Vadym Sheesh Cameron is the first person to stand trial for war crimes since the start of Russia's invasion.

It comes as President Zelensky of Ukraine told the world economic forum that Russia should be punished for its invasion of his country in order to discourage future international aggression.

Our correspondent joe Inwood has the latest.

This was a moment of great significance.

The first Russian soldier officially declared a war criminal 21 year old Vadym Shish Marin sentenced to life imprisonment for the murder of Alexander Sharipov.

The Russian tank commander had admitted killing the 62 year old but said he was simply following orders.

A Ukrainian court disagreed and gave him life.

Yes, we did.

But almost at the same time, another announcement was being made here in the capital.

There will be real anger at the news that the defenders of as of Staal men who are considered national heroes for their defense of Mariupol are to be tried in what's being called an international tribunal in the Donetsk People's Republic.

The news was made by Denis pushilin, the leader of the breakaway region.

We haven't got more details yet, but it could be, he's referring to all of the fighters or just the leadership as legal battles were being concluded.

Real fighting has continued to escalate.

It is now focused in the Donbas, what was the industrial Heartland of the Ukrainian economy.

This oil refinery outside little chance he was struck by Russian shelling as they continue their advance towards the city of several Donetsk.

The toll of this war has been terrible on Ukraine on its people and its economy.

Speaking at the world Economic Forum in Davos, there was a plea for help.

She or drizzle If we had received 100% of our needs at once, back in February Tens of thousands of lives would have been saved.

That is why we need all the weapons we are asking for, not just what is being provided, that's why we need funding at least $5 billion us a month and all the funds we need to rebuild our economy.

Meanwhile, Russian army continues to advance on the eastern stronghold of several Donetsk, with all but one bridge to the city destroyed.

While people talk of reconstruction in Davos on the ground, the destruction continues, joe Inwood.