Russia was poised Monday to take the strategic city of Mariupol and unleash a massive offensive in eastern Ukraine, as fresh diplomatic efforts with Moscow to broker a peace offered little hope of de-escalation.

With the war grinding toward its seventh week, Austria's leader said he had raised alleged Russian atrocities as he became the first European leader to visit President Vladimir Putin since the invasion began.

Ukraine says more than 1,200 bodies have been found in devastated areas around Kyiv, with authorities pursuing "500 suspects" including Putin and other top Russian officials.

Seven bodies were found Monday under the rubble of two multi-storey buildings in Borodianka, in the Kyiv region, the state emergency service said, bringing the total to 19.

French investigators arrived in Ukraine to help probe suspected war crimes, as the European Union earmarked 2.5 million euros ($2.7 million) to the International Criminal Court for future Ukraine cases.

Russia is believed to be trying to connect occupied Crimea and Moscow-backed separatist territories Donetsk and Lugansk in Donbas and has laid siege to Mariupol, once a city of more than 400,000 people.

"Today will probably be the last battle, as the ammunition is running out," the 36th marine brigade of the Ukrainian armed forces said on Facebook.

"It is death for some of us, and captivity for the rest," the brigade added, saying it had been "pushed back" and "surrounded" by Russian troops.

Appealing to South Korea's National Assembly for military assistance, Ukraine's President Volodymyr Zelensky told lawmakers Russia had "completely destroyed" the city and "burned it to ashes".

"At least tens of thousands of Mariupol citizens must have been killed," he said.

Russian forces are turning their focus to the Donbas region in the east, where Zelensky said Russian troops were preparing "even larger operations".

- 'Logic of war' -

Weekend strikes hampered evacuations in and around Kharkiv in the northeast, killing 11 people including a seven-year-old, the regional government said.

Russian missiles nearly obliterated the airport of Dnipro, an industrial city of one million around 200 kilometres (125 miles) to the south, according to local authorities.

Lugansk governor Sergiy Gaiday said a missile strike Friday on a railway station in the eastern city of Kramatorsk that killed 57 people had left many afraid to flee.

"You are alive because a Russian shell has not yet hit your house or basement -- evacuate, buses are waiting, our military routes are as secure as possible," he wrote on Telegram.

Russia has denied carrying out the strike, as well as involvement in any other war crimes.

The US defence department reported a Russian convoy that had been observed heading for Izyum, an hour's drive north of Kramatorsk, saying it appeared to be a mix of personnel-carriers, armored vehicles and possible artillery.

On the diplomatic front, EU foreign ministers met Monday to discuss a sixth round of sanctions, with concerns that divisions over a ban on Russian gas and oil imports could blunt their impact.

Austrian Chancellor Karl Nehammer said his meeting with Putin at the Russian leader's residence outside Moscow was not "a visit of friendship," adding that he "mentioned the serious war crimes in Bucha and other locations".

He added that he was "rather pessimistic" about the chances of diplomacy, describing Putin as having "massively entered into a logic of war".

US President Joe Biden held virtual talks with Indian Prime Minister Narendra Modi, just weeks after saying New Delhi had been "shaky" in its response to the invasion.

"There were conversations about how to mitigate the destabilising impacts of Putin's war, including on food supply, where India is in a position to assist," a US official said.

- 'Prevent one massacre' -

The EU's top diplomat Josep Borrell said Russia is responsible for the escalating global food crisis because of its bombing of wheat stocks and preventing ships from carrying grain abroad.

And the World Trade Organization cautioned separately that the war could almost halve global trade growth this year.

Despite Kyiv's allegations of Russian atrocities, Ukraine's Foreign Minister Dmytro Kuleba told US news network NBC on Sunday he was still open to negotiating with Moscow.

"If sitting down with the Russians will help me to prevent at least one massacre like in Bucha, or at least another attack like in Kramatorsk, I have to take that opportunity," he said.

Bucha -- where authorities say hundreds were killed, some with their hands bound -- has become emblematic of the brutality allegedly inflicted under Russian occupation. 

More than 4.5 million Ukrainian refugees have now fled their country, the United Nations refugee agency said -- 90 percent of them women and children.

At least 183 children have died and 342 were wounded in Ukraine in 46 days of the Russian invasion, the prosecutor general's office said on Telegram.

 

 

 

Latest developments

Here are the latest developments in the war in Ukraine:

- Austrian leader 'pessimistic' -

Austrian Chancellor Karl Nehammer says he is "rather pessimistic" about the prospects for diplomacy ending the Ukraine conflict after his meeting with Russian President Vladimir Putin.

Describing Putin as having "massively entered into a logic of war", Nehammer tells reporters "peace talks are always very time-intensive while military logic says: 'Don't spend too much time and go directly into battle'".

The first European leader to meet Putin since the start of the Russian invasion, Nehammer says he "mentioned the serious war crimes... and stressed that all those responsible have to be brought to justice," also telling Putin of the "urgent" need for humanitarian corridors.

- French police arrive in Ukraine -

French police officers and forensic doctors arrive in Ukraine to help investigate the discovery of scores of bodies in civilian clothing scattered in Bucha and other towns around Kyiv after Russia's withdrawal from the region.

Ukraine says it has discovered 1,222 bodies in Bucha and other towns. 

- Ukraine still open to talks -

Despite the allegations of atrocities, Ukraine's Foreign Minister Dmytro Kuleba says he is still open to negotiating with Moscow.

"If sitting down with the Russians will help me to prevent at least one massacre like in Bucha, or at least another attack like in Kramatorsk, I have to take that opportunity," he tells US broadcaster NBC.

- No EU consensus on sanctions -

EU foreign ministers launch discussions on a sixth round of sanctions, but fail to find a consensus, including on sanctions on oil and gas, Josep Borrell, the bloc's top diplomat, says.

Pointing to an anticipated massive Russian assault on the eastern Donbas region, he says the main focus now needs to be on providing more military aid to Kyiv.

- Biden, Modi discuss Ukraine -

US President Joe Biden and Indian Prime Minister Narendra Modi have a "candid exchange of views" on the Ukraine crisis at a virtual summit, a senior administration official says, but there is no indication of significant progress toward a unified stance.

- Societe Generale leaves Russia -

French bank Societe Generale says it is ceasing its activities in Russia and selling its majority stake in Rosbank to an investment firm founded by an oligarch close to the Kremlin.

- Trade growth takes hit -

The war could almost halve world trade growth this year and drag down global GDP growth, according to the World Trade Organization.

- France expels six Russian diplomats -

France is expelling six Russians suspected of working as spies under diplomatic cover in Paris, after the French intelligence services uncovered a clandestine operation, the foreign ministry says.

- More than 4.5 million flee - 

More than 4.5 million Ukrainian refugees have now fled their country, the United Nations refugee agency says.

Ninety percent of those who have left are women and children.