Russia has placed more than 38,000 troops, as well as submarines, warships, and planes on alert across the country following orders from President Vladimir Putin.
According to a statement issued by the Russian Ministry of Defence, Putin has ordered the Northern Fleet, Western MD formations and Airborne Troops to be put on full combat alert for surprise inspection.
Russian defence minister Sergei Shoigu said that 38,000 servicemen, 3,360 vehicles, 41 combat ships, 15 submarines and 110 aircraft and helicopters are part of the inspection.
During the surprise combat readiness inspection of the Russian Navy's Northern Fleet, crews of Il-38 antisubmarine aircraft and Ka-27 helicopters have started off to the Barents Sea and began their search for submarines.
According to the The antisubmarine activities will use hydro-acoustics and radar as well as antisubmarine armament at training targets.
Meanwhile, the Northern Fleet marine brigade has marched to the embarkation area of large landing ships. The brigade units arrange communication and control centres, ensure the security of the departure area and prepare special equipment for embarkation.
To be continued until the end of this week, the exercises come at a time when Nato is holding its drills in the Black Sea. Warships from six nations are participating in the Nato event.
The inspection also coincides with the anniversary of Crimea's annexation into Russia from Ukraine.
RIA News agency quoted Shoigu as saying: "New challenges and threats to military security require the armed forces to further boost their military capabilities. Special attention must be paid to newly created strategic formations in the north."
Image: Russian Navy's anti-submarine aircraft participating in the inspection. Photo: courtesy of Ministry of Defence of the Russian Federation.