Russia restricts social media access

In a statement, the company said "We're aware that Twitter is being restricted for some people in Russia and are working to keep our services safe and accessible".

On Friday Russia restricted Facebook after a clash over "censorship".

Russia's communications regulator Roskomnadzor accused Facebook of violating "the rights and freedoms of Russian citizens".

Facebook said it had refused to stop fact-checking and labelling content from state-owned news organisations.

Refugees rush to borders to flee Russia's war

Tens of thousands of people have already crossed into five countries bordering western Ukraine.

Poland alone has reported more than 50,000 arrivals in two days, while thousands more have streamed further south into Moldova, Romania, Hungary and Slovakia.

Most of those fleeing the invasion are women and children, as all men aged 18 to 60 are being told to stay and fight. BBC correspondents met them at the borders.


Russia restricts access to Facebook

Russia's communications regulator Roskomnadzor accused the network of "censorship" and violating "the rights and freedoms of Russian citizens".

Facebook said it had refused to stop fact-checking and labelling content from state-owned news organisations.

The move came a day after Russia launched its attack on Ukraine.

It is unclear what the regulator restrictions mean, or to what extent Facebook's parent company Meta's other platforms - WhatsApp, Facebook Messenger and Instagram - are affected.

Ukraine conflict: Shock and support on the streets of Moscow

But there is division over whether President Putin's actions are to be condemned or applauded, BBC Russian reporters discover.

When two young well-dressed men stop to chat to the BBC, one of them appears fairly relaxed about the invasion of Ukraine.

"Yes, we heard something but haven't had a chance to understand what's going on," he says.

But he is soon interrupted by his friend, swearing as he does so.

"We are shocked," he says. "We have never seen war in our lifetime and we are about to see one."

A man in a bright blue coat looks miserable.

Russia invades Ukraine in Europe’s darkest hours since WW2

Russian President Vladimir Putin says his aim is to demilitarise and 'denazify' Ukraine.

Missiles rained down on Ukrainian cities and explosions were heard near the capital Kyiv. Ukraine's military said it destroyed four Russian tanks near the eastern city of Kharkiv, killed 50 troops in the Luhansk region and downed a sixth Russian aircraft.

Ukrainian President Volodymyr Zelensky urged all citizens prepared to defend the country to come forward, saying Kyiv would issue weapons to everyone who wants them.

Ukraine-Russia invasion: Europe prepares for wave of refugees

As Russian air strikes hit overnight, many packed up and left Kyiv for the countryside or the border with the European Union.

Traffic jams clogged the roads out of some cities, and some walked on foot into Poland and Hungary.

The UN refugee chief warned that the humanitarian impact will be "devastating".

"We are particularly worried about displacement - about people on the move," Filippo Grandi told the BBC's Lyse Doucet, who is in Kyiv.

Russia to carry out 'special military operation' in south-eastern Ukraine - Putin

Explosions have already been heard in Kyiv, Kharkiv and in the Belgorod province of Russia.

Explosions also rocked the breakaway eastern Ukrainian city of Donetsk and civilian aircraft were warned away as the United States said a major attack by Russia was imminent.

Putin made the declaration in a televised speech at the same time as the UN Security Council was imploring him to stop.

Putin says Russia does not plan to occupy Ukrainian territory.

He called on Ukrainian soldiers to immediately lay down their weapons and go home.

Russia recognises Ukraine separatist regions

The self-declared people's republics of Donetsk and Luhansk are home to Russia-backed rebels who have been fighting Ukrainian forces since 2014.

Russia's move is likely to end peace talks in the region, which has been under a tenuous ceasefire for years.

Western powers also fear it could pave the way for Russian military forces to enter Ukraine's eastern regions.

UK Prime Minister Boris Johnson said it would be "a flagrant violation of the sovereignty and integrity of Ukraine" and break international law. He said it was "a very ill omen and a very dark sign".

Biden agrees in principle to summit with Putin over Ukraine tensions

The talks proposed by France will only take place if Russia does not invade its neighbour, the White House said.

The meeting could offer a possible diplomatic solution to one of the worst security crises in Europe in decades.

US officials say intelligence suggests Russia is ready to launch a military operation, which Moscow denies.

The proposal was announced by the French presidency after two phone calls between President Emmanuel Macron and Mr Putin, which went on for almost three hours in total.

Russia keeps troops in Belarus amid Ukraine fears

A statement cited the "deterioration of the situation" in east Ukraine as one reason for keeping an estimated 30,000 Russian troops in Belarus.

The move will add to fears that Russia plans an invasion of Ukraine, which shares a long border with Belarus.

Western leaders have accused Moscow of seeking a pretext to send in troops.

Russia has denied it plans to invade its neighbour.

US Secretary of State Antony Blinken said the extension of military exercises shows the world is on the brink of war.