Is this a warning shot? This chilling footage shows a Russian nuclear submarine launching a cruise missile from underwater to destroy a coastal training target. The 120-metre Severodvinsk submarine can be seen sinking slowly below the surface of the Barents Sea as part of Russian navy Arctic combat drills.

Then the Kalibr missile erupts from the waves in a plume of smoke and streaks away into the distance. A loud rumbling can be heard before the camera zooms in to show the launch site. It is the latest show of strength from the country’s military after a number of close passes by fighter jets near US planes and ships. FULL REPORT