Russian air strikes on the port cities of Odesa and Mykolaiv in Ukraine have caused extensive damage and injured at least two people. Ukraine's air defenses shot down some of the missiles, but the damage indicates that not all of them were stopped. The attack follows Moscow's withdrawal from a deal allowing Ukraine's cargo ships safe passage and its vow of "retribution" for an attack on a bridge between Russia and the Moscow-annexed Crimean Peninsula. The Ukrainian government has condemned the strikes and the United Nations Security Council is expected to meet to discuss the situation.