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Kyiv Mayor and former boxer Vitali Klitschko said that the city is bracing for a brutal winter. 500 shelters for 3.6 million people and a strained power grid could mean the 'apocalypse,' he said. But he appeared to fire back at Ukrainian President Volodymyr Zelenskyy, who suggested Kyiv was unprepared.The mayor of Kyiv clapped back at Ukrainian president Volodymyr Zelenskyy, acknowledging that an...