Sergey Ryabkov told ABC News Moscow cannot compromise on key territories.

Ukraine claimed it carried out an underwater drone strike on Dec. 15, the first such attack in maritime warfare, that critically damaged a Russian Kilo-class attack submarine at the Russian port of Novorossiysk,

The U.S. has agreed to provide unspecified security guarantees to Ukraine as part of a peace deal to end Russia's nearly four-year war, and more talks are likely this weekend, U.S. officials said Monday following the latest discussions with Ukrainian President Volodymyr Zelenskyy in Berlin.

Donald Trump's envoy will meet the Ukrainian president and European leaders in Berlin to discuss the latest peace plan.

Germany is ramping up its military operations amid security concerns over the Russia-Ukraine war. German Defense Minister Boris Pistorious talked about the rearming on "60 Minutes." Isaac Stanley Becker,

By Andrew Osborn MOSCOW, Dec 15 (Reuters) - The founder of Russia's opposition Yabloko party, which wants a ceasefire in Ukraine, has said his party will keep campaigning despite the arrest of two senior figures,

Russia's central bank says it is suing Belgium's Euroclear in court following an EU bid to use Russian assets to aid Ukraine.