KYIV, Ukraine (AP) — Moscow promised retaliation Saturday after Ukrainian drones hit a Russian tanker in the Black Sea near Crimea late Friday, the second sea attack involving drones in one day.

Ukraine struck a major Russian port earlier on Friday.

Moscow strongly condemned what it sees as a Ukrainian “terrorist attack” on a civilian vessel in the Kerch Strait, said Russian Foreign Ministry spokeswoman Maria Zakharova.

“There can be no justification for such barbaric actions, they will not go unanswered and their authors and perpetrators will inevitably be punished,” she wrote on the Telegram messaging app.