-- captions by vitac -- www.vitac.com the u.k. bryce -- braces for possible terror attacks at home. raising the terror threat. and one of three roaring volcanos we have our eye on this hour. we're told kim jong-un meticulously scrutinized every element of this water park. >> a look inside north korea. hello, welcome to our viewers in the u.s. and around the world. i'm natalie allen. we begin in london where concerns about islamic extremism have prompted the british

government to raise its terror alert to severe, the fourth highest of all levels. the concern is that insurgents could return from fighting in the middle east to strike at home. >> we need to tackle that ideology of extremism at home, at root. that means challenging the thinking of extremist ideal logs. >> we are joined live from london with more specifics about the threat and the u.k.'s reaction to it. >> reporter: well, natalie, a lot of tough talk there by prime minister david cameron, but the actual specifics of any threat,

well, very thin indeed. in fact, this terror alert level means that there is a highly, highly probable likelihood of a terror attack. but nevertheless, mr. cameron went on to say that there was no specific intelligent that any attack was imminent. now there has been, of course, great political pressure on mr. cameron to be seen to be doing something. particularly in the light of growing public concern about those 500-plus british jihadys fighting in syria and iraq alongside isis and other jihady groups. and also in light of the video of james foley in which one of the insurgents appeared to have a british accent. that looks to be one of the factors driving this decision now. as far as what it will look like on the streets, we are told that there is going to be an

increased police presence at airports and railways, and we could even see more armed police on the beat, on britain's streets, which is something in britain, that we're not too used to. >> his words, he wasn't kidding around. he said we're in the meddle of a generational struggle of ideology that we will be likely be fighting for decades. what is the reaction from lon n londoners that there is apparently a new enemy? >>. >> reporter: a lot of people are shrugging their shoulders and saying why now because we've known of the threat from radical islam for a number of years now. we've seen home-grown terror attacks on british soil, and we've known about britain's heading off to join these extremist groups in iraq, afghan sc

stan years before that. but some are saying that it's time that we got to grips with radical islam here in britain. some feel there's been a feeling of political correctness and that's why they haven't driven down on the problems at the core of a lot of muslim communities. of course those that are born and bred as muslims are saying maybe this will be another problem for us. maybe police and security forces are going to use any new measures imposed by mr. cameron against us. a lot of these communities feel discriminated against and feel that this could be another thing against them. things like withdrawing passports for british nationals who are heading off to conflict areas of the globe and also possibly putting travel bans on them before they can set off, natalie. >> all right, well, we'll find

out much more next week if he makes these announcement. thank you, carl pithall. authorities are not aware of any specific credible threat on u.s. soil. here's cnn's rene marsh. >> reporter: as britain raises its terror threat level to severe, the u.s. says it's working to track foreign fighters who travel in and out of syria. and the u.s. is continuing enhanced aviation security measures at overseas airports with direct flights to the u.s. >> we now have to make sure our mobile phones, laptops, they can see that it's charged. >> reporter: since this summer, fliers from middle east and european airports bound for the united states have had to power up all electronic devices to prove they weren't explosives. intelligence had suggested that

terrorist were developing more sophisticated bombs to avoid airport screening. in the u.k. today, a clear sign that they are worried about foreign fighters returning. >> we are stopping suspects from traveling by seizing passports. we're depriving people of citizenship. >> reporter: the u.s. is striking a similar tone after two americans were killed fighting for isis in syria this week. >> we have the prerogative at the state department in kwoord nation with law enforcement authorities to revoke passports when it comes to a point where someone is working with a terrorist organization or posing a threat to the american public. >> reporter: no fly lists are updated and sent to tsa in real team as threats develop, but it's not a perfect system.

moaner moham moaner mohamed abu sal law was not to be seen again until he blew himself up in a suicide attack in syria. >> we know there are going to be questions. the real concern is the sleeper cell, somebody is under the radar. >> reporter: the 14 million americans taking to the sky this weekend may see heightened security already in place because of the busy labor day travel. but more security is being considered, and not all. of it will be visible. >> i don't anticipate there is a change to that level. >> reporter: the u.s. no longer uses a color-coded threat system. they stopped that in 2011 because it was confusing. rene marsh, cnn, washington.

u.s. secretary of state john kerry is urging a global coordinated effort to defeat isis. in a column, kerry says no decent country can support the horrors perpetrated by isis, and no civilized country should shirk its responsibility to help stamp out this disease. kerry writes that coalition building is hard work but extremists like isis can only be defeated when responsible nations and their peoples unite to oppose them. well, the u.s. military has shed more light on its operations against isis in iraq. the pentagon said friday american forces have carried out 110 air strikes since august 8. that includes missions conducted that same day on isis fighters near the mosul dam. meantime another migfight is un way in iraq.

let's go live to baghdad. i believe we're talking about fallujah? >> reporter: natalie, if you recall back in january, this was the first city to fall to militants, but since then they have been bombarding it on a daily basis. air strikes and what some rights groups say is the use of barrel bombs. these are claims that the iraqi government categorically denies, says it's not true, not targeting its own people the way it's targeting what they call these terror groups inside fallujah, but they are paying the price for this battle between the armed groups, between isis and the iraqi government. as a result of this shelling,

we're told yesterday 18 people were killed and 75 were wounded. extensive damage to people's homes. and over the past few months we've seen thousands of families flee this bombardment that happens on a daily basis. this shelling. and the government insists that it's not doing so, but we see images like what came out of fallujah yesterday where people are paying the price. president obama would hear the administration urging the iraqi government, the shia led government here to reach out to the sunnis, to try really hard to regain their trust after all these years of what sunnis feel marginalization and persecution by security forces. images like these, what is going on in fallujah shows that there is little being done to win the hearts and minds of sunnis at a time like this. instead, it seems to be

increasing those sectarian rifts. >> with all of this fighting swirling around baghdad and the world now just condemning isis and its goals and its tactics, of course, what, certainly, the people of baghdad are quite hardened because they've been through so much for so many years. but what is the mood there? >> reporter: it's always tense in baghdad. people always say when it's quiet, it's the calm before the storm. they're worried about what may come. it's always the resilience of the iraqi people that's striking. it's how this violence has become a fact of life. and just a few days ago we visited a mall in baghdad, and here's what we found. this is hardly the image that comes to mind when you think of baghdad, but over the years entertainment centers like this

one have opened up in the capital, providing people with sort of an escape from their daily lives. most in baghdad live with a few hours of electricity per day. some are here because being at home is just unbearable. and the mall has power. but most are here because -- >> it's a place which people can comfort themselves because of the conditions of the terrorists. >> we want to have fun here in iraq, you can just visit this place. nothing, and there's no other places. you know, little safe here. >> reporter: safety in baghdad is relative. even the mall has been targeted. a few months ago, a car bomb was detonated. >> if we explain the situation here, we would lose hope and get

desperate. life must go on. >> reporter: for iraqis, violence has become a fact of life. the fear is of the unknown. >> translator: when my husband goes to work, until he comes back i live in fear. i pray he does come back. >> reporter: and natalie, while this mall provides people with a venue of normalcy, normal has really taken a whole new definition in iraq over the past ten years. people in the mall we spoke to said they really fear what the future may bring, even if it's as soon as they walk outside the mall. >> they still understand there's no concept of normalcy after all they've been through and now this. still ahead, russnato warps

russia to say out of ukraine. but is anybody listening? plus the latest from iceland where a volcano is erupting. we'll tell you where alerts stand right now.

take a look at smoke rising on friday from a volcano in iceland. officials say it has not produced any significant ash products. that's good. as a result, the aviation warning has been lowered from red to orange. all airports are open as well. and it's not the only volcano we're watching. how many? >> four. japan just got involved. so we'll start with iceland and work our way through the volcanos here and eventually we'll do some weather, too, in the next half hour. but for now we're in volcano mode here and start in iceland. and this would not be getting

that much attention if we had not had the event four years ago which, of course, paralyzed european airspace. that is not happening now because we have a different kind of eruption. we are now back to orange, which is good. red is the bad one. that is when we're talking about imminent eruption and air delays. alert level, back to orange. we were under alert on friday because what we had was an eruption but a fissure eruption. we're going to continue to monitor that volcano. but it looks pretty quiet right now as i've been watching it. but as we fly you close to the equator, what we're looking at is the papua, new guinea volcano. it's way more impressive than in iceland. this is down further south. no glaciers here. and we don't have to worry about a widespread air travel

situation. but look at that. can you imagine watching that out your window? a lot of people were, and they were sending the pictures along with it. there you see some incredible images. and behind me, some more spectacular images. look at this one here. that is just, look at that with the sun there, postcard perfect, but scary stuff as well. of course, if you are if you live anywhere near by, and they've been evacuating some folks. this one has caused air traffic disruptions, because we're involving indonesia as well as some delays as well. although most of the activity has been across papua, new guinea. the pilots will certainly be aware of this. but unlike iceland, we don't have the danger of the jet stream picking this up because subtropical jet's to the south. and to the north, what we'll have is just this ash disbursed

over the region, and that is just fine with us. and then we have this other volcano here, mayon, which is an alert. this is an alert two here. so we're watching this one for potential eruption. we do have a lot of people living around here, 182,000 to be specific. and the japan one, which we'll get to at some point as well. >> i don't remember when we've had so many volcanos. >> it's almost volcano season. incredible. >> thank you, ivan. the skies could get a lot more crowded if google gets its way. google is the latest company to bet big on drone delivery. the search engine is looking for new engines of growth. >> reporter: hear that? it's the building buzz of potential business by drone. >> can i order some dog food for

my dogs, please? >> reporter: and now, google has announced its latest aspiration, a drone delivery service for anything from dog streets to first aid kits. >> project wing aspires to take another big chunk out of the friction of moving things around. >> reporter: moving things around, mainly products to paying customers, is something google is looking to streamline. it may seem like a strange move for google which has built its empire around searches and maps. >> they want all these little pieces working on your behalf. >> reporter: goolgle is no strapgser to expansion, like the driverless car prototype. google wants to transform the world, quickly delivering medical supplies and other goods to people in hard-to-reach

services. >> the post office changed society. fedex changed society. so don't we think that being able to get you a package in two minutes would also change society? >> reporter: this time google is already a bit behind. amazon introduced their prototype last december. and dominoes pizza tried their own in 2013. the coast guard already uses them for surveillance of ice sheets in alaska. and they have been used to survey the damage after an earthquake struck napa, california. technical and safety issues have to be addressed first. they want to fully integrate drones into the national airspace by september 2015.

cnn, washington. >> and ahead here. fresh claims of large-scale russian incursions ukraine. we'll go live to kiev when we come back. . it's one of the fastest growing crimes in america. there's a new victim of identity theft every three seconds. makes you wonder -- "am i next?" one weak password could be all it takes -- or trusting someone you shouldn't. over 70 million records with personal information were compromised in recent security breaches. you think checking your credit cards or credit report protects you? of course, lifelock can do that for you. but lifelock also helps protect you from more serious fraud, like attempts to get a mortgage in your name. take over your bank accounts, or even drain your investment accounts. lifelock offers the most comprehensive identity theft protection available. alerting you to threats by text, phone or email. ♪

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call the number on your screen or go to lifelock.com/easy. ♪ a british government source says there are 4,000 to 5,000 russian troops inside ukraine with 20,000 more massed along the border. that figure is far higher than the u.s. estimate of just 1,000. and these satellite images are said to show russian equipment in ukraine as well. nato secretary-general spoke about that friday. >> despite moscow's hollow denials, it is now clear that russian troops and equipment have illegally crossed the border into eastern and

southeastern ukraine. >> well, now russia says those satellite images are really pick it tours from a video game. president vladimir putin is suggesting russia is not a nation to be trifled with. >> translator: i want to remind you that russia is one of the most powerful nuclear powers. it's not words. it's reality. and more over, we are strengthening our nuclear force, strengthening our armed forces m they are definitely more compact and more effective. they really are more modern. >> we're covering all these developments. we're joined from kiev. and vladimir putin is certainly turning up the heat. of course they deny it, but with troops, apparently, and with his words. >> reporter: yeah, natalie. i think both sides turning up the heat with the rhetoric here in kiev as well as moscow.

we've seen a lot of turning points in this conflict. and you get the sense we're in the middle of another potential turning point. and where this conflict goes from here depends a lot on what happens today and the coming days. not just on the battlefield but politically and diplomatically. let's update you on all those fronts, starting on the battlefield. we're continuing to watch very closely allegations and accusations coming from kiev, now from the u.k. that the russians have sent troops, heavy artillery, armored trucks into the ukraine. it's important to point out that it's impossible at this point for cnn to independently var pie that that's the case. and overnight friday into today we didn't see any activity that would suggest indeed there is a full-scale invasion by the russians into ukraine. we're also watching closely to see if indeed pro-russian

rebels, seb rattists are going to make a move on the all important city of mariopol. if they indeed continue to push west and take territory towards crimea, that would suggest that the russians are indeed looking to create some sort of land link between the russian border and the crimean peninsula, an area that they annexed several months ago. we should point out overnight into today, no activity that suggests there is an incursion into mariopl. today all eyes on brussels where eu representatives are meeting to discuss the crisis in ukraine. there's no indication that three will be announcing sanctions.

but certainly after the allegations of an incursion, you're hearing more representatives saying that sanctions are the path to go. so a lot happening in kiev, southeastern ukraine. we'll be watching closely. we'll keep an eye out on brussels as well. a lot happening today, natalie. >> yes, much to keep up with. well, the threat from isis prompts britain to raise its terror alert level. and up next, we'll see why the oust is not yet ready to follow along. also ebola spreads to yet another african nation. a doctor answers your questions about this deadly disease coming next.

our top stories this hour, britain has raised else terror threat to severe. isis extremists pose the greatest security threat britain has ever faced. still britain's home secretary says there's no intelligence that an attack is imminent. nicaragua has announced the rescue of miners. no word yet on at least five other workers that remain unaccounted for. a british government source says russia has deployed between 4,000 and 5,000 troops into ukraine. reports say satellite images

show there are also some 20,000 troops on the other side of the border. russia says it hasn't sent any troops into ukraine. more on our top story, the british government says isis is forcing it to raise its terror alert level so severe. but the u.s. apparently has no plans to follow suit. barbara starr has more. >> reporter: two leaders with very different public messages on isis. british prime minister david cameron announcing the threat level is raised to severe in the u.k. >> this is not some foreign conflict thousands of miles from home that we can hope to ignore. >> i don't want to put the cart before the horse. we don't have a strategy yet. >> reporter: president obama not ready to commit to fighting isis with air strikes in syria. but britain clearly feeling the pressure that isis could strike at home. the new warning means an attack

is highly likely. >> the ambition to create an extremist caliphate in the heart of iraq and syria is a threat to our own security here in the u.k. >> reporter: particularly worried, because it was a british voice on the tape showing the murder of american journalist james foley. an estimated 500 people have traveled from britain to fight in syria and iraq along with hundreds of other europeans. u.s. and european security services believe isis fighters are back at several locations in europe, but those cells may not be under direct isis orders. officials won't say where the cells are. u.s. officials say they don't believe there's a cell in this country but are tracking about a dozen americans fighting for isis overseas. just this week two american isis mighters were believed killed in syria. >> i think our european allies feel a greater sense of urgency.

i think they feel as if the threat is closer to home right now. and for us, it's more of a distant issue. >> reporter: for now, the u.s. plans no changes. the department of homeland security says it's unaware of any specific, credible threat from isis. some analysts say, however, this is not the time to sit around and wait for an inevitable attack. >> we need to understand that this is a threat now, to our homeland. and we have to start designing a game plan to defeat them as quickly as possible. >> reporter: u.s. law enforcement will tell you one of the biggest threats is the so-called lone wolf attacks. it is one of the most difficult threats to detect. let's talk more about the threat from isis. joining me from france is our

guest. you are a fixture here at cnn with your analysis. we thank you for joining us yet again. what do you think about hearing about this threat that the u.k. is taking very seriously, and their reaction to it? >> well, first of all, obviously, the british authorities have specific information about a terrorist plot by isis to attack the homeland. this is recent. i don't think the british government would have said what it did without having basic intelligence. but the plot itself relates to british men who have been fighting with isis in syria and iraq for the last three years. you have 500 british men. and some of them, obviously, have either returned or plan to return and carry out attacks in the united kingdom. so this is very serious, even though the threat is not

imminent, the british government says it's highly probable and it wants to make sure that the public is vigilant. and also if i were the british government, this is part of the task. you want to let the plotters know that the british government and society is vigilant. >> it seems a few days ago we were talking about whether isis would ever be a threat to the west. and here we are at this moment. this group that has come on so fierce and so strong, so fast is focused on building that caliphate in the middle east. why the emphasis to turn back to the west now? just because they can? >> you're asking a very, very critical question, really. i'm not trying to basically be patronizing. i think what your viewers should know is that the key target of the isis or the islamic state is the near enemy, near enemy as opposed to the far enemy.

that is local governments in syria, iraq, jordan, saudi arabia. the islamic state or isis, unlike the parent organization, the al qaeda, yoe sbin laden. most of these attacks have been in neighboring countries. the islamic state threat basically is on middle east societies and thousands of people have been killed by its attacks. now we're facing a different, basically landscape. you might say why. first of all, because i think the united states and european governments are planning to join the fight in iraq and syria to stop the advances of isis, point one. the united states in the last pew weeks has been attacking the islamic state in iraq and has done a great deal of damage to the islamic state, and also some

of the fighters who are fighting with the islamic state number about 2,000. we estimate there are about 2,000 european and western fighters, extremists who are fighting with isis or the islamic state. so for a variety of reasons, my take is that if the west joins the fight against the islamic state as it seems to be the case in the next few weeks and next few months, you go to see the islamic state changing its target tactics and beginning the process of carrying out, trying to carry out attacks against european and american targets, even though the united states is a much harder target for isis than european societies and european governments. >> yes, so you say eventually the u.s. will join in and probably push back isis there in iraq and syria, but so far president obama seems to be pushing that aside and pointing to the regional powers to take

the lead here. why do you think there is hesitation from him so far? >> because for a simple reason. that american air power, western air power cannot defeat isis or theis all wi islamic state on t. the islamic state now controls more than 35% of syrian territories, more than 35% of iraqi territories. in order to defeat isis or the islamic state, you need to create a broadly-based coalition. of local communities, regional powers, international society in order, and not only to stop the advances of the islamic state, but drawback this terrorist organization. what i'm trying to say is that the united states and barack obama is absolutely correct. the only people who can defeat the islamic state are syrians,

iraqis and muslims. it has to be joined by local communities in the same way iraqis defeated al qaeda in iraq in 2006 and 2007 because iraq took on and defeated al qaeda in iraq. they must defeat this particular, i mean, it's a social epidemic in the region. >> do you think they will? >> oh, i have no doubt in my mind now. now what you are really seeing throughout the region, even rival regional powers, like saudi arabia and iran are joining ranks in order to fight the islamic state. there is a broad understanding that the islamic state represents an existential threat, think of what it has done in the last year or so in

terms of the massive, massacres, bury children alive, beheadings, stoning, crucifixion. what they are trying to do is establish an organization that even the taliban, it gives the taliban a moderate name, that the taliban seems to be moderate in relation to isis or the islamic state. >> it certainly is something that the world has got their focus on and for good reason. thank you so much. as always, we appreciate your time. thank you. as we continue to track the progress of the ebola outbreak, it's left many viewers with a lot of questions. up next, here, we'll be joined by a doctor who will address some of your biggest concerns about the e bbola virus.

well, it's exactly the news that many people fear, that ebola would spread to yet another west african country and it has. now senegal is confirming its first case. it's a 21 year old university student from guinea. that's one of three countries hardest hit by the virus. senegal closed its border with guinea august 21. but the world health organization says closing borders or banning flights is not a good way to fight ebola, saying it ice lates those countries, making it difficult to provide them with help. there have been more than 1500 suspected deaths from ebola, and more than 3,000 cases of the virus since the outbreak began in march. the experimental drug z map has

been given to patients with mixed results. dr. brantley recovered. it's not clear whether z map cured him. nancy writebol also received z map and has recovered. but others have died. dr. jay markey was on the team that successfully treated the two americans. this week we've been asking him your questions about the ebola outbreak. >> the short answer is that we hope to learn a lot. i think we have to sort of temper our expectations about any sudden breakthrough. this is going to take some time. but absolutely. i think anytime somebody survives the ebola virus, there's something to learn from

that. and we hope to learn from these two patients. >> next question, can you answer why some people still die after taking zmapp? >> that's a really good question. the take home question is that zmapp is an experimental drug. we don't have data to know how safe it is. we don't have data to know how effective it is. to really understand a drug, you need to have well done, large, randomized control trials, which we don't have. so at this stage, we have two patients that initiated treatment with zmapp even before they arrived at emory. yes, they survived. but we have nothing to show whether zmapp helped their recovery or slowed their recovery. that is unfortunately going to take time to determine. >> with that, i put the question to you that somebody else sent, marilyn sent on the side effects

of z map. are you able to answer that question? >> no. that's the first step in doing the safety studies and understanding that. with two patients it's really kind of impossible to determine whether the side effects are from the drug or somebody sick with ebola virus. it's safe to say with any drug, the things you'd monitor would be allergic reactions and other signs that the body itself is reacting to the drug. but at this stage there's no way to draw any conclusions about the drug that these patients received. >> there have been numerous outbreaks before in africa, so i don't know whether you can answer the question on the basis of writebol and brantly. but if you survive ebola, do you develop a life-long immunity to the dissnees. >> that's a good question. they develop a very robust response to that strain of virus. and those antibodies that probably are the key to recovering from the infection

can last upwards of ten years. >> ten years? >> yes. now what isn't totally understood is whether those antibodies protect you against other strains of ebola virus. there are five. there might be some cross protection, but we're not sure. but at this stage, i think we are quite confident that the patients themselves are recovered and likely are protected against this strain of ebola virus. >> as you talk about protection it leads me to my next question. they ask this. how protective is the protective gear that health workers are wearing out in the field in these hot zones, if you will. >> it's very protective. you know, at emory, we went above and beyond what was likely necessary because of the infrastructure that we had. but the cdc has been very clear about this. that really any u.s. hospital that follows cdc guidelines in

terms of personal protective equipment should be able to manage an ebola virus patient and keep them contained. they have a track record where none of their records where in 30 years of battling this virus have actually contracted the virus. i think the take home message as you've been reporting extensively, battling this virus in resourceless areas like africa is a challenge. here in the united states, we have the ability to do what every day icu nurses do on a daily basis. >> enlightening interview there. still ahead, north korea opens its doors to host a wrestling tournament. and ahead of that, cnn gets rare access to parts of pyongyang, a place many of us know very little about. that's in a moment.

welcome back. this update for you from nicaragua. 20 miners trapped there are now out. the nation's first lady thanked crews for what she called a miraculous rescue. an effort to get the miners out had been ongoing since the gold and silver mine partially collapsed thursday. however, no word on at least five other miners unaccounted for still. heavy rains and flooding continue for parts of asia. meteorologist ivan cabrera, i

believe this story has been ongoing for -- >> months. >> weeks. >> months. the last few weeks have been te particularly difficult for these regions. china has been involved, korean peninsula, but japan is no stranger to the heavy wonder and another round of heavy rain just rolled through. look at the explosive system that rolled through myanmar, india, into parts of bangladesh as well. so we'll talk about these totals. they have been impressive, just in the last 24 hours, between 80 and 108 millimeters of rainfall. no depressions here or tropical cyclones. it's just a lot of tropical moisture available. you get the heating of the day, and things just start going. and the rain tallies have been similar day in and day out. so we have not had time to allow the waters that have technically

caused flash flooding to recede there. so we continue to see super saturation across northeast asia with more rain on the way over the next couple days. and that is going to be ongoing. as far as the bigger picture in the tropics this time of year, we're usually tracking something. and right now, nothing out there. it's been a while sense we've been tracking a cyclone, and that's just fine with us. west pacific tropics remaining quiet. we'll monitor persistent areas of thunderstorms. but right now upper level winds just not favorable. although philippines, nothing organized but just very heavy rainfall. let's spin the globe and take you to the united states where it's a big holiday weekend here. rainfall is going to make conditions difficult to barbecue across the south central u.s. scattered showers mainly to the east, but guaranteed nice weather is going to be in the west. although the bulls eye for nasty

stuff is north central and northwestern gulf coast for the entire maybe day weekend. so if you are planning a beach forecast, i'll get out of the way and take a gander. nantuck nantucket, oh, come on. upper 60s. oh, it's nice. but they would like it a little bit milder, and what's coming is colder weather. it's the end of the summer for them, but nice and toasty in the south. so you'll be able to hang out. just use your spf and you'll be in good shape. >> i don't see cnn center beach. >> yeah. >> we're working, man. well, invitations to one of the world's most secretive countries doesn't come very often. we're talking about north korea. so when our will ripley got the opportunity to travel there for an international wrestling tournament, he headed to pyongyang. here's will's report. >> reporter: the moment we land

in north korea it feels like we're walking into a time warp. a nation decades behind the developed world, trying to catch up and trying even harder to control the flow of information. from the route we take to the pictures we take. government minders are watching our every move. they control what we see and what we don't see. our first stop, the birthplace of the nation's founder. a man they call their eternal president. everyone who comes here will visit this place at least once. coming here is a pilgrimage. these students traveled 23 hours to drink from this well. he comes from a rural area in the far north, a far cry from the capital, the showpiece of the nation. this is the most modern children's hospital in the entire country. took about a year to build. opened up six months ago.

and it's not just the medical equipment that's state-of-the-art. kids pretend to be sick just to use the playground. there are 300 beds in this hospital in a city of 2.5 million people. it's one of the pet projects of kim jong-un. another prize project, the massive water park, finished in just nine months. we're told kim jong-un meticulously scrutinized every detail of this water park. he examined the plans personally, we're told, 113 times and even had his high ranking government officials test out those water slides to make sure they were safe. as these people play, the united nations worries others are suffering. the world food program says many face regular food shortages. you wouldn't know it with all the money spent on projects like this. here no expense is spared to put

a modern, happy face on pyongyang. the rest of north korea is kept hidden from our cameras and the eyes of the outside world. will ripley, pyongyang, north korea. >> yes, always a tightly-scripted visit when journalists travel to north korea. you can see and read more from will's trip on our website, including that swimsuit fashion going on there in pyongyang and even haircut styles for men. if you look closely there in the center, number seven is most popular. you can fall it all on cnn.com/internation cnn.com/international.

the uk raises the terror alert over what isis militants might bring home. what u.s. secretary of state john kerry says needs to happen to stop isis. vladimir putin reminds of the military strength as they push to become a member of nato. we'll bring you all the details of a mine collapse. hello and welcome to our viewers in the united states and around the world. i'm isa