A 35-year-old man and his 4-year-old son were killed in a suburb of the Ukrainian capital Kiev during a Russian missile attack, authorities said on Sunday. Three other people were seriously injured on Saturday night when fragments of a missile fell on residential buildings in Brovary, east of the capital city, the State Emergency Service of Ukraine said. A father and son were found dead under the rubble of a building, the volunteer service said. In Russia, authorities on Sunday said at least 13 people were injured after debris from a downed Ukrainian missile fell on an apartment building in Ku…