(Reuters) – Ukrainian President Zelenskiy called on Western politicians to quickly agree on an embargo of Russian oil, complaining that their failure to do so was costing Ukrainians their lives. Zelenskiy also said Russian banks should be completely blocked from the international finance system. FIGHTING * The eastern regions of Kharkiv, Donetsk and Luhansk are seeing the worst of the fighting in Ukraine after Russian forces withdrew from around Kyiv. * An International Committee of the Red Cross team has led a convoy of buses and private cars carrying more than 1,000 people to Zaporizhzhia af…