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Russia's ultimatum to siege the southern Ukrainian port city of Mariupol and surrender it, but Ukrainian President Zelensky himself refused to do so.
Ukraine has called for Russia to commit “national terrorism”.
Reporter Han Se-hyeon reports.
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Ukrainian President Zelensky has repeatedly reaffirmed his will to fight back decisively without yielding to Russian aggression.
The Russian military had previously issued an ultimatum to surrender and leave Mariupol by 6 pm yesterday (21st) our time, but this was officially rejected.
"Russia wants to hand over Kharkiv, Mariupol and the capital Kiiu," Zelensky said in an interview with the local media.
The Russian attack on Mariupol over the past three weeks has reportedly left 400,000 people without food and water.
Ukraine's government has claimed that 150 children have been killed and more than 400 schools and 110 hospitals destroyed since the invasion of Russia.
He also accused Russia of committing a “national terrorism”.
[Lesnikov / Ukrainian Defense Minister: This is 'national terrorism'.
We're going to do more terrorism, so we need to stop Russia.
It can even attack other countries.]
In the midst of this, the Russian Foreign Ministry summoned the US ambassador to Russia to formally protest on the 16th, when US President Biden called Putin a 'war criminal'.
Russia's foreign ministry said, "The US president's remarks put Russia-US relations on the brink of severance."
President Biden later issued a statement urging Russia to prepare for a malicious cyberattack.