than 100 billion times a day. in 2017, facebook and instagram were taking down 35,000 posts a day about self— harm and suicide alone. so, this is regulation not at a minor scale, but at an industrial scale. while there's criticism about whether the plans go far enough, they will mean a revolution in how the online world is policed. katie prescott, bbc news. now on bbc news... attempts at diplomacy are continuing in an effort to alleviate the crisis over ukraine. but while the focus has been on the donbas region in the east, anotherfront is potentially building up. the bbc�*s gabriel gatehouse has this report on ukraine's northern border with belarus.

but it could still be some situation. we will fight. if you want peace, you should be prepared for the war. the border with belarus stretches for over a thousand kilometres. all along this northern frontier the men and women of ukraine's border guard are getting ready.

they may be called upon to be this country's first line of defence. the enemy is not belarus, but somewhere beyond this barbed wire fence. russia has deployed its forces on belarusian territory, artillery and fighterjets, tanks and rocket systems. this right here is a highly strategic spot because up that road about an hour away are the russian forces. thousands of troops, hundreds of tanks and down that road is kyiv. it's pretty much a straight paved road all the way to the capital. the thought of russian tanks rolling down this road evokes the spectre of conflict on a terrifying scale.

washington and london have warned an invasion could be imminent. moscow calls that hysteria, while at the same time pumping out pictures of military hardware making its way into belarus. their troops welcomed with a traditional greeting of bread and salt. this current crisis really began in 2014, when protesters occupied the centre of kyiv. they wanted to set their country on a course towards european integration when security forces loyal to the then pro—russian president opened fire. gunfire. it ended in a massacre and the overthrow of moscow's power. russia responded — it annexed crimea, which had been part of ukraine since soviet times —

and sent troops to support a separatist rebellion in the eastern donbas region, that conflict has continued ever since, despite a ceasefire agreement between the two sides. in kyiv today, there's a strange feeling of unreality about the looming threat from russia. people here are used to war. there's been fighting in the east for nearly eight years. and yet the authorities have been playing down the current threat, saying the russians do not currently have enough forces in place for a full scale invasion. but a former ukrainian deputy defence minister who still advises the government told me the build—up of troops on the belarusian border was concerning. so what we prognose as the most plausible scenarios, this is the attempt to isolate kyiv, to have an operation like a surround in kyiv

and don't let the ukrainian government to actually to operate and to manage the country in these situations. and this operation requires less forces and is possible because of the now exercises in belarussia when they have more russian troops in belarussia. the russians aren't the only ones showing off their military hardware. last week, we travelled to the far west of ukraine to see ukrainian forces trying out some new weaponry — shoulder—held anti—tank missiles provided by the uk. also there, a small contingent of british forces. how many of you are there? so the training team is ranging between eight to nine individuals... ..who wanted to be filmed

but didn't want to talk. these were exercises. the brits were here for training purposes. western countries have made it clear in the event of a direct confrontation with russian forces, nato won't be sending its soldiers to fight. we are proud that we are ukrainian soldiers. are ukrainian officers. we are proud that we we have such kind of support and help, and we will do everything possible to defend our country. for now, this is a war not of tanks and bombs, but of images and of words fought between russia and its traditional nato foe, with ukrainians stuck in the middle. nowhere is the tension between east and west felt more keenly than in lviv. over the past century, control of this city has passed from the austro—hungarian empire to poland to nazi

germany, then to the soviet union and now independent ukraine. in the basement of a residential block they're preparing a bomb shelter — one of thousands across the city. in the 19805 oleg served in afghanistan alongside russian and other soviet soldiers. now he faces the prospect of fighting against his former brothers in arms.

if russia does mount an invasion, the chances of it sending forces this far west are vanishingly small. but lviv is in a combative mood. the mayor told me he wanted every man and woman here to be capable of handling a gun. for decades, this city has been one of the centres of ukrainian national identity, an identity that has been defined in opposition to moscow. in the garrison church of saints peter and paul, they have a shrine dedicated to those sons of lviv who've been killed fighting russian—backed forces in donbas.

this priest spends much of his time travelling to the east. yeah, that's someone�*s water bottle that's obviously been hit by shrapnel. ministering to those on the front lines of a war that is already eight years old. do you worry that this conflict is entering a new and more dangerous phase now?

on one level, this conflict is about geopolitical power. putin fears ukraine falling further out of russia's orbit. but geography and identity are important too. the deep connection between ukraine and russia goes back much further than their shared soviet past. it was here a thousand years ago in kyiv, in this stretch of river that prince volodimir baptised his people, an act that led to the founding of the russian orthodox church. and the further north and east you travel,

the more likely you are to meet ukrainians who, despite everything, have a sense of their connection to russia through shared bonds of history and of faith. singing. back near the belarusian border is the chapel of st basil the great. here they have a shrine not to the fallen of donbas. the last tsar of russia. the emperor nicholas ii visited here in 1911, six years before he was overthrown and then executed by the bolsheviks. since the end of communism, the russian orthodox church has functioned notjust as a source

of spiritual authority, but as an instrument of russian soft power. the image of ukraine as a chaotic failing state is part of the kremlin�*s playbook. it's a message designed both for domestic russian consumption — don't flirt with the west — but also part of moscow's pr campaign.

this propaganda war has been going on for years. the more urgent question is, could that develop into a full scale actual war? the point of highest danger will come in the next few weeks, says ukraine's former deputy defence minister. 20th of february is a very interesting day, this is the last day of the olympic games and this is the last day of the exercises in russia at the end of february, they will be more ready from the point of view of capabilities. they will be ready mentally from the point of view of olympics. they will have maximum forces concentration in belarussia. if the russians do invade from the north, they'll quite likely pass through this strange, deserted area right

on the belarusian border. it was in the dying days of the soviet union that people suddenly abandoned their homes here after an explosion at a nuclear power plant. chernobyl. the very word became synonymous with the callous incompetence of a sclerotic regime after moscow tried to cover up the accident. what happened here 35 years ago contributed to the collapse of the soviet union, and ukraine splitting off and becoming an independent country. and now, even though it's so eerily quiet, it feels like this place is on the front line again.

the whole area around chernobyl is now a closed zone, a place where the clock stopped 35 years ago. a time when ukraine was still shackled to its more powerful neighbour. the abandoned railway station. this man was three years old when the reactor exploded. he and his parents were eventually evacuated. now, as he contemplates the possibility of a russian invasion, he's the father of two young children himself.

ukraine and russia are two countries divided by a common history. that is the fundamental tension, and it'll continue to fuel this crisis whatever happens in the next few dangerous weeks.

hello there. the rain is pushing southward, the snow is returning to the north. with a real risk of some quite significant snow through the remainder of the night and the start of sunday. our weather front slowly meandering south bringing that milder, wetter and windier weather. quite a contrast as we go towards dawn. the prospect of several centimetres of snow piling up over the hills of scotland and even a few centimetres at lower levels, blowing around in those strong to gale force winds. of course with that, temperatures close to freezing as well. blizzards in places, in contrast, the rain is quite heavy, pushing its way further southwards across england and wales with a relatively mild in contrast, in fact, temperatures more akin to what they would be in the daytime at this time of year. so we've got that north south split during the morning strong winds throughout, blowing that rain away we think by the end of the morning for most parts, certainly the heavier rain.

but a strong wind blowing that rain away we think by the end of the morning for most parts, certainly the heavier rain. but he could linger in southern and western areas, still that strong wind, potentially gales through the channel by the north and west a lot of wintry showers following him behind with hail and thunder as well as sleet and snow. a blustery day throughout which will accentuate the chill. in fact, we've got that cold, arctic air with us. these are temperatures to start the day, they will dip away as the day goes on across the southern half of the country. we are into the cold airagain on sunday but it doesn't last long. i think we will have quite a chilly night here under the starry skies. temperatures will fall away and we are more likely to see a frost quite widely by the time we get to monday morning. this is monday morning. further north and west, we've got the cloud gathering once again and the rain, our next weather front toppling in. doesn't look as if it will give us significant rain because the high—pressure building towards the south. but that weather front here in the northwest at least on monday will give us fairly wet weather. so, let's watch the

progress of that as it topples into the day. brightness and sunshine further south and east and a relatively mild day in contrast once again a real topsy—turvy with our temperatures as we've seen throughout the week and that continues into the start of next week. high pressure will start to build through. i think we will be having a lot of cloud around through the day on tuesday and indeed into wednesday but still a lot of dry and settled weather to end the week. as ever, the warnings are on the website. this is bbc news, the headlines: the queen has announced she wants camilla, the duchess of cornwall, to be known as queen consort when her eldest son, prince charles, becomes king. she expressed what she called her "sincere wish" in a message to mark the 70th anniversary of her reign. a five—year—old boy in morocco who fell down a well on tuesday has died, following a huge rescue effort. he was finally pulled

from the 30—metre—deep shaft but his death was later confirmed by king mohammed — who passed on his condolences to the boy's parents. madagascar has been struck by a powerful storm for the second time in weeks. cyclone batsirai has brought heavy rain and sustained winds of one—hundred—and—seventy kilometres an hour. thousands of people have been moved to temporary shelters. last month, storm ana caused devastation and dozens of deaths. now on bbc news: it's time for dateline london. hello and welcome to dateline london.

i'm ben brown and this week we pay tribute to one