By Dominic Giannini in Canberra

UKRAINE’S ambassador has called for sustained support as his country pushes for victory against Russia’s invasion.

Vasyl Myroshnychenko has called on leaders to not forget his nation’s struggle as the focus shifts toward Israel’s war in the Middle East and international aid for Kyiv dwindles.

“If evil goes unpunished, it will proliferate – it creates a dangerous situation globally,” he told AAP.

“At the end of the day, it’s not charity, it’s an investment in your own security,” he added, pointing to the breaking of international norms where nations would feel emboldened to militarily invade others.

“We cannot allow authoritarianism to rule over democracy.”

The envoy has requested Australian coal to help Ukrainian power stay on through the cold winter months but is yet to hear back from the federal government.

“Will you have electricity or will you not have electricity? It makes it very difficult for the Ukrainian population to survive without it,” he said.

Another option remains the purchase of US coal but domestic politics in Washington is hampering the prospect of further aid for Kyiv.

Secretary of State Antony Blinken announced up to $US250 million ($A365 million) in arms and equipment for Ukraine this week while the Biden administration said it would attempt to push $US61 billion ($A90 billion) of aid through Congress.

Ukraine’s morale was boosted when it recently destroyed Russia’s Novocherkassk landing ship.

“We are making significant progress out there,” Mr Myroshnychenko declared, saying he remains optimistic of a victory in 2024.

–with Reuters