KYIV, Ukraine — The Russian military claimed Sunday to have carried out deadly missile strikes on barracks used by Ukrainian troops in retaliation for the deaths of dozens of Russian soldiers in a rocket attack a week ago. Ministry spokesman Igor Konashenkov said the strikes were retaliation for Ukraine’s attack in Makiivka, in which at least 89 Russian soldiers died. The Donetsk regional administration said seven Russian missiles hit Kramatorsk and two more hit Konstantynivka, without causing any casualties.