In Mariupol, Russia may have won the battle, but it's proving difficult to get Ukrainians still there to work with the new administration.

Vadim Boychenko, Mariupol's mayor when it fell to Moscow, told a news conference today that Russian forces had begun handing out prison sentences as long as 10 years to those who refused to get on side.

Occupied areas in eastern Donetsk are doing the same, he claimed, with special prisons already housing thousands of Ukrainians - some with up to 15 inmates crammed into two-by-three metre cells.

The BBC has not been able to independently verify these claims.

Image source, .

Image source, AFP

Senegal's president and head of the African Union, Macky Sall, has told Vladimir Putin he should consider the impact of food shortages caused by the invasion of Ukraine.

The two men have been meeting in the southern Russian city of Sochi.

The AFP news agency quotes Sall as saying Putin should "become aware that our countries, even if they are far from the theatre [of action], are victims on an economic level".

He added that food supplies should be "outside" of the West's sanctions on Russia.

Before the conflict, more than 40% of wheat consumed in Africa came from either Ukraine or Russia.

Before he left Senegal, President Sall's office said the visit was aimed at freeing up stocks of cereals and fertilisers that are currently blocked in Ukrainian ports.

African countries have been particularly affected by the price increases caused by the war.

Earlier, the Reuters news agency quoted the Kremlin as saying that Putin would give an "exhaustive" explanation as to what is happening to Ukrainian grain.

In his public remarks after the meeting, Putin said Russia was "always on Africa's side".

There are no winners in the conflict, the UN says, with fighting in its 100th day.

"This war has and will have no winner. Rather, we have witnessed for 100 days what is lost: lives, homes, jobs and prospects," Amin Awad, the United Nations crisis co-ordinator for Ukraine, has said.

"We need peace. The war must end now."

If you are just joining us, here are some of the headlines on the 100th day since Russia invaded Ukraine.

• President Volodymyr Zelensky has praised Ukrainian resistance and proclaimed that "victory will be ours"
• Russia has made gains and will not give up until it has achieved its objectives, the Kremlin said
• Nato Secretary-General Jens Stoltenberg has warned Western countries they need to "prepare for the long haul", saying the conflict is becoming a "war of attrition"
• Fighting is continuing in the eastern city of Severodonetsk, which is now largely under Russian control
• Ukraine claims to have repelled five attacks in Donetsk and Luhansk in the eastern Donbas region
• According to the UK's Ministry of Defence, Russia is now achieving "tactical success" in the region but at "significant resource cost"

Steve Rosenberg
BBC Russia editor, Moscow

The last one hundred days have not only devastated Ukraine. They have changed Russia.

This feels like a different country. Gone are the independent news outlets I used to read, watch and listen to; either blocked or shut down.

Gone are many of the western shops and cafes that once filled the shopping centres here. Hundreds of international companies have pulled out of Russia in protest at the invasion.

One thing there’s plenty of is propaganda.

From morning to night, Russian state TV assures viewers that what Russian troops are doing in Ukraine is necessary, unavoidable - and not a war. The Kremlin’s still sticking to its claim that this is a limited 'military operation', designed to fight Nazis, ultra-nationalists and bring peace and liberation to Ukraine.

Bombarded with doublethink, you begin to feel you're a character in George Orwell’s 1984.

The Russian economy hasn't collapsed under the pressure of sanctions. But the world’s largest country is now unable to import many of the goods it once did, including High tech items like semi-conductors. The EU's oil embargo is expected to cost Moscow billions of dollars in lost export revenue.

Russians are bracing for tough times ahead.

Image source, EPA

We have heard from the Ukraine leadership on the 100th day of the Russian invasion - now we have some comments from the Kremlin.

Spokesperson Dmitry Peskov says Russia has made gains and will not give up until it has achieved its objectives.

He says one of the main goals of the operation, as Moscow calls it, is to protect people in the self-proclaimed Donetsk People's and Luhansk People's Republics.

"Measures have been taken to ensure their protection and certain results have been achieved," he says.

"Quite a number of localities have been cleared from the pro-Nazi Ukrainian armed forces, and people there can start bringing their lives back to normal now.

"These efforts will be continued until all goals have been attained in the special military operation."

The UN has said it will send three human rights experts to Ukraine later this month to investigate alleged violations and abuses.

The commissioners, who are members of the UN's independent international commission of inquiry on Ukraine, will visit several locations, including the cities of Lviv, Kyiv, Kharkiv and Sumy, from 7 to 16 June.

They will meet victims, witnesses and people who have been displaced, as well as government officials, the UN said in a statement, external.

Many of those who fled Ukraine in the early stages of the war are returning - including a baby boy who was born in a hospital basement on the second day of the invasion - 25 February.

Our correspondent James Waterhouse met him and his mother.

Will Vernon
BBC News, Moscow

In its latest statement, the Russian defence ministry has accused the UK of taking part in propaganda by assisting the Ukrainians in creating “staged videos”. Russia claims they are being filmed in eastern Ukraine, and show Ukrainian forces using Western weapons that are “highly effectively” in fake battles.

The ministry accompanied the statement with footage, allegedly showing the “videos” being filmed.

This is not the first such outlandish claim made by the Russian military.

Moscow regularly accuses Ukraine and Western nations of faking evidence and organising “provocations” in order to blame Russia for committing war crimes and shelling civilian areas.

In fact, there is a large amount of evidence - much of which is being recorded by independent international organisations - of war crimes committed by Russian forces in Ukraine.

None of the statements nor materials released by the Russian defence ministry today have made any mention of the 100-day anniversary of Russia’s invasion of Ukraine.

On Thursday, independent Russian news website Meduza reported that state-controlled media have been told by the Kremlin to not “accentuate the longevity” of the war on the eve of the 100-day milestone.

Read more on Russia's propaganda making machines here

Image source, Reuters

More than three months have passed since the war started. Here are some key dates in the conflict:

24 February: Russia launches full-scale assault on Ukraine

30 March: Russia announces it will curb its assault on Kyiv and later shifts its focus to eastern Ukraine

13 April: US President Joe Biden accuses Russian troops of committing genocide in Ukraine

21 April: Russian President Vladimir Putin declares key port city of Mariupol "liberated" after nearly two months of siege, but hundreds of defenders hold out inside the city's Azovstal steelworks

9 May: Putin urges Russia to battle on in defiant Victory Day speech, but remains silent about plans for any escalation in Ukraine

18 May: Finland and Sweden apply to join Nato, in the wake of Russia's invasion

20 May: Russia declares complete victory at Mariupol's Azovstal steelworks plant

Late May: Russian offensive shifts to Donbas

26 May: More than 14 million people said to have fled homes since invasion, UN says

31 May: EU clinches compromise deal on banning Russian oil

• Read more stories and analysis of the war in Ukraine here

Over in Kyiv, Ukraine's President Zelensky has marked the 100th day of war with a poignant video.

In it, the wartime leader is flanked by some of his closest allies - including Ukraine's PM - whose titles he reads aloud before saying they are all here.

Zelensky and his team stand in front of the Ukrainian presidential office, in the centre of the capital.

On 25 February, a day after Russia launched its invasion, the president posted a similar defiant video, external - from the exact same location.

Then, Zelensky had just refused offers by the West to be evacuated from Kyiv, famously saying "I need ammunition, not a ride".

Now, 100 days later, he remains in the post as the war continues.

Chris Partridge
BBC News

Image source, US Army

Ukraine says it does not plan to use the advanced multiple launch rocket systems it is getting from the US to strike targets inside Russia.

Presidential adviser Mykhailo Podolyak said his country was waging a defensive war – saying that countries which had supplied Ukraine with equipment "know where their weapons are used".

This week, the US confirmed it was sending four advanced units to Ukraine. Known as HIMARS (High Mobility Artillery Rocket System), they will use precision-guided munitions to strike targets up to 45 miles (72km) away.

Training outside of Ukraine will take about three weeks, so will not be operational - in battle - for a while.

The longest range HIMARS rockets can hit targets 180 miles away. But these won't be sent to Ukraine amid concerns from Washington about missiles landing in Russian territory.

Kyiv will still get systems with roughly twice the range of the M777 howitzers the US has previously provided. Nearly all of those 108 units are now in Ukraine, along with much of the 200,000 rounds of ammunition.

• What weapons are being given to Ukraine by the UK?
• US 'adding fuel to fire' by sending longer-range rockets to Kyiv - Russia

Joe Inwood
Reporting from Kyiv

Image source, Getty Images

Standing at the northern end of Kyiv’s Maidan - Independence Square - it is easy to forget this is a nation still at war.

Gentle music drifts past young couples enjoying coffee in the morning sun. A little boy dressed in yellow and blue chases pigeons.

But, stroll down further and the tell-tale signs are there: men in military uniform; tank traps; sandbags. Not usual sights in a European capital.

It's also easy to forget how close things came to being very different.

Yesterday I interviewed the new US Ambassador to Ukraine, who has only recently arrived in the capital.

She told me about a visit to Hostomel Airfield - the site of a crucial Ukrainian victory at the start of the war.

"It's just a couple kilometres outside of Kyiv. If Russia had controlled the airfield and the skies in the capital, it may have been a different situation."

But, Ukraine did hold on, winning a famous victory. So, the Maidan retains its independence from Russia's influence.

This nation, however, has learned that winning the battle does not win you the war.

The Russians have learned it too, and they seem determined not to repeat their mistakes.

Imogen Foulkes
Reporting from Geneva

The International Committee of the Red Cross (ICRC) has said the scale of the destruction in Ukraine "defies comprehension".

In a statement issued to mark the 100th day of the conflict, the ICRC’s director general Robert Mardini said: "It would be hard to exaggerate the toll that the international armed conflict in Ukraine has had on civilians over the last 100 days...

"Homes, schools and hospitals have been destroyed and civilians have suffered the horrors of conflict, with lives lost and families torn apart."

He also called for access to all prisoners of war, saying that while the Geneva Conventions allowed for the ICRC to visit all prisoners of war wherever they were held, the warring parties had allowed access to only some, "and some is not enough".

The Red Cross usually remains neutral, so these are strong words and reflect the humanitarian organisation's deep concerns. But it's not the first time the Red Cross has spoken out against the war - read more here.

Vitaliy Shevchenko
BBC Monitoring

Image source, 1+1

Russian TV has so far made no mention of the fact that it is now 100 days since Russia invaded Ukraine.

Russia's most popular TV channels all began their morning bulletins by accusing Ukraine of indiscriminately shelling areas outside of government control. Kremlin-run TV channel, Rossiya 1, says "nationalists have attacked Mariupol and Donetsk", while Channel One, also state-run, gives "new examples of professionalism and selflessness shown by the Russian military while defending Donbas".

Neither station mentions that Russia's "special military operation" in Ukraine has entered its 100th day. Before the war started, commentators on both channels had suggested to their viewers that it would likely take Russia just a few days to take control of Ukraine.

Yesterday, the independent website Meduza, external quoted sources as saying that the government had ordered state media not to mention the 100 days. "Focusing on dates linked to the war may make Russians think about the objectives of the invasion and about how successful it has been," one Kremlin source reportedly told Meduza.

This is in sharp contrast to media coverage in Ukraine, where television is covering today's developments under the slogan "100 Days of Fortitude".

"This is no date to celebrate, and we hope that we will not be marking 200 days since the start of the war. We hope to celebrate our victory day," said the presenter on privately-run Pryamy TV.

Image source, Serhiy Haidai / Telegram

We've reported extensively on Russia's campaign to take eastern Ukraine, which has largely been seen via attacks on the city of Severodonetsk and helped Russia secure around 20% of overall Ukrainian territory.

Sharing his piece on the situation in Severodonetsk - the easternmost city still under Ukrainian control - Luhansk's governor Serhiy Haidai said in a Telegram post that fighting raged on.

Alongside photos of damaged buildings, Haidai recalled a number of air attacks in recent days. He said the blasts led to almost 30 homes being destroyed across the region and the death of a resident in Lysychansk.

He also listed various eastern towns and villages, saying they too had been hit by Russian airstrikes, but did not provide further details.

The BBC has been unable to independently verify these claims.

Image source, .

As we've been reporting, the focus of Russia's offensive has been on the eastern side of Ukraine in recent weeks, with Russian forces managing to secure about a fifth of the country.

In the eastern city of Slovyansk in the Donetsk area, the situation is tense amid reports that Russia may be preparing an assault on the city, according to the head of the city's military administration Vadym Lyakh:

"The situation is tense because the city was shelled three times this week. We had three killed, a number of people injured. The city's infrastructure is also being shelled. Currently, we have no water. We had no electricity, but this has been fixed now.

"We are constantly urging city residents to evacuate - fortunately, this process has now picked up speed. Twice as many people are now leaving compared with a week ago, but still quite a few people remain in the city - about 30% of the total population."

He estimates that about 25,000 civilians are currently in the city.

Meanwhile in Lysychansk, a city in the Luhansk area which has been under attack, the city is being constantly shelled and the situation remains difficult, says the head of the city's military administration Oleksandr Zaika:

"To get to Lysyschansk from [twin city] Severodonetsk is currently almost impossible, because fierce fighting continues there [in Severodonetsk].

"Every day, we deliver humanitarian aid and water" to civilians sheltering in Lysychansk, he adds.

James Landale
Diplomatic correspondent

Image source, Getty Images

As we've been reporting, it's been 100 days since the war in Ukraine started. But how will it end? Here are five possible scenarios:

1. War of attrition: The war might continue for months - if not years - as Russian and Ukrainian forces grind each other down
2. Putin announces a ceasefire: The Russian president could surprise the world with a unilateral ceasefire, pocketing his territorial gains and declaring "victory"
3. Battlefield stalemate: Ukraine and Russia conclude they cannot achieve more militarily and enter talks for a political settlement
4. 'Victory' for Ukraine: Ukraine could force Russian troops to withdraw to where they were before the invasion
5. 'Victory' for Russia: Russia could capitalise on its gains in Donbas, freeing up forces for use elsewhere, perhaps even targeting Ukraine's capital, Kyiv, once again.

Read more about what each scenario entails here.

An update now about what's happening on the ground.

Over the last day, troops have repelled five Russian attacks in Donetsk and Luhansk, the Ukrainian Armed Forces' General Staff said in its daily Facebook update.

Meanwhile, intense fighting continues in the centre of Severodonetsk, as well as near Studenka towards the city of Lyman.

Ukraine also claimed that "some units" of Russia's 150th Motorized Rifle Division of the 8th Combined Arms Army had lost "at least 50%" of its personnel and weapons following fighting in Popasna, Luhansk.

The BBC has been unable to independently verify these claims.

Image source, .

James Waterhouse
Reporting from Kyiv

Image source, Getty Images

Over a period of 100 days, the city of Kyiv has gone from stubborn normality, through complete darkness, and is now emerging into some sort of calm.

More than half the city's four million population left as a result of the Russian invasion. But in April, the tide turned.

The Russian retreat allowed Kyiv to claw back some of the reality it had lost. There were no more military checkpoints in central parts of the city.

The past few weeks have seen the city feel as normal as it has ever been. The nights are still silent with a 23:00 curfew, but the day brings more life.

Read more from James Waterhouse about life in the Ukrainian capital since the invasion