A 82-year-old man has been charged with murder after the body of a "severely emaciated" woman was found in a home in Sydney south-west.

NSW Ambulance paramedics were called to a home on Pandora Street, Greenacre, just before 11am yesterday after reports of a medical episode.

Paramedics called police after they found the body of a severely-emaciated 60-year-old woman.

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An 82-year-old man was arrested at the home.

He is alleged to have been the woman's sole carer.

He was taken to Bankstown Police Station and charged with murder.

The man has been refused bail and will appear at Parramatta Bail Court today.

Police are probing links between a homicide investigation at a Coromandel home and a nearby car crash, the Herald understands.Police yesterday launched a homicide investigation into the death of a man at a rural property on Manaia…

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The UN migration agency said nearly 6.5 million people have been displaced inside Ukraine, on top of the 3.2 million who have already fled the country.

That means that around a quarter of Ukraine’s 44 million people have been forced from their homes.

The estimates from the International Organisation for Migration suggests Ukraine is fast on course in just three weeks toward the levels of displacement from Syria’s devastating war, which has driven about 13 million people from their homes both in the country and abroad.

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The findings come in a paper issued Friday by the UN Office for the Coordination of Humanitarian Affairs.

The projections also found that “over 12 million people are estimated to be stranded in affected areas or unable to leave due to heightened security risks, destruction of bridges and roads, as well as lack of resources or information on where to find safety and accommodation.”

The paper cited the IOM figures as “a good representation of the scale of internal displacement in Ukraine — calculated to stand at 6.48 million internally displaced persons in Ukraine as of March 16.”

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UNHCR, the UN refugee agency, has said fighting that has followed Russia’s invasion of Ukraine on February 24 has sparked Europe’s gravest refugee crisis since World War II.

“By these estimates, roughly half the country is either internally displaced, stranded in affected areas or unable to leave, or has already fled to neighboring countries,” he said, alluding to Ukraine’s population of about 44 million before the war began.

The paper said that 9.56 million people have been displaced by the war so far, as of Wednesday, and another 2.2 million people were considering leaving.

READ MORE: China decries 'conflict' during video call between Joe Biden and Xi Jinping

IOM estimates that more than 3 million people had fled abroad as of Wednesday.

UNHCR, in its latest figures released Friday, said more than 3.2 million people have fled Ukraine.

President Joe Biden sought to use a 110-minute video call on Friday to dissuade his Chinese counterpart from assisting Russia in its grinding war with Ukraine, a pivotal moment that could determine the trajectory of the bloody conflict.

Biden "described the implications and consequences if China provides material support to Russia" in his call with Chinese President Xi Jinping, the White House said.

"The President underscored his support for a diplomatic resolution to the crisis," the White House said.

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Biden was "direct," "substantive" and "detailed," a senior administration official said in a call with reporters Friday afternoon.

The bulk of their discussion centred on the war in Ukraine, and the implications the crisis would have both on US-China relations and the "international order," the official said.

Biden provided an assessment of Putin's actions in his conflict with Ukraine and "made clear" the implications and consequences of China potentially assisting Russia in its war.

The administration did not immediately publicly detail what those consequences would be, either in the written readout from the meeting or in the call with reporters.

Biden's goal in speaking with Xi directly was partly to ascertain where exactly he stood. China's statements about the war in Ukraine have stopped short of denouncing the invasion but also not offered explicit support.

Xi has offered nominal backing for mediation efforts between Russia and Ukraine, but China has also fanned Russian disinformation about the conflict.

That all left Xi in a murky position, which the United States hoped to clarify through Biden's call.

READ MORE: China decries 'conflict' during video call between Joe Biden and Xi Jinping

Already, the US had warned European and Asian allies that China had expressed openness to providing Russia with military and financial assistance, which Moscow had requested as its halting invasion stretched into a third week.

But officials said Beijing was still formulating how to respond, upping the stakes for Biden's intervention.

China began offering its own account of the video call moments after it began, describing Xi's message to Biden on state television.

"We must not only lead the development of China-US relations down the correct path, but also shoulder our international responsibilities and make efforts for world peace and tranquility," Xi said on the video call, according to CCTV.

"The world is neither peaceful nor tranquil," Xi acknowledged.

"The Ukraine crisis is something we don't want to see."

At the same time, the Chinese readout did not explicitly blame Russia for the conflict nor denounce Russian President Vladimir Putin's actions on the ground.

The United States has watched warily as Xi cultivates a close partnership with Putin, believing the alliance of authoritarian leaders is positioning itself to oppose the United States militarily and economically.

During high-profile talks in Beijing last month, Xi and Putin sealed their affiliation, declaring in a lengthy statement the relationship was limitless.

Yet Russia's invasion of Ukraine has unsettled Chinese leaders, in part because the Russian military has suffered surprising losses and advanced more slowly than many expected.

US officials have also said Xi was surprised by unity among Western and Asian nations in imposing punishing sanctions on Russia.

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That combination of factors could lead China to reevaluate its potential involvement in the Ukraine war, US officials have said.

That made the timing of Biden's call with Xi critical as the US works to contain the bloodshed in Ukraine.

Ahead of time, American officials declined to say what specific threats Biden might make to convince Xi to withhold support for Russia.

There have been ongoing discussions within the administration about potential steps, including sanctions.

It is widely assumed Xi will secure a historic third term in power during the Communist Party's 20th National Congress in Beijing this fall.

During such an important year, western experts believe Xi will be particularly mindful of the economic risks posed by secondary sanctions.

Trade between the European Union and China topped $1079 billion last year, and US-China trade was over $1012 billion, according to China's official data, while its trade with Russia was just under $2024 billion.

At the same time, China's economy is growing more slowly than it has in decades.

Ahead of their conversation, American officials made clear the stakes of the conversation.

"The ask is that China needs to stand on the right side of history," deputy secretary of state Wendy Sherman said.

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Peter Paul Rubens' 17th century masterpiece Portrait of a Lady has sold for the equivalent of $4.5 million at a Warsaw auction, becoming the most expensive artwork ever bought on the Polish art market, the auction house said.

The painting sold for 14.4 million zlotys, auction fee included, at an Old Masters auction Thursday night at the Desa Unicum.

It was the first painting by Rubens ever to appear on the Polish market. It was put on sale by a British citizen.

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Prior to the auction, the value of the Flemish master's oil-on-canvas portrait of a dark-haired woman in a rich black velvet dress had been estimated at between 18 million and 24 million zlotys ($5.7 million-$ 7.6 million).

Experts say the work, painted by Rubens around 1620-25, with involvement from his Antwerp workshop, could be a likeness of the painter's first wife, Isabella Brant, or of a member of the Duarte family of jewellers, who were Rubens' neighbours.

The model could also possibly have come from the Spanish royal court.

In the past the painting has belonged, among others, to 17th-century British painter Sir Peter Lely. It was last shown in public in 1965.