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Let's take a look at the news from Ukraine.
Russian forces also bombed a school building where civilians were evacuated.
While Russia is carrying out airstrikes and bombings with hypersonic missiles, the UN says one in four Ukrainians has fled.
Correspondent Kim Ki-tae.
<Reporter>
A building in Mariupol, a port city in southeastern Ukraine, has been tanned.
The building was completely destroyed by the bombardment, revealing its interior.
People who have left the building are evacuating one after another.
The city council in Mariupol said that the bombed building was a school and about 400 residents had been evacuated.
Many of them are said to have been left under the rubble of the destroyed buildings, unable to escape.
The Russian army, which has been besieging Mariupol for over two weeks, continues to bombard civilians indiscriminately.
City officials say more than 2,500 civilians have been killed so far in Mariupol alone.
It is estimated that 1,200 people are still under the rubble at the theater shelter in Mariupol, which was bombed on the 16th.
The United Nations says 10 million people, about a quarter of Ukraine's population, have fled the country since Russia's invasion of Ukraine, with more than 900 civilian deaths.
In particular, more than 1.5 million of the refugees who have fled abroad are children, and they are concerned that they are at increased risk of being trafficked.