As it happened: Kyiv warned of toxic fumes after strike on oil depot
Updates from BBC correspondents in Ukraine: Orla Guerin on the road, Sarah Rainsford in Dnipro, Fergal Keane in Lviv, and Lyse Doucet, Paul Adams, Nick Beake & James Waterhouse in Kyiv
Related Video and Audio
RTL
Live Reporting
Edited by Boer Deng
All times stated are UK
Get involved
Ukrainians fighting heroically, says Boris Johnson
Boris Johnson has said Ukrainians are "fighting heroically" and with "great success" in some places. But he said more had to be done to "change the heavy odds that Ukraine faces" from the Russian invasion. Tougher sanctions, including a move to shut Russia out of the global payments system Swift, were needed, he said.
The prime minister, who was speaking during a visit to RAF Brize Norton in Oxfordshire, said the UK was sending humanitarian, military and financial supplies to Ukraine. He added that 1,000 troops were being sent to the region to help with the influx of refugees and he said the government would "of course help people fleeing for their lives".
"Things are not going all the way of President Putin. Very far from it, the Ukrainians are fighting heroically, and in some places with great success," Johnson said.
Kyiv takes cover and waits
A city-wide curfew has come into effect in Kyiv and will last until Monday morning.
Mayor Vitali Klitschko says anyone seen in the streets will be considered a Russian "saboteur" and so the population is hunkering down in homes, shelters, basements and metro stations as they await a fresh Russian assault.
Our correspondent Paul Adams is one of those taking cover.
I'm staying to fight for my future - Kyiv resident
Georgina Rannard
BBC News
Yulia Solodchuk, 29, lives near that residential building that was shelled early this morning in Ukraine's capital, Kyiv.
She told me over the phone that she spent Friday night at home - she was scared she would not be able to escape from a shelter if it was attacked.
Despite hearing many explosions on Friday, Yulia has no plans to leave the city despite what could happen overnight: "I bought a lot of food, I have drinking water.
"We are all uniting - everyone wants to contribute. I'm not allowed to join the army, so instead I'm fighting online," she says.
Yulia has been told not to go to work for now, so she's spending her time "fighting Russian disinformation", reporting fake news and bot accounts on social media.
"We have this will to fight. This is our land, we need to really fight for our future."
Air-raid sirens start in Kyiv
Air-raid sirens have started in Kyiv as the city braces for another night of Russian attacks.
Here's a video from a reporter in the city (you'll want to have your sound on).
WATCH: Man tries stop tank with his bare hands
Video content
France will also send Ukraine more weapons
Germany and the Netherlands have announced shipments of weapons to Ukraine today. We're now hearing that France has also pledged to deliver more military aid.
President Macron's office says the country will send defensive weapons and fuel, Reuters reports.
It adds it will also take action against "Russian media and influencers" spreading misinformation about the conflict
EU Council President Charles Michel said on Twitter that the union of 27 member states would "facilitate deliveries of military aid from the EU to Ukraine".
He did not give further details but EU foreign ministers are meeting tomorrow to discuss a new package for the Ukrainian armed forces.
Johnson and Zelensky speak by phone
Chris Mason
Political Correspondent
President Zelensky of Ukraine has spoken again by phone with Boris Johnson.
A Downing Street spokeswoman said the prime minister “paid tribute to the incredible heroism and bravery of President Zelensky and the Ukrainian people".
She added: "The leaders agreed that President Putin is being met with a greater Ukrainian resistance than he calculated on.”
The pair were also said to have "agreed on the need for the international community to isolate Russia completely diplomatically and financially".
And they "welcomed the increased willingness to take action on excluding Russia from Swift".
Swift is an international payments system that some countries – including the UK – want to freeze Russia out of. Some European countries haven’t been willing to agree to this but Germany - a key hold-out - considerably softened its position earlier today.
Netherlands confirms new military support to Ukraine
Anna Holligan
BBC News Hague correspondent
The Netherlands has promised it will send additional military support to Ukraine.
The shipment includes 200 Stinger missiles and 50 Panzerfaust-3 anti-tank weapons with 400 missiles.
Defence Minister Kasja Ollongren says they are also investigating, in co-operation with Germany, the possibility of supplying Patriot missiles to a Nato battlegroup being formed in Slovakia.
"There was a careful but, given the circumstances, shortened check to make sure this meets weapons exports criteria," she says.
Stingers can be deployed against planes and helicopters with a range of up to 5km (3.1 miles).
The Dutch army possesses two types – a portable missile fired from the shoulder and one which can be mounted on an armoured vehicle.
The Netherlands' parliament already agreed to provide ballistic vests, combat helmets, sniper rifles, ammunition and mine detection systems.
Some of those items are understood to have been sent this morning.
I'm horrified by invasion, Russian protester tells BBC
Hamzah Abbas
BBC News
A protester who attended anti-war demonstrations in Moscow last week has told the BBC that they are "horrified" by Russia's invasion of Ukraine.
The protester, who the BBC has chosen not to identify due to the threat of arrest by Russian police, said they had attended the demonstrations in the knowledge that they faced detention.
Since signing an anti-war letter that appeared online, the protester has been told by their employer that they must sign a declaration admitting they attended the protests in error or face losing their job.
"I want Putin to be removed from office by some democratic, legal process," they said, adding that nobody in Russia thought he would launch an invasion of Ukraine.
But they said Western sanctions, such as stripping Russia of the right to host the Champions League final, are unfair and target ordinary Russians, rather than the country's elites.
They added that Russia's suspension from the Council of Europe - the continent's oldest political body which aims to uphold human rights, democracy and the rule of law - opens ordinary Russians up to abuses from the government.
Earlier on Saturday, ex-PM and ex-president Dmitry Medvedev suggested in a social media post that Russia's expulsion could allow the regime to reintroduce the death penalty.
What's the situation on the ground?
Russian forces have regained control of Hostomel airport, to the west of Kyiv, which was attacked by airborne troops.
Russian forces arrived in the Obolon district of Kyiv on Friday, less than 6 miles (9 km) from the city centre.
There were attacks on the capital early on Saturday but the Ukrainian government remains in control and has imposed a curfew until Monday morning.
Russia is now in full control of significant parts of Ukraine's territory. Troops are spreading out in parts of the north, east and south, with missile strikes and artillery clearing the way for advancing Russian forces.
More countries have closed their airspace to Russian planes. Estonia, Latvia, Slovenia and Romania today all said they would make such a move.
On the ground: Long queues of people willing to fight
Lyse Doucet
Chief International Correspondent
In recent weeks there's been a constant traffic of arms, ammunition, and cyber and communications equipment coming to Kyiv and other places in Ukraine from Nato armies.
But there are no Nato troops on the ground and that causes some bitterness here. Ukrainians feel, and the president has often said, that when it comes to this fight, it's the Ukrainians who are doing it. You have the most advanced of Nato weaponry but then you have the most basic of patriotic resolve.
Every time we've driven by one of these offices where Ukrainians can register to volunteer, there's always a long queue.
We saw one on Friday evening. Large crowds of men surging into this open yard, showing their passports, and getting tape strapped around their arms. Almost no combat experience, just a resolve to defend their streets, to defend their families and to defend their country.
Truss draws up new Russian oligarch sanctions hit-list
UK Foreign Secretary Liz Truss has drawn up a new hit-list of Russian oligarchs to be sanctioned, The Sunday Times reports.
Liz Truss says more of the super-rich linked to Vladimir Putin's regime will be hit with restrictions in the coming weeks.
The paper says she warned them: “We will come after you... there will be nowhere left to hide."
Africans fleeing Ukraine report discrimination at borders
Stephanie Hegarty
BBC News
Africans trying to escape from Ukraine are complaining of difficulty and discrimination at land borders into the EU.
Ruqqaya, a Nigerian medical student who was studying at university in Kharkiv, walked for 11 hours overnight to arrive at Medyka-Shehyni, at the border with Poland this morning.
At the border she was told by border guards to wait as Ukrainians had to be let through first.
She says she has watched busloads of people, who she described as white, being allowed through the border while only a handful of Africans have been selected from the queue.
Ruqqaya is trying to get to Warsaw to catch a flight she has booked home to Nigeria.
Another group of students say they are stuck on the border with Przemyśl where Ukrainian border guards won’t allow them to pass.
“This is not happening to Ukrainians,” says Timothy Adegbile, a medical student in Lviv.
However, a Polish border force spokesperson says: "Everyone who arrives at the Polish border from Ukraine is being allowed entry regardless of nationality."
Zelensky hails Germany's weapons U-turn
Ukraine's president Volodymyr Zelensky has welcomed Germany's decision to send weapons to Ukraine to help fight the Russian invasion.
As we've reported, the move represents a major U-turn from Berlin on its longstanding policy of not sending lethal aid to conflict zones.
Tweeting in English, Zelensky wrote: "Germany has just announced the provision of anti-tank grenade launchers and stinger missiles to Ukraine. Anti-war coalition in action!"
Reason behind Abramovich move unclear
The statement we have reported below is all we have from Roman Abramovich for now.
Abramovich, who made his fortune in oil and gas in the 1990s, became owner of the companies that control Chelsea in 2003 and is reportedly close to Russian President Vladimir Putin.
A number of Western countries have placed sanctions on Putin and his foreign minister in recent days, including the UK, EU, and US.
BreakingAbramovich hands over 'stewardship' of Chelsea
Russian billionaire Roman Abramovich has handed "stewardship" of the football club to the trustees of its charitable foundation.
In a statement he said:
Millions in Bitcoin pouring into Ukraine from anonymous donors
Joe Tidy
Cyber-security reporter
Cryptocurrency analysts say at least $9m (£6.7m) has so far been donated to the Ukrainian war effort through anonymous Bitcoin donations.
Researchers at Elliptic, a blockchain analysis company, say that the Ukrainian government, NGOs and volunteer groups have raised the money by advertising their bitcoin wallet addresses online.
More than 4,000 donations have been made so far, with one unknown donor gifting Bitcoin worth $3m to an NGO, while the average donation is $95.
The official Twitter account of the Ukrainian state called on users to "stand with the people of Ukraine" and said it was accepting donations in the form of Bitcoin, Ethereum and USDT cryptocurrencies.
It also posted addresses for two cryptocurrency wallets and within four hours had raised more than $3.3m from donations.
Elliptic founder Tom Robinson told the BBC: "Whereas some crowdfunding and payments companies have refused to allow donations to be made to groups supporting the Ukrainian military, cryptocurrencies have emerged as a powerful alternative.”
Cryptocurrency fund raising has become a modern part of war with cases also seen in other recent conflict zones around the world.
'I never believed Russia would invade - until it did'
Ilya Barabanov
BBC Russian Service, in Kyiv
Russian journalist Ilya Barabanov came to Ukraine in 2014 to cover the "Maidan" protests, when then-President Viktor Yanukovych was deposed over decisions moving the country away from the EU and closer to Russia. Here he describes his shock, as a Russian, at the invasion of Ukraine.
I covered events in Crimea when Russia illegally annexed the Ukrainian peninsula. And I was in the east of Ukraine when Russian-backed separatists proclaimed their "people's republics".
From the first day of conflict in eastern Ukraine, Russia denied its presence there.
But I remember very clearly in September 2014, I saw these tanks with my own eyes in a town just over the border from Russia.
I also witnessed Russian troops from the Far East region of Buryatia supporting rebel fighters during a bloody battle in the Donetsk region in February 2015.
I remembered all of these things, as well as the poisoning of the Russian opposition leader Alexei Navalny, the appalling fraud at the last Russian elections and the changes to the constitution introduced in order to allow Vladimir Putin to stay in power until 2036.
Yet I still could not believe it that the Russian president would start a full-scale invasion of Ukraine.
Like many people I had listened to the US warnings in recent months but I just couldn't imagine it would really happen.
It was not until the hotel concierge was standing by my bed on Thursday morning telling me war had started that I believed it. And from that moment, everything changed.
Hungarian PM supports all EU sanctions on Russia
Hungarian Prime Minister Viktor Orban has told the BBC his country will fully support all EU sanctions against Russia.
Orban was previously considered Putin’s strongest ally in the EU.
On a visit to Hungary's eastern border with Ukraine, where a steady stream of refugees are crossing, Orban said all European countries, including Hungary, condemned Russia.
“This is not the time to be clever, this is time to be united. It's a war and we have to get the situation back to prior to the war and restore the peace,” he said.
What’s the latest?
Night has fallen in Ukraine. Here are some of the latest developments on day three of the Russian invasion: