WATCH: Russian Military Vehicles Storm Beach

Russia has released footage of two of its armoured personnel carriers storming a beach.

The video also shows the country's Baltic Fleet crews live-firing KPVT heavy machine guns.

It comes as a US official says the country's intelligence agencies have concluded that Russia has deployed a cruise missile, in violation of a Cold War-era arms control treaty. 

Russia's air force was ordered to prepare for a "time of war" last week, meanwhile.

President Vladimir Putin ordered a "snap check" of the nation's armed forces, according to defence minister Sergey Shoigu.

More: Russia Deploys Missile 'In Violation Of Treaty'