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Terrified ukrainians running for their lives, seeking safety anywhere they can. the refugee agency saying more than 100,000 ukrainians are on the move since the invasion began more than 24 hours ago. in kharkiv, many residents seeking safety underground in the subway system. cnns clarissa ward getting a firsthand look. c cha ris a? >> don, this time last night, the square behind ne the center of the city was lit up. the streets were quiet and tense but nothing like this. there is now a curfew in...