Russian President Vladimir Putin said Wednesday that Russia’s goals in Ukraine are unchanged and will be accomplished, either through negotiations or by further military advances if diplomatic efforts...

He reiterated his demand for full control of Ukraine’s Donbas region “at all costs,” warning that Moscow is prepared to use force if necessary.

Ukraine said Monday it carried out an underwater drone strike that critically damaged a Russian Kilo-class submarine docked in the port of Novorossiysk, marking the first known attack of its kind.