A massive oil depot fire raging near Russia's Black Sea resort of Sochi has been blamed by Russian authorities on a Ukrainian drone attack. Sochi's nearby airport has suspended flights. Krasnodar Region Governor Veniamin Kondratyev said on Telegram that drone debris hit a fuel tank and 127 firefighters were tackling the blaze.

A site hosting Iranian drones was among facilities struck overnight by Ukraine, according to its General Staff.

More than three years into Russia's full-scale invasion, Ukrainians across the country retreat each night to bomb shelters and metro stations in a nightly ritual.

Ukrainian President Volodymyr Zelenskyy's top adviser urged the U.S. to "strangle" Russia's economy by imposing secondary sanctions on Moscow's trading partners.

President Trump says he has ordered two nuclear submarines to be positioned in "appropriate regions" after what he called "highly provocative statements" from Russia's former president. CBS News Pentagon reporter Eleanor Watson has the latest.

Trump orders nuclear submarines repositioned after Russian tensions escalate, while implementing new tariffs on Canada and other countries this week.

The move means Trump is walking back the 50-day deadline he set this month in response to Russia's continued bombing of Ukrainian cities.

President Trump’s U.S. Special Envoy Steve Witkoff is set to visit Russia this week after the president issued an ultimatum for Russian President Putin, with the goal of achieving a ceasefire agreement for the war in Ukraine by Friday.

U S President Donald Trump on Sunday said special envoy Steve Witkoff may travel to Russia, potentially on Wednesday or Thursday, as he warned that he would impose sanctions if Moscow does not agree to a ceasefire in the war in Ukraine before Friday.