Russia flattened part of an apartment building while residents slept on Friday in missile attacks near Ukraine's Black Sea port of Odesa that authorities say killed at least 21 people, hours after Russian troops abandoned a nearby outpost at Snake Island. Neighbors in the resort village of Serhiivka helped workers comb through the rubble of the nine-story apartment block, a section of which had been completely destroyed at 1:00 a.m. Walls and windows of a neighboring 14-story apartment had been damaged by the blast wave. Nearby holiday camps were also hit.