Russian military

Russian Air Force launched an air strike, Moscow immediately called Ankara

According to "Russia Today", the Turkish-funded militants have been targeting Syrian army positions.
The Russian ministry adds that Turkish forces ceased the attack after Moscow made contact with Ankara.
Turkey should suspend support for "terrorist groups" in Syria's Idlib province, Russia's Defense Ministry said.

Action Involving Russian and American Planes over the Black Sea (Video)

The US has accused Russian military of dangerously intercepting a US-based airplane EP-3E Aries in the international airspace over the Black Sea by a Russian Su-27 fighter.

An incident report was published by the US Navy press service in Europe and Africa on Monday.

On 5 November 2018:

Syria Downs Russian Plane, Moscow Blames Israel (Updated)

AFP - Syria accidentally downed a Russian military aircraft with a crew of 15 onboard when its air defences went into action against an alleged Israeli missile strike, the Russian army said Tuesday.

The incident, which happened late Monday, was the worst case of friendly fire between the two allies since Russia's game-changing military intervention in September 2015.

Donald Trump Threatens Syria Strike, Suggests Russia Shares Blame for Chemical Attack

Promising a decision within hours, U.S. President Donald Trump threatened a military strike against Syria and declared on Monday that Russia or any other nation found to share responsibility for Saturday's apparent chemical weapons attack on civilians will "pay a price."

UK Blames Russia For Cyber Attack

Britain blamed Russia on Thursday for a cyber-attack last year, publicly pointing the finger at Moscow for spreading a virus which disrupted companies across Europe including UK-based Reckitt Benckiser, according to Reuters. 

Russia denied the accusation, saying it was part of "Russophobic" campaign it said was being waged by some Western countries.