As Russia's war in Ukraine enters a pivotal new phase, fighting is intensifying in the east of the country and officials have warned of a battle that "will remind you of the Second World War." Here's what to know about what may come next.Ukrainian Foreign Minister Dmytro Kuleba said Thursday that fighting in the Donbas region of eastern Ukraine was ramping up but that it "has not reached its maximum scale.
Russia's Ministry of Defense confirmed Sunday that an ultimatum for Ukrainian soldiers still resisting an unrelenting assault in parts of the devastated southeastern city to surrender had been ignored.
In a statement, it said that the surrounded Ukrainian soldiers at the Azovstal plant "were offered to voluntarily lay down arms and surrender in order to save their lives."
"However, the Kiev nationalist regime, according to the radio intercept, forbade negotiations about surrendering," the Ministry claimed.
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"Now is no time for complacency," Biden said in announcing the news. He also accused the Russian military of committing "horrific acts of brutality.""As the Russian military repositions for the next phase of this war, I have directed my Administration to continue to spare no effort to identify and provide to the Ukrainian military the advanced weapons capabilities it needs to defend its country," Biden said in a statement released by the White House.
It also asserted that according to Ukrainian soldiers who had previously surrendered "there are up to 400 foreign mercenaries who joined the Ukrainian forces" trapped at the plant. including Europeans and Canadians. "In case of further resistance, all of them will be eliminated," it said.
Earlier Sunday, an adviser to the mayor of Mariupol rejected the Russian ultimatum. Petro Andriushchenko said on Telegram that "as of today, our defenders continue to hold the defense."
Mariupol has been under siege for more than a month, with heavy casualties and much of the city destroyed by shelling. Civilian structures have targeted including a maternity hospital and a theater where up to 1,300 people had been seeking refuge.
The military governor of Ukraine's Donetsk region, where Mariupol is located, said on Tuesday up to 22,000 people may have died in the city. CNN cannot verify these figures, as there are no independent casualty figures from the fighting in the city available.
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A spokesperson for the Pentagon said it couldn't confirm the reports, but they reflect its concerns about Russia's use of chemical agents in Ukraine."We are aware of social media reports which claim Russian forces deployed a potential chemical munition in Mariupol, Ukraine," Kirby said."We cannot confirm at this time and will continue to monitor the situation closely.
Though many have fled, an estimated 100,000 people still remain in Mariupol and its immediate surroundings, which are reported to be largely under Russian control.
Some Ukrainian troops are also blockaded in the city, holding out against the Russian onslaught despite overwhelming odds. But they are confined to pockets of resistance, and their numbers are unclear.
According to Russian state media, most of the Ukrainian defenders are located in the Azovstal steel works, one of the largest such plants in Europe with a network of rail tracks and furnaces. Andriushchenko said resistance to the Russians continued beyond this plant.
"Despite the occupiers' desire to show that the place of hostilities is limited to the Azovstal Steel Plant, this is does not correspond with reality," Andriushchenko said. "Last night there were fights on the Taganrog Street that is located five kilometers away from Azovstal."
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More than 10,000 civilians have been killed in the besieged city of Mariupol since the Russian invasion of Ukraine in February. Live updates.The city is crucial to Russia's effort to link Crimea with the Donbas region, where Moscow-backed separatists have established de facto republics that even Russia only recognized days before the war broke out in February.
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He said that "during the fighting, the occupiers shelled private residential houses with heavy artillery again. The shelling of the port area also continued."
On Saturday during a late-night address, Ukrainian President Volodymyr Zekensky called the situation in Mariupol "inhuman" and "as severe as possible." He and his administration had been trying every day to end the siege through both military and diplomatic channels, he said.
"Russia is deliberately trying to destroy everyone who is there in Mariupol," he said in the video address.
In a separate article posted on the presidential website, Zelensky said he was open to talks with Russian President Vladimir Putin -- but negotiations would be impossible if further Russian war crimes surface.
On Friday, the Russian military claimed it had made advances into Mariupol. "The grouping of Russian troops and units of the Donetsk people's militia have completely liberated Illich Steelworks from Ukrainian nationalists as a result of the offensive in Mariupol city," said Russian military spokesperson Maj. Gen. Igor Konashenkov in a statement. CNN cannot independently verify that claim.
New US sanctions will force Putin to focus on Russian economy over war, officials say: Live Ukraine updates
The newest round of sanctions against Vladimir Putin will force him to focus on holding together the Russian economy, officials say. Ukraine updates.The sanctions will target Russian supply chains that contribute to fueling the war, including “everything from looking at ways to go after the military devices that have been built to use not only in Ukraine but to project power elsewhere,” Adeyemo told the Associated Press.
This came two days after the last remaining defenders in Mariupol carried out a "risky maneuver" to join forces and consolidate their defenses, according to Ukrainian presidential adviser Oleksiy Arestovych. Both units have been involved in a last-ditch attempt to resist the Russian offensive.
However, one of the unit commanders in Mariupol acknowledged that some Ukrainian defenders had surrendered.
In a statement earlier this week, members of the Ukrainian Marines posted a video statement vowing to fight on "until the end," despite being surrounded by Russian forces and running low on supplies. "We did not give up our positions," the Marines said in the video.
Ukrainian officials have warned of a major humanitarian emergency in Mariupol as food and water run out, with electricity and gas cut, urging the establishment of evacuation corridors to allow civilians to escape.
But several attempts have failed -- including an evacuation effort on Saturday, with wet weather halting operations. Buses were unable to travel through a washed-out section of road between the town of Vasylivka and Zaporizhzhia to its north, according to a social media post by Ukraine's Deputy Prime Minister Iryna Vereshchuk.
Instead, people leaving Mariupol, Berdiansk, Tokmak and Enerhodar cities were told to get to Zaporizhzhia themselves.
No evacuation routes are planned for Sunday because Ukrainian officials have been unable to agree routes with the Russians. Vereshchuk said on her Telegram channel: "We again demand providing the humanitarian corridor to evacuate civilians, especially women and children from Mariupol."
She added: "Through the relevant international organisations we also demand from the occupiers to open a special corridor for the evacuation of wounded soldiers from Mariupol."
Vereshchuk said on Saturday that 170 people did manage to escape from Mariupol to Zaporizhzhia with their own means of transport of Saturday -- but most of Mariupol's residents remain stuck in the city, facing constant bombardment.
Live Updates | Ukraine says besieged Mariupol still holding .
KYIV, Ukraine — Ukraine’s deputy defense minister says that the key port of Mariupol is holding despite the continuing Russian attacks. Hanna Malyar said Sunday that the defenders of the key Sea of Azov port have tied up significant Russian forces besieging the city. She described Mariupol as a “shield defending Ukraine” that prevents the Russian troops encircling the city from advancing to other areas of the country. Malyar said that theHanna Malyar said Sunday that the defenders of the key Sea of Azov port have tied up significant Russian forces besieging the city. She described Mariupol as a “shield defending Ukraine” that prevents the Russian troops encircling the city from advancing to other areas of the country.