Russian attacks batter Ukraine civilians as Biden brands Putin a war criminal

A Russian airstrike ripped apart a theatre where hundreds of people have been living in the besieged city of Mariupol, Ukrainian officials said, as Russian President Vladimir Putin called for a "self-purification" to rid his country of anyone who questions his invasion.

The bombardment Wednesday of the theatre, which had become a makeshift shelter as combat tore across the port city over the past three weeks and made thousands homeless, left many people buried in the burning rubble, Ukraine's foreign ministry said in a statement. There was no immediate word on how many people were killed or injured.

At least as recently as Monday, the pavement in front of and behind the once-elegant theater was marked with huge white letters spelling out "CHILDREN" in Russian, according to images released by the Maxar space technology company.

"My heart breaks from what Russia is doing to our people," Ukrainian President Volodymyr Zelenskyy said Wednesday night, hours after he delivered a speech via video to the U.S. Congress that garnered several ovations.

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The Russian defence ministry denied bombing the theater or anywhere else in Mariupol on Wednesday.

Six nations have called for a U.N. Security Council meeting on Ukraine on Thursday afternoon, ahead of an expected vote Friday on a Russian resolution demanding protection for Ukrainian civilians "in vulnerable situations," yet making no mention of Moscow's responsibility for the war.

"Russia is committing war crimes and targeting civilians," Britain's U.N. Mission tweeted, announcing the call for the meeting that was joined by the U.S., France and others. "Russia's illegal war on Ukraine is a threat to us all."

Evacuees from Mariupol gather at a shopping cexjmtzywntre on the outskirts of the city of Zaporizhzhia, which is now a registration centre for displaced people, on Wednesday. (Emre Caylak/AFP/Getty)

Russian attacks have battered cities and villages across large parts of Ukraine, including the capital, Kyiv, where residents have been huddling in homes and shelters.

Kyiv apartment struck by rocket 

A fire broke out in a Kyiv apartment building early Thursday after it was hit by the remnants of a downed Russian rocket, killing one person and injuring at least three others, according to emergency services. Firefighters evacuated 30 people from the top floors of the 16-storey building and extinguished the blaze within an hour.

Putin went on television to excoriate Russians who don't back him, even as both sides expressed optimism over efforts to negotiate an end to the fighting.

Russians "will always be able to distinguish true patriots from scum and traitors and will simply spit them out like a gnat that accidentally flew into their mouths," he said. "I am convinced that such a natural and necessary self-purification of society will only strengthen our country."

Russia condemned for civilian casualties in Ukraine

6 hours agoDuration 3:43Western nations have condemned Russia for its continued attacks on Ukrainian civilians, most recently attacks on a theatre-turned-shelter in Mariupol and a bread line in northern Ukraine, which killed at least 10 people. 3:43

He said the West is using a "fifth column" of traitorous Russians to create civil unrest.

"And there is only one goal, I have already spoken about it — the destruction of Russia," he said.

The speech appeared to be a warning that his authoritarian rule, which had already grown tighter since the invasion began on Feb. 24, shutting down Russian news outlets and arresting protesters, could grow even more repressive.

Russian blogger charged under new information law

In a sign of that, Russian law enforcement announced the first known criminal cases under a new law that allows for 15-year prison terms for posting what is deemed to be "false information" about the Ukraine war. Among those charged was Veronika Belotserkovskaya, a Russian-language cookbook author and blogger living abroad.

But it also came amid signs that talks were finally making progress.

Russian Foreign Minister Sergey Lavrov said after Tuesday's meeting that a neutral military status for Ukraine was being "seriously discussed" by the two sides, while Zelensky said Russia's demands for ending the war were becoming "more realistic."

Wednesday's talks, held by video, appeared to wade more deeply into technicalities.

Damaged vehicles and buildings in Kharkiv city centre on Wednesday. (Pavel Dorogoy/The Associated Press)

Zelensky adviser Mikhailo Podolyak said Ukraine demanded a cease-fire, the withdrawal of Russian troops and security guarantees for Ukraine from several countries.

"This is possible only through direct dialogue" between Zelenskyy and Putin, he tweeted.

An official in Zelensky's office told The Associated Press that the main subject under discussion was whether Russian troops would remain in separatist regions in eastern Ukraine after the war and where the borders would be.

The official, speaking on condition of anonymity to discuss the sensitive talks, said Ukraine was insisting on the inclusion of one or more Western nuclear powers in the negotiations and on a legally binding document with security guarantees for Ukraine. In exchange, the official said, Ukraine was ready to discuss a neutral status.

Russia has demanded that NATO pledge never to admit Ukraine to the alliance or station forces there.

Volodmyr Zelensky pleads for no-fly zone in address to U.S. Congress

7 hours agoDuration 2:50Ukrainian President Volodymyr Zelensky used his address to the U.S. Congress to plead for aid, including a no-fly zone over his country. 2:50

Earlier Wednesday, Zelensky went before the U.S. Congress via video and, invoking Pearl Harbor and 9/11, pleaded with America for more weapons and tougher sanctions against Russia, saying: "We need you right now."

U.S. President Joe Biden announced the U.S. was sending an additional $800 million in military aid to Ukraine. He also called Putin a "war criminal," in his sharpest condemnation since the invasion began.

Although Moscow's ground advance on the Ukrainian capital appeared largely stalled, Putin said earlier that the operation was unfolding "successfully, in strict accordance with pre-approved plans." He also decried Western sanctions against Moscow, accusing the West of trying to "squeeze us, to put pressure on us, to turn us into a weak, dependent country."

Civilians evacuating from Mariupol are placed at the circus building in Zaporizhzhia, Ukraine on Tuesday. (Anadolu Agency via Getty Images)

The fighting has led more than 3 million people to flee Ukraine, the U.N. estimates. The death toll remains unknown, though Ukraine has said thousands of civilians have died.

Speaking to Congress, Zelenskyy said that Russia "has turned the Ukrainian sky into a source of death." But Biden has rejected Zelenskyy's requests to send warplanes to Ukraine or establish a no-fly zone, fearing a war between the U.S. and Russia.

Nowhere has suffered more than the encircled city of Mariupol, where local officials say missile strikes and shelling have killed more than 2,300 people. The southern seaport of 430,000 has been under attack for almost all of the three-week war in a siege that has left people struggling for food, water, heat and medicine.

Using the flashlight on his cellphone to illuminate a hospital basement, Dr. Valeriy Drengar pulled back a blanket to show the body of a 22-day-old infant. Other wrapped bodies also appeared to be children.

"These are the people we could not save," Drengar said.