Washington says a ship carrying more than 11,000 kilograms of low-enriched uranium material left Iran for Russia on December 28.
For New Year's, the Kremlin is giving Russian bureaucrats collections of the "world-changing words" of Vladimir Putin.
The Daily Vertical is a video primer for Russia-watchers that appears Monday through Friday.
Russian Orthodox Church spokesman Vsevolod Chaplin, one of the most visible and controversial figures in the Moscow Patriarchate, was fired last week.
Vlad Kolesnikov, a Russian teenager whose life unraveled after he publicly supported Ukraine, was found dead on December 25. RFE/RL's Claire Bigg had been corresponding with him in the weeks before his death.
The Taliban has denied that it held talks with Russian officials about efforts to combat Islamic State (IS) militants in Afghanistan as a British newspaper reported that President Vladimir Putin had met the group's leader earlier this year.
Russian Foreign Minister Sergei Lavrov says that Russia and Qatar have agreed to encourage the Syrian opposition to sit down for talks with the Damascus government.
Russian Foreign Minister Sergei Lavrov met with a leader of Turkey's Kurdish political party, who joined Moscow in criticizing Ankara for shooting down a Russian warplane last month.
One of three suspected rebels killed in fighting in the North Caucasus was trained by "terrorists" in Syria, Russian authorities said December 24.
Bulgaria's ethnic Turkish party expelled its leader on December 24 because he took the side of Turkey in Ankara's diplomatic spat with Moscow over a downed Russian fighter jet.
Alexander Bortnikov, the head of Russia's Federal Security Service, said Russia had identified groups behind the explosion of a Russian airliner over Egypt's Sinai peninsula, killing all 224 on board.