Russia says it has for the first time struck Islamic State targets in Syria with missiles fired from a submarine.
Defense Minister Sergei Shoigu said on December 8 that the Kalibr cruise missiles were launched from the Rostov-on-Don submarine in the Mediterranean, successfully hitting their designated target.
Speaking during a televised meeting with President Vladimir Putin, Shoigu said Tu-22 bombers also took part in the latest raids, performing 60 combat sorties in the last three days.
The Pentagon said Russia gave advanced notice that it would be carrying out the strikes.