· More than 2,400 civilians have been killed in the southern Ukrainian city of Mariupol since the Russian invasion, EU foreign policy chief Josep Borrell has declared. This compares to nation-wide figures of at least 636 civilians in Ukraine declared by the U.N. human rights office (OHCHR).

· A barrage of Russian missiles has struck a large Ukrainian base near the border with NATO member Poland, killing 35 people and wounding 134, a local official said, in a widening of the war to the west of the country as fighting raged elsewhere.

· Ukrainian President Volodymyr Zelenskyy will address U.S. Congress virtually, U.S. Senate Majority Leader Chuck Schumer and House Speaker Nancy Pelosi said in a joint letter to U.S. lawmakers.

· Ramzan Kadyrov, the leader of Russia's Chechnya region an and ally of Russian President Vladimir Putin, says he has traveled into Ukraine to meet Checken troops attacking Kyiv.

· The number of refugees fleeing Ukraine has hit 2.8 million, United Nations data showed. Nearly 250,000 refugees have arrived in Russia from Ukraine, the acting head of the Russian emergencies ministry told news agencies.

· Ukrainian Foreign Minister Dmytro Kuleba has demanded a global boycott of international companies that have kept their operations open in Russia.

· U.S. drug company Pfizer has says it can't stop supplying medicines to Russia for humanitarian reasons, but would donate all profits from its unit in the country to causes supporting the people of Ukraine.

· The head of Ukraine's state-owned grid operator, Ukrenergo, said the Chernobyl nuclear power station is relying on electricity from diesel generators after external power supplies to the plant were damaged again.

· Turkish president Tayyip Erdogan will discuss the war in Ukraine with German Chancellor Olaf Scholz at talks in Ankara, as both countries press on with efforts to secure a ceasefire 19 days into Russia's invasion.

· One of President Vladimir Putin's closest allies said Russia's military operation in Ukraine has not gone as quickly as the Kremlin had wanted, the strongest public acknowledgement yet from Moscow that things were not going to plan.

· The fourth round of talks between Ukraine and Russia are taking a "technical pause" until tomorrow according to one of the Ukrainian negotiators, Mykhailo Podolyak.  

· A pregnant woman and her baby have reportedly died after Russia bombed the maternity hospital in Mariupol where she was meant to give birth.

· Australia and the Netherlands said they had begun joint legal action against Russia at the International Civil Aviation Organisation over the downing of Malaysia Airlines flight MH17 over Ukraine eight years ago.

· An American journalist has been shot and killed by Russian forces in the town of Irpin in Ukraine's Kyiv region.

· The Ukrainian defense ministry's latest operational update on the Russian invasion claims there have been "mass refusals by Russian servicemen" to fight in the war on Ukraine.

· Squatters have occupied the London mansion suspected of belonging to the family of Russian billionaire Oleg Deripaska, who was placed on Britain's sanctions list last week, unfurling a Ukrainian flag and a banner saying 'This property has been liberated'.

Russia's defense ministry has justified its attack on a large Ukrainian base 15 miles from the border with Poland that killed 35 people and wounded 134.

The ministry said the air strike had destroyed a large amount of weapons supplied by foreign nations that were being stored at the sprawling training facility, and that it had killed "up to 180 foreign mercenaries". Casualty numbers have not been independently verified.

The attack on the Yavoriv International Centre for Peacekeeping and Security brought the conflict to the doorstep of the Western defense alliance.

Russia had warned on Saturday that convoys of Western arms shipments to Ukraine could be considered legitimate targets.

White House national security adviser Jake Sullivan, speaking on CBS's "Face the Nation", said any attack on NATO territory would trigger a full response by the alliance.

Turkish President Tayyip Erdogan and German Chancellor Olaf Scholz are meeting in Ankara in a bid to end the Russia-Ukraine conflict.

NATO member Turkey shares a maritime border with Ukraine and Russia in the Black Sea and has good ties with both. It has said the invasion is unacceptable and voiced support for Ukraine, but has also opposed sanctions on Moscow, while offering to mediate.

Turkey says it can facilitate peace talks between Ukraine and Russia, but says that a ceasefire and humanitarian corridors are needed first.

Russia's National Guard chief Viktor Zolotov, a key Putin ally, told a church service led by Orthodox Patriarch Kirill the country's military operation was not going as quickly as planned.

He blamed the slower than expected progress on what he said were far-right Ukrainian forces hiding behind civilians, an accusation repeatedly made by officials in Russia.

"I would like to say that yes, not everything is going as fast as we would like," Zolotov, once in charge of Putin's personal security, said in comments posted on the National Guard's website. "But we are going towards our goal step by step and victory will be for us, and this icon will protect the Russian army and accelerate our victory."

Zolotov was once Putin's security chief. The National Guard he heads is an internal military force subordinated directly to Putin, with forces deployed in Ukraine.