Russia has deployed anti-aircraft missile systems around Moscow to protect the capital from attack in the latest sign Vladimir Putin is preparing for war.

The s-400 Triumph air defence system has been providing air cover for Russian forces in Syria since November, and is now being deployed on home soil.

It is capable of hitting moving airborne targets including planes and incoming missiles and has a range of 400km.

The news has emerged the day the US sent more than 3,000 troops to Poland in response to Nato’s concern Russia was becoming more aggressive.

Defense Ministry’s Department of Information and Mass Communication told Interfax: ‘The SAM combat squads of the Moscow Region aerospace forces have put the new S-400 Triumph air defense missile system into service, and have gone on combat duty for the air defense of Moscow and the central industrial region of Russia.

‘The main task of the anti-aircraft missile troops of the Russian Aerospace Forces is air defense and protecting vital state, military, industry and energy facilities, as well as the Armed Forces troops and transport communications, from aerospace attacks.’

The S-400 was designed as a protective mechanism against airstrikes according to RT ( via dailymail.co.uk ).

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