 A huge plume of dark smoke was seen rising in the Crimean port of Sevastopol on April 29, after an alleged drone attack on the city. Sevastopol, which is on the Crimean peninsula that Russia annexed from Ukraine in 2014, has come under repeated air attacks since Russia sent troops into Ukraine last February. Russian officials have blamed the attacks on Ukraine. The Russian Defense Ministry on April 24 said it repelled an attack by naval drones on its Black Sea Fleet stationed in Sevastopol in the early hours of the day. Soon after, the Russian Defense Ministry said that three Ukrainian naval drones had unsuccessfully attempted overnight to attack Russia's Black Sea Fleet in Sevastopol.