Lieutenant Illya Samoilenko of the Azov Brigade speaks to Sky News from beneath the Azovstal steel plant.
He says that his unit cannot surrender as his unit is part of a terrorist group in Russia, and that "every day may be our last".
Lt Samoilenko said that his life did not matter, and that there would be catastrophic consequences for Ukraine if the war is lost.
The Russia military had committed war crimes in Mariupol and would not want to keep his units alive, he said.
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