the 1970s, audiences reached 8.5 million. john over there. .. with the co ntesta nts million. john over there. .. with the contestants including the future speak of the house of commonsjohn bercow. in the 80s there was stu

francis. what i remember is it was all about catchphrases. we will try a few. do you know how to push a banana? now on bbc news, our world travelled to the cauca valley, in colombia, to find that farmers are now caught between new criminal gangs with devastating consequences. for yea rs for years i have been reporting on the uk appetite for drugs. i have watched the market flooded by cocaine. i have come to columbia where 70% of the world's came is produced, to find out. a chance to meet cocaine produces 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 here? criminal gangs are killing anyone who stands in the way. those gangs are never far away. armed men have been spotted nearby. i want to discover what is happening 110w i want to discover what is happening now in colombia which is making cocaine in the uk more available thanit cocaine in the uk more available than it has 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 promised, newjobs, new rules, all negating the need for the farc to produce cocaine. but a year after signing

the deal, one and a half billion kilograms of cocaine is produced, the highest ever. i am heading to the highest ever. i am heading to the place where it begins. this rate ta kes the place where it begins. this rate takes me to the main one of the main cocaine producing areas. i am hoping to meet some of the farmers who are growing the coca leaves. billions of dollars have been spent. 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 clu bs these remote areas to the bars and clubs of britain. other criminal organisations and dissident farc have been able to assist control. it has made cocaine production

more efficient. this is the perfect spot to highlight the different gangs trying to revive with control of cocaine. from this valley, one gang, over there, the eln, this side the eln as well. at the bottom, the roads are controlled by another group. after hiking four hours, i arrive at a coca. how old are you? shouldn't you be in school, wouldn't you prefer to be in school? roads would be improved so they

could access markets but of the nearly 100,000 farmers signed up, more than half are still waiting for any help. does it pay well? all of 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 worlds most affect an addict of drugs. a shack is well

hidden. this is where i am told the next stage of the cocaine process happens and i am told it is disgusting. i can assure you, smells awful. ——it certainly smells awful. first, they add limestone, then ammonia. it he is hard to believe that people will snort all these poisons, not to mention the environmental problems it causes. often chemicals are dumped ina it causes. often chemicals are dumped in a

reverse. —— rivers. some armed men have been spotted nearby. it emphasises how dangerous this entire region is. and if the dead of night, the young men return and continue the production process. the incident that made us run turned out to be for members of the gang have been arrested by the army. when we left last night, this was covered in leaves so all those leaves become this. it stinks. the next stage is to allow heat to remove the water and turnit allow heat to remove the water and

turn it into pure cocaine paste. then it is sold to the gangs. they run crystallising labs. and turn this into powder. if you could produce more, you would produce more? lots of people have been killed in colombia because of cocaine. violence is spreading across

colombia. a coca valley has turned into one of the most dangerous regions in the country since the piece deal was signed. this is home to the nasa people. they have been granted the right to rule their ancestral land. they live here, in the hills and mountainsides and this area is to be controlled by the farc. exercising the right meant that for decades nasa suffered under the farc. it seems the piece deal things have got worse because now they are being attacked from all sides. more than 50 were killed last year. the un has described the situation as dire.

he invites me to attend a meeting of some of the victims of the violence but before we send off he insists 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 work in a certain way

towards this circle. under this rock? levels are only with if the drug can reach its full market. these rates are of strategic importance. —— roots because of the reasons this area matters to the criminal gangs is not because of what is grown here... throughout the journey, wilmer is nervous, focusing on each vehicle we pass.

it is an uneven fight and ijust wonder why you did not let them use these roads? the consequences of opposing the gangs soon become very obvious. what happened here? christina was a 30—year—old indigenous leader.

but her bravery made her a target. just ten days before my arrival she was killed. we finally arrived at the village. 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.

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 have been empowered for almost 18 months under the leadership of president evan dickie who has been accused of failing to support the agreement. i got the chance to put the concerns of the nasa people to the peace commission. soa nasa people to the peace commission. so a lot of people in this area believe the recent violence as a direct consequence of this government failing to stand up for the peace deal. they never said that. they told that to me. this agreement was designed to be implemented in 12 years. at

the beginning, we are at the transitional process. so this is not the reason, the reason is not the trafficking, but... no, absolutely. is this an interview? this is being filmed. are you 0k is this an interview? this is being filmed. are you ok with that? yes, but i need to be prepared with that because you are asking me questions... 0k. right. because we we re questions... 0k. right. because we were trying to get an interview with you in bogota next week. were trying to get an interview with you in bogota next weeklj were trying to get an interview with you in bogota next week. i will do that. but the interview never happened. and with that, off went the government officials. a military helicopter. rather than ride the risk of the mountain road. the nasa people have their own blue uniform security guards. cana was one of them. last february, he was part of an unarmed team that recovered these weapons and arrested eight farc dissidents. the incident made

them a target and the father of six was assassinated in front of his wife. wearing this uniform increasingly requires courage. this man survived the ambush that killed acra two. given what you have seen —— this man survived the ambush that killed cristina. given the risks, why do you continue to do this?

the violence is driven by the vast fortune to be made getting cocaine from the mountains to the markets. this northern part of columbia by the caribbean coast is hugely significant for growing bananas —— colombia. 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 which is a key smuggling spot. the shallow waters mean containers are carried by tugboats toa containers are carried by tugboats to a floating port three hours away where large ships will take them on to europe. i am off to meet a man who sent up to one ton of cocaine to europe each month. he is not the only one. dozens of smugglers use the port, working for different groups, but all

paying taxes, access charges to the biggest organised crime group in colombia. how easy is it to transport cocaine out of colombia?

for real? really? 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 have been doing this for six or seven yea rs, been doing this for six or seven years, so you have earned millions during this. —— doing this.

do you take cocaine? why? but others are not so squeamish. colombia's most famous export has never been in greater demand in the uk. before heading to columbia, 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, me 25—year—old lewis. he started taking cocaine as a teenager but was a regular habit is now an occasional hit his friends are doing it. he is keen to know about the origins of the drug and readily agrees

to chat the drug and readily agrees to chat the farmers so we arrange a 6000 mile conversation about cocaine. so you never take cocaine yourselves? smart labs. lads. you feel a buzz, a rush, uplifted. you have plenty of energy. you could stay awake for two or three days on end. yeah, afterwards, you feel terrible, you feel clap the next day. —— clap. i started when i was probably about 19. it is

put in front of us everywhere. i have 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 would be spending £200 easily, 200 pounds, £300 which is your two—month easily, every week. just on cocaine. it has been an eye—opener talk to you both, iam it has been an eye—opener talk to you both, i am shocked by how young you both, i am shocked by how young you both, i am shocked by how young you both are. at 16 years old, no—one should be dealing with such stresses of getting you 12 years in prison getting killed by another rival gang.

thank you. thanks, guys. some areas of colombia are facing a perfect storm. the government has failed the peace process, allowing new murderers gangs to exploit the vacuum. “— new murderers gangs to exploit the vacuum. —— murderous. they 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. so much of the past week — indeed, so much of the year thus far — seems to have been dominated by cloud and wind and rain. at least there was something of a change on friday. it was a bright but really quite showery day for some and, of course, at slightly higher levels in scotland, it has led to a covering of snow. but at last, at last, at last, just in time for the weekend, we can talk about drier and sunnier weather. it's the other face of winter. so there will be some night—time frost and some ice around. and here's the set—up — low pressure still close by to the north of the british isles over the past few hours, and it doesn't look very promising when you look out into the atlantic — a low pressure. but what's this? it's diving away towards biscay! and here, just in time for the weekend to settle things very nicely, a big area of high pressure, and it keeps on doing its stuff, for the most part, into the middle of the forthcoming week as well. so that is a real transformation.

but the weekend will start much colder with a hint of frost about it — something that many of you won't have seen for a good wee while, but at least does mean it's going to be drier and it's going to be sunny as well. yes, there are still showers to be had on this north—westerly wind, most noticeable across the north—eastern quarter of scotland and through the northern isles, and no more the 12, 13 or 14, which is where we've been in places over the past few days. temperatures resolutely there in single figures. and with clear skies persisting under the influence of that area of high pressure, there will be a widespread frost away from the coast as we start sunday. somewhere is going to —4 or —5 — something of that order. but here we go again. a lot of dry, fine, sunny, crisp winter weather. the exception, perhaps this south—westerly, and more cloud just keeping the north—western quarter of scotland that wee bit milder. there, the sunshine tempered by the amount of cloud. but elsewhere, it could be wall—to—wall sunshine. from sunday on into monday, a cold and frosty start

for the southern half of the british isles. the mild air there in place across the north. watch out — there could be more more extensive fog patches for the commute on monday, but essentially, it's much the same sort of fare. the exception — thicker cloud may be just producing the odd spot of rain through the northern and western isles. and as i take you on into the forthcoming week, under the influence of that high pressure, perhaps a subtle change in wind directions mayjust mean that many more of us get some of that mild air, but it will stay dry for most.

this is bbc world news. i'm simon pusey. our top stories: prosecutor turns defender — president trump adds ken starr, the man who sought bill clinton's impeachment, to his team. the us says it will screen passengers from china for symptoms of a new virus that has killed two people and infected many more. chanting chants of "death to america"

as iran's supreme leader defends the military over the accidental shooting down of a ukrainian airlines plane. four teachers in los angeles sue delta airlines after a plane dumped fuel on their school during an emergency landing. and making history — the scottish brothers who've become the fastest trio to row 3000 miles across the atlantic. president trump's impeachment trial will properly get underway on tuesday, and on friday the white house unveiled an all—star roster for its legal team. the defence will include the prosecutor from bill clinton's impeachment, kenn starr, as well as celebrity lawyer alan dershowitz, who's previous high—profile clients include oj simpson and jeffrey epstein.