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Heavy fighting rages on at a besieged Mariupol steel mill
5m 25s
Russian efforts to seize the Azovstal steel plant in Mariupol are meeting fierce resistance Thursday, as Ukrainian fighters continue their last-ditch stand in the port city. This as the United Nations announced a new operation to evacuate some of the 100,000 people still trapped in Mariupol. Nick Schifrin reports again from Kyiv.