Ukrainian President Volodymyr Zelenskiy is due to address Australia's parliament as Russia's bombardment on the outskirts of Kyiv continues.
Ukraine's ambassador-designate to Australia Vasyl Myroshnychenko - who arrived in Sydney on Saturday after escaping Kyiv - expects the president will repeat calls to establish a no-fly zone over Ukraine during his speech.
The ambassador said Ukraine is concerned Russian missiles could inadvertently hit one of the country's five nuclear power plants, threatening the rest of Europe.
"If we have a no-fly zone (over parts of Ukraine) this is what is going to protect the sky and this is what is going to protect the safety and security of the entire Europe," he told ABC Radio on Thursday.
"Despite any news that there is any progress in the peace negotiations we are very sceptical about the true nature and true intentions of Russia."
Mr Myroshnychenko says Australia should expel the Russian ambassador to send a statement of support for Ukraine.
"Every time I watch these harrowing pictures and footage from Ukraine (of bombings) ... I believe that the Russian ambassador should be expelled," he said.
Prime Minister Scott Morrison and Opposition Leader Anthony Albanese will both speak ahead of Mr Zelenskiy's address on Thursday.
The prime minister said the president would undoubtedly make more requests for support and Australia would respond in a practical way.
"Australians have been inspired by President Zelenskiy's resilience and courage, as he, his government and the people of Ukraine defend their homeland against Russia's brutal, illegal and unjustified invasion," Mr Morrison said in a statement on Thursday.
"Australia stands with Ukraine against Russia's aggression."
The address comes a day after the Australian Senate passed a motion condemning Russia and countries facilitating the Kremlin's invasion of Ukraine through economic and military support.
Australia is providing $91 million in military assistance, $65 million in humanitarian assistance and 70,000 tonnes of thermal coal to meet Ukraine's energy needs, as well as temporary protection visas and support for Ukrainian community groups in Australia.
There are also targeted sanctions on individuals and entities, the prohibition of energy, oil and gas products from Russia, and a ban on exports of alumina and bauxite to Russia.
The listing of more than 500 individuals and entities is the largest-ever imposition of sanctions by Australia against a single country.
Mr Zelenskiy's address will take place in the House of Representatives at 5.30pm AEDT on Thursday via video link.
It is expected to be attended by members of the Ukrainian-Australian community as well as ambassadors from various countries.
with Reuters
© AAP 2022