Image source, Reuters

Macron has moved on to warning about a looming food crisis - Ukraine and Russia are both major exporters of staple foods but production has been severely disrupted by the war.

He says some countries, including some of those in the Middle East and North Africa, are particularly dependent on Ukrainian and Russian exports.

The situation will be even worse in a year to 18 months, he says, as Ukrainian farmers are unable to sow new crops.

He calls for Western countries and international organisations to mobilise against the coming crisis.

Macron says Western powers are ready to ramp up sanctions against Russia if necessary, as they continue to try to force a ceasefire.

"These sanctions have an impact and are tangible and we must continue them for their dissuasive effect," he says.

Image source, Reuters

Following the Nato meeting earlier, French President Emmanuel Macron has been speaking - he says Russia is increasingly isolated on the world stage.

He says it is vital to avoid escalation of the conflict and that is why Nato has made the decision to support Ukraine without itself waging war against Russia.

Nato is also reviewing its strategic positioning as a result of the war, he says.

Macron has long advocated for greater European defence capacity and he returns to this theme, saying that Europe should "shoulder its responsibilities".

But, he says, this capacity would demonstrate that Europe was an active part of Nato rather than something that replaces it.

The UN General Assembly has adopted a new non-binding resolution that is demanding an "immediate" stop to Russia's war in Ukraine.

The resolution also calls for aid access and civilian protection in Ukraine, and criticises Russia for creating a "dire" humanitarian situation after Moscow invaded its neighbour one month ago.

In the vote at the UN's headquarters in New York, 140 countries voted in favour and 38 abstained.

Five countries voted against the measure - Russia, Syria, North Korean, Eritrea and Belarus.

It follows a resolution on 2 March that similarly demanded Russia immediately cease its use of force.

Yana is one of about a million Ukrainian children who have fled to Poland since the war began.

Children account for half of the more than two million refugees in the country.

The 10-year-old started school in Warsaw just three weeks ago and has already made a new best friend, Alicja.

There are already 60 Ukrainian refugee students in the school, and many more are expected to arrive.

Image source, Channel One

A month after Russia invaded Ukraine, some of the scenes of devastation in the country have been finding their way onto Russian TV screens – including drone footage from the besieged southern city Mariupol.

But instead of reporting that the buildings had been destroyed by weeks of Russian shelling and missile strikes, Russia's Channel One instead claimed Ukrainian "nationalists" were responsible.

"These are sad images of course. A chilling picture. In their retreat the nationalists are trying to raze it to the ground," said Olesya Loseva, host of a daily current affairs talk show.

"These are residential areas, houses. We can even see smoke somewhere there," she added, while her co-host said: "One cannot watch this calmly."

Russian officials and media have consistently claimed that Ukrainian forces are carrying out attacks on their own cities.

Earlier this month Russian TV insisted Ukraine had shelled the north-eastern city of Kharkiv as a way of whipping up anti-Russian sentiment.

Image source, Igor Kolykhaev

In Kherson - the only large Ukrainian city captured by Russian forces - Mayor Igor Kolykhaev has posted on his Facebook page, external to say a huge new Ukrainian flag has been draped over the local city council building.

He says: "On the night when the city council was fired, the rope on which our state flag was held was interrupted. Today we found the opportunity to hang a new one."

Local officials have previously said there was no support for Moscow's actions in Ukraine among the city's largely Russian-speaking population.

Residents have staged regular, peaceful protests in the city, urging Russian troops to "go home".

Image source, Reuters

EU countries should consider imposing sanctions on energy imports from Russia to stop the war in Ukraine, according to Latvia's prime minister.

Arturs Karins says he thinks energy sanctions would be a way to "stop money flowing into Putin's war coffers".

Karins, who is attending a summit with EU leaders in Brussels, adds: "The most logical place to move forward is in oil and coal. We have to stop Putin. Because if we do not stop Putin, Putin will not stop."

Quentin Somerville
BBC News, Kharkiv

The tale of Kharkiv is the story of the army that didn't fail, and an army that failed to win. Defying widespread expectations that it would collapse in short order, Russian forces have been unable to breach the Ukrainian army's lines around the north-eastern city and have not managed to encircle it.

Russia invaded at 05:00 on 24 February. The night before, 22-year-old Vlad and his brother-in-arms Mark, also 22, were at a fellow private's wedding.

When they learned of the attack, Vlad and Mark joined their battalion - the 22nd Motorised Infantry - and headed straight to the front lines. They have been there ever since.

A month on, while Russian missiles still strike at the city centre and at least half the 1.4m population have fled, there are neighbourhoods that remain untouched.

Against the regular beat of Russian artillery outside, I ask Mark and Vlad what they are fighting for.

Vlad's reply is short and to the point, "For peace in Ukraine." Mark shoots him a glance, "My comrade says for peace in Ukraine," he laughs, then he swears and asks: "Who knows? These people came to our land. No-one was waiting for them here, no-one was calling them."

Do they think of the soldiers on the other side, I wonder. Vlad says he has a message for them: "Run. Run away. Either you stay here in the ground or you go back home."

He pauses, but then adds: "Don't kill kids, destroy homes and families."

This time it is Mark who is to the point:

Read Quentin Sommerville's full report

Image source, Oliver Carroll

Anna Vorosheva, a businesswoman from Mariupol, has been telling the BBC about her plans to return to the devastated southern city to bring supplies and help others leave.

She left Mariupol on 18 March and is currently in Zaporizhzhia, about 200km (120 miles) away.

She told the BBC World Service's Newshour programme: "My conscience won't let me go any further. Not one single car or service is going in, unless it's driven by individuals, by volunteers... to take supplies in, help people come out.

"I completely understand the risk. But buses are not getting to people. They're having to go 35 kilometres on foot. I'm a 45-year-old woman and strong. But there are women and children and old people and they can't make it out."

Vorosheva described conditions there.

"If you want to know [what it's like in Mariupol], you should go in to your cellar, turn out the light, take no food or water, so it's freezing cold. Don't wash yourself, go to the toilet in the street, not have nappies for babies or for old people," she said.

"People who are ill are rotting to death in their beds. There's no water to cook your pasta. There are no communications. Since 1 March there's been no telephones, no radio, no TV, no internet."

Imogen Foulkes
BBC News, Geneva

Image source, Reuters

After one month of war, more than half of Ukraine's children - 4.3 million of an estimated 7.5 million - have now been displaced, the UN children's organisation Unicef says.

Of those, 1.8 million have fled to neighbouring countries, while 2.5 million are internally displaced inside Ukraine.

"This is a grim milestone that could have lasting consequences for generations to come," Unicef's executive director Catherine Russell said.

"Children’s safety, wellbeing and access to essential services are all under threat from non-stop horrific violence."

As well as the trauma of witnessing war and having to flee their homes, Ukraine's children are suffering because of attacks on health, education and other basic services, the organisation said. An estimated 1.4 million Ukrainians have no access to safe water, 4.6 million have only limited supplies.

Unicef also reports a drop in regular childhood vaccinations against polio and measles across the country.

Toby Luckhurst
BBC News, Krakow

Marik, a 22-year-old Moroccan studying in Zaporizhzhia, south-eastern Ukraine, remembers getting a call from a friend in Dnipro at 05:00 on 24 February.

"She called and said: 'There are some lights in the sky, maybe the invasion has begun.' I said: 'Stop joking, that's impossible, it's not.'" Minutes later, he saw on Telegram that Russian President Vladimir Putin had ordered the start of the attack.

Within an hour, he had thrown his belongings together and boarded a train to Lviv in the west. Marik shows me dozens of videos of him and his fellow students on the 22-hour trip across the country.

Once in western Ukraine, a friend drove them as close to the border with Poland before traffic forced him to turn back. Marik and his friends walked the last 40km (25 miles) overnight to the frontier.

There, officials put the international students in one line and fleeing Ukrainian women and children in another.

After three days in line, he finally crossed into Poland.

Now in Krakow, Marik says he will wait in the city in the hope the war ends quickly. If it does not, he'll go back to his hometown of Oudja in eastern Morocco.

But the medical student is keeping busy. His university has kept classes going online, despite the war.

"Because Ukraine is so strong," he says. "We have a war, but we study!"

Lucy Williamson
BBC News, Lviv

Two Ukrainian soldiers crossed paths in Lviv’s garrison church today.

Taras, a former soldier, was here to remember his relatives fighting in the war. Igor, one of its first victims, was here to be remembered himself – his coffin, led into the church by comrades in camouflage, behind a Ukrainian flag. Mourners followed, clutching bunches of blue and yellow flowers.

Killed in Donetsk in the first few days of this war, Igor is only now being returned to his family for burial.

As the priest began to chant, his twin brother kept one hand on the dark wooden coffin, the other stayed resting on his mother, weeping in a chair beside him.

Around them, all along the walls, were the faces of soldiers killed in previous conflicts here.

Taras knows several of them. He pointed out the photographs of the men he served with in 2014. He's now waiting to be called up again, and has four family members already serving in the Ukrainian army, including his daughter and son-in-law.

He points to the mourners gathered for Igor’s funeral.

"I want you to understand," he said, "that in war there is no 'my children' and 'your children' – they are all everyone’s children.

"You can't ask other people's children to put their hands in the fire for you. I’m ready for the worst, and I understand that I might receive bad news. But this is the price for centuries of freedom."

Nato leaders today agreed to extend Jens Stoltenberg's term as secretary general for an extra year, as the Western military alliance continues to respond to Russia's invasion of Ukraine.

Confirming the decision in a tweet, Stoltenberg said the West faces "the biggest security crisis in a generation", adding: "We stand united to keep our alliance strong and our people safe."

Stoltenberg has held the position since October 2014.

Image source, EPA

If you’ve just joined us here’s a quick summary of what Nato secretary general Jens Stoltenberg spoke about at his news conference:

• He says Russia’s invasion of Ukraine is the "biggest security crisis in a generation" and "we stand united to keep our alliance strong and our people safe"

• Stoltenberg says Nato has agreed to strengthen their defences by moving 40,000 troops to its eastern flank in response to Russia's invasion
• He confirmed four new battlegroups will be sent to Slovakia, Hungary, Bulgaria and Romania
• Stoltenberg also said cyber defences are being strengthened and Nato will also help Ukraine defend itself against "biological, chemical, radiological and nuclear threats"
• He says the use of chemical weapons "will totally change the nature of the conflict, it will be a blatant violation of international law and it will have widespread consequences"
• Putin’s invasion of Ukraine has changed our security environment for the long term and Nato is prepared for the “long haul”, he says

That marks the end of the press conference from the Nato secretary general as he has to now attend a G7 meeting. We'll be bringing you more from Brussels, where the summits are happening, through the afternoon.

Image source, Nato

Stoltenberg says he's concerned because Russia is trying to accuse Ukraine and its allies of preparing to use chemical weapons - he says accusing others is a way to create a pretext to do the same themselves.

Those accusations against Ukraine and Nato allies are false.

Any use of chemical weapons will "totally change the nature of the conflict" as it would be "a blatant violation of international law" and be extremely dangerous.

It would affect not only people in Ukraine but also potentially Nato countries because of the spread of contamination.

He notes Russia has used chemical agents in the past - including in Salisbury.

This issue highlights the importance of ending the war he says, adding that "this is a dangerous situation".

Stoltenberg is asked about President Zelensky’s address and his appeal for one percent of Nato’s tanks and aircraft.

Stoltenberg says we all listened "carefully” to President Zelensky and adds Nato allies provide significant support to Ukraine - but says he won’t go into details of what equipment has been spoken about.

He says Nato will do what they can to support Ukraine with weapons so they can defend themselves.

More from the joint statement issued by the leaders of Nato, who say they are taking measures to ensure the security and defence of allies "across all domains and with a 360-degree approach".

"We are increasing the resilience of our societies and our infrastructure to counter Russia's malign influence," the statement adds, external, including against cyber-attacks.

The leaders praised the people of Ukraine, who they say have "inspired the world with heroic resistance to Russia’s brutal war."

The statement goes on to urge Russia's President Vladimir Putin to "immediately stop this war and withdraw military forces from Ukraine".

It calls on Belarus to "end its complicity" in Russia's invasion.

Image source, Nato

Nato secretary general Jens Stoltenberg is now taking questions from reporters.

He says Putin’s invasion of Ukraine has changed our security environment for the long term and Nato is prepared for the “long haul”.

He reiterates that the alliance has increased its presence in the east and today agreed four new battlegroups which will be sent to Slovakia, Hungary, Bulgaria and Romania.