Mstyslav Chernov, the director of the award-winning documentary “20 Days in Mariupol” speaks to CNN about support for Ukraine as the country enters its third year of war since Russia’s full-scale invasion.Mstyslav Chernov, the director of the award-winning documentary “20 Days in Mariupol” speaks to CNN about support for Ukraine as the country enters its third year of war since Russia’s full-scale invasion.
