Tens of thousands of people have likely been killed in the southern city of Mariupol since Russia invaded, according to Ukraine's President Volodymyr Zelensky.
In a video meeting with South Korean lawmakers, he said: "Mariupol has been destroyed, there are tens of thousands of dead, but even despite this, the Russians are not stopping their offensive".
The BBC cannot verify Zelensky's claim, but what we do know is that refugees who have fled the besieged city have described the situation there as desperate.
SOURCE: BBC
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