this is bbc news. i'm ben brown and these are the headlines. turkish police issue more than 100 arrest warrants as part of an investigation into poor building standards after this week's devastating earthquakes which have killed more than 33,000 people in both countries. defying the odds — this ten—year—old girl is one of the latest in a number of survivors to have been pulled out alive from under the rubble of collapsed buildings in turkey after 147 hours. the head of russia's wagner mercenary army claims his fighters have captured a village on the outskirts of bakhmut — a city they've been assaulting for months. a us fighterjet has shot down a mysterious object flying over canada's airspace, making it the third to be destoyed over north america in the last week. bbc chairman richard sharp is accused of making "significant errors ofjudgement" by mps for not declaring his involvement in helping britain's former prime minister,

borisjohnson, secure a loan. you're watching bbc news. now it's time for powering ukraine. russian missiles and drones rain down on ukraine's civilian infrastructure, causing untold damage. it's been happening for months. this is ukraine's energy war, a constant battle for heat and light, with an army of engineers racing to keep the country connected.

for ukrainians, it has been a winter of darkness and uncertainty. how does a country respond when the stakes are so high? if the power system collapses, that would mean the suffering of tens of millions of people during wintertime. we cannot allow that, not on my watch. we follow the teams fighting this war. what the missiles destroy, they rebuild, in places where people are living on the edge.

this power plant in central ukraine has been hit repeatedly. it's a huge place, but this is what well—aimed russian missiles have done to the country's infrastructure. missile fragments litter the place. for security reasons, we have been asked not to identify the plant or its manager. so what happened here?

this is where electricity begins its journey from the power plant to the world outside, the first links in a complex chain. since october, moscow has been working systematically to sever those links, to break the system into pieces, to break the will of the people.

every corner of this huge complex bears the scars. while the threat still exists, not everything will be repaired. millions of people depend on this coal—fired power station, built in the soviet era, its great turbines turning away at the heart of ukraine's sprawling power network.

fantastic machine. the system now generating half as much electricity as it did a year ago. the staff here know they are in russia's sights. ihor is the plant's chief technician, on duty the morning of the first attack. when he arrived here in the main control room, he found a chaotic scene. so the whole power station is run from this room. did all of this get switched off?

it has been weeks since the last attack here, but this morning the alarms keep coming. alarm blares so there's the siren.

we had been expecting it this morning. we have to get out of the turbine hall and head straight for the shelter. incoming missiles have been detected, flying towards ukraine from the south and east. there is time to take cover. on days like these, hours are spent underground. anxious moments as news comes in of a fresh wave of attacks. their colleagues at a power station in the west have taken a direct hit. they know this could have been them, and closer to home, word is spreading of something much worse. across town, the tragedy is unfolding. a missile has struck an apartment building. the rescue effort is frantic.

dozens of people have died here. the missile that did this was huge. designed half a century ago to destroy aircraft carriers. it was almost certainly aimed at the power station. some of russia's attacks are accurate. many are not. russia's assault has brought death and darkness to ukraine's cities. the nights are long and cold, the power cuts frequent. the whole nation plunged into a world of adjustments. for david, not yet two, it is mostly a game. that's how his parents prefer to keep it, especially when sirens wail and missiles fall.

it's 8:30. a power cut is coming. it's time for bed. here we go. yes, yes. there we go, it is 9:20 and a few minutes late but the power cut has begun. after months of this, the fear and the novelty have long gone. this is how millions of ukrainians have learned to spend the evenings — unfazed, organised.

this war on energy is notjust about ukraine's power stations, it's about the entire infrastructure, the grid that keeps this vast country with electricity and heating. and it's that grid that has been hit over and over again since october. we're off down a rather bumpy road see a piece of that grid now. and again, we cannot tell you where it is. this is serhii's substation. the place where he has worked for 30 years. since september, he has watched it be demolished, bit by bit, six separate attacks.

four months ago, he saw a kamikaze drone destroy the control room and his office, knocking the whole substation off—line, cutting power to millions of people. the attackers knew exactly what they were doing. the substation�*s 750 kilovolt transformers won't be easy to replace.

they weigh 300 tons and take months to produce. only three or four countries in the world make them. one of them is russia. ukraine is scouring the globe, looking for substitutes. we are far from this war�*s frontlines but everyone who works here feels like a soldier. in this forest of machinery, there is a quiet, steely determination. do you feel angry? for who?

we travel on south, towards frontline communities under regularfire. ukraine's battalion of engineers racing from one repairjob to the next. speaks ukrainian this happens all the time, volodymyr tells me. we're on our way to a village shelled just last night. the power lines are down, again. the repairs won't take long but the men know they will be back. the battle to keep ukraine connected takes many forms — repairing wires, diverging power, concealing what is and is not working. it's a constant struggle,

fraught with danger. distant explosions in the nearby village, the sound of artillery has the mayor ducking for cover. how long do you think you can carry on living here in this situation? or do people want to leave?

in places where the frontlines have moved, there's other work to do. here, teams are busy reconnecting towns and villages cut off behind russian lines for months. where the army has been, the engineers must follow. speaks ukrainian

fedir is another veteran. his home town is under regular attacks are his wife and grandchildren are living in poland. he is out in the field every day. pylon by pylon, cable by cable, connections are re—established. these are battered places, scarred by recent conflict. fresh graves speak of long, difficult months and long, difficult lives. the engineers wait as emergency teams go ahead, inspecting the ground, looking for discarded weapons.

it's slow, painstaking work. how long do you think it will take to fix everything?

and while the country waits, it simply copes. city streets echoing to the sound of generators. mobile phones lighting the way. life somehow continuing. and a mounting sense that ukraine has, for now, weathered the storm. this battle is finely balanced between russia's ability to inflict damage and ukraine's efforts to repair it, to give people just enough power to get by. those who run the grid have no illusions about the struggles ahead. russians failed to take down our system or to cause big

disturbance in our system. having said that, unfortunately, they are gradually destroying very important items of equipment in our grid which takes time to be restored. and yet, despite all of this damage, as you travel around this country, it becomes obvious that ukraine is not on its knees. we were prepared and we were very resolved to win this particular bout. we have no other way than to win because if we lose, if our system collapses, that would mean suffering of tens of millions of people during wintertime. we cannot allow that. when i am asked this question, i often say, "not on my watch".

and if somebody told me before that our power grid could stand like 1000 missiles and drones and still run and still deliver power to consumers, i would probably not believe it but now, we know that we are resilient and we are much more ready now for the new attacks than we have been on the 10th of october. russia thought it would break ukraine but its campaign isn't working. half the grid may be in tatters, but in helmets and body armour, these men are keeping it alive. the war�*s terrible cost is evident wherever you look. the sacrifices have been immense. but power, the lifeblood of a nation, still reaches

across the land. hello. if you've spent your weekends under cloudy skies and you're hoping for something a little brighter, well, over the next couple of days, i am hopeful that the cloud will break up a little more to give a bit more in the way of sunshine. certainly it's going to stay largely dry and it will feel very mild

for the time of year. but for the rest of today, extensive cloud cover in most places, best chance of breaks in that cloud across the far south west of england, parts of wales, and perhaps most especially in the north east of scotland, but mild highs of 11 or 12 degrees. now, as we head through this evening and tonight, it may well be that the cloud breaks up a little more across parts of the south west, wales, northern england, and up into scotland. most other areas will stay quite cloudy, but if the cloud does break for any length of time, you could just get a touch of frost. most places will see those temperatures staying above freezing. now the week starts with high pressure to the east of us. that's what's keeping things largely dry. this frontal system trying to push in from the west, but it's going to take a while to get here. so, for monday, a mainly fine day, a bit more of a breeze developing. so i think more of that cloud will tend to break up. we should see some spells of sunshine. northern ireland, south west scotland may stay quite cloudy and it is likely that some coastal

parts of east anglia will hold on to some low cloud, some mist and murk. but there's confirmation of a slightly stronger breeze in some places, temperatures 10 to 12 degrees, but if we do get a bit more in the way of sunshine, that is not going to feel too bad at all. now, as we move on into tuesday, we will see this frontal system starting to approach from the atlantic. but as the weather front begins to squeeze in, we will bring a renewed surge of mild air from the south. particularly where you get some shelter from that southerly breeze, tuesday is going to be a very mild day indeed. it could well start off with some fog across parts of east anglia, the southeast. some of that could be slow to clear, but it should. and then for england and wales will see sunny spells. temperatures across parts of north wales, for example, could get to 15 degrees. a bit more cloud for northern ireland and scotland, but here it will also be mild. and then as we move through tuesday night and into wednesday, this weather front finally makes its move, pushing its way eastwards with some outbreaks of rain weakening. all the while behind that, we will see further spells of rain at times, but not all the time

for the end of the week. and it is going to stay very mild by friday. temperatures in the south of 15 or 16 degrees.

welcome to bbc news. we start in turkey and syria where in the last half hour we've leaned that the number of people confirmed dead across both countries after the earthquakes has risen to over 33,000. these are the live pictures from the south of turkey where, as you can see, the rescue operation is continuing. those death toll figures, let's just break them down for you. officials and medics said over 29,500 people had

died in turkey and over 3,500 in syria