Russia's President Vladimir Putin "probably" approved the fatal poisoning of former Russian agent Alexander Litvinenko with radioactive polonium in London in 2006, a public inquiry has found.
Russia's defence ministry says it has proof Turkish President Tayyip Erdogan and his family are involved in the illegal smuggling of oil from Islamic State-held territory in Syria and Iraq.
Russian President Vladimir Putin describes Turkey's downing of a Russian warplane as a "stab in the back", while Nato holds an extraordinary meeting to discuss the incident.
Turkish fighter jets shoot down a Russian warplane near the Syrian border after it allegedly violated Turkey's air space.
Islamic State has published a picture of what it claims is the bomb used to blow up a Russian passenger plane over Sinai, killing all 224 people on board.
The Kremlin dismisses allegations that Russian athletes engaged in widespread, state-sponsored doping that sabotaged the London 2012 Olympic Games.
A World Anti-Doping Agency commission is recommending that Russia should be suspended from international athletics following doping claims.
Moscow suspending passenger flights to Egypt after the Sinai air crash, just a day after suggesting Britain had acted prematurely by grounding jets.
Transcripts of cockpit recordings from the Metrojet plane which crashed in the Sinai desert with the loss of 224 lives are reported to reveal unusual sounds just before the disaster.