The arrest announcement follows the death of Russia's Lt. Gen Igor Kirillov, who was killed on Dec. 17 by a bomb hidden on an electric scooter parked outside his apartment building.

Finnish authorities have detained a Russia-linked ship as they investigate whether it damaged a Baltic Sea power cable and several data cables, according to police and news media reports, in the latest incident involving disruption of key infrastructure.

Russia is willing to work with Donald Trump's incoming administration to improve relations if the U.S. has serious intentions to do so but it is up to Washington to make the first move, Foreign Minister Sergei Lavrov said on Thursday.

Russia's economy will be under major strain in 2025, economists told BI. One said stagnation was similar to the USSR at the start of the 1980s.

An Azerbaijan Airlines plane crash on Christmas Day has prompted speculation the plane was shot down by Russia after it took a detour of hundreds of miles in the wrong direction and crash-landed with holes in the fuselage.

Russia launches a Christmas Day missile attack on Ukraine as the war enters its third year. NBC News’ Erin McLaughlin reports on the shifting battleground there and in Washington, D.C.

Moscow again struck Ukraine’s energy infrastructure, part of an effort to wear down the country. “In the trenches, there are no holidays,” one man said.

Zelensky warns of greater military cooperation between Moscow and Pyongyang, including sending more troops and military equipment

Russia attacked Ukraine's energy system and some cities in an "inhuman" Christmas Day assault, Ukraine's President Volodymyr Zelenskyy said.

Russia's aviation watchdog said on Thursday all four Moscow airports had resumed work after the lifting of temporary restrictions that were introduced to ensure the safety of civil aircraft flights. "Aircraft crews,

Russia’s top security agency says that it has arrested several suspects accused of involvement in an alleged Ukrainian plot to assassinate senior military officers.