More than 120 firefighters were trying to extinguish a blaze at an oil depot in the Russian city of Sochi that was sparked by a Ukrainian drone attack, regional Governor Veniamin Kondratyev said early on Sunday on the Telegram messaging app.

Ukraine says Russian missiles hit Mykolaiv, while Russia blames a huge oil blaze in Sochi on Ukrainian drones.

President Donald Trump said he's ordered two nuclear submarines to move in the "appropriate regions" in response to recent comments from Russia's Dmitry Medvedev.

In a chilling warning to Russia, President Donald Trump posted this afternoon on TruthSocial that he has ordered “two nuclear submarines to be positioned in the appropriate regions.”

Russia's Kamchatka Peninsula and surrounding Pacific Rim regions continued to experience seismic instability, with dozens of aftershocks being reported on Saturday by the United States Geological Survey (USGS).

Russian President Vladimir Putin said that Moscow hoped for more peace talks with Ukraine but that the momentum of the war was in its favour, signalling no shift in his stance despite a looming sanctions deadline from Washington.

We’re going to put sanctions,” the president said, even before a deadline he had given Russia this week to engage in cease-fire negotiations had passed.

Trump threatened 100% tariffs on countries that buy Russian oil unless Moscow reaches a major peace deal with Ukraine. Russia is the top supplier to India.