the Special Purpose Command. On 8 February 2008 Lt. Gen. Vladimir Sviridov announced that Russia would be replacing the S-300 systems in the Northwest of Russia with the S-400. Military experts expect Russia's use of the system as a major component of their ballistic missile defense until 2020. In September 2006 Deputy Prime Minister Sergei Ivanov announced the purchase of 18 S-400 battalions for internal defense for the period 2007–15. On 17 March 2009 Russia's defense minister announced that a second regiment equipped with advanced S-400 Triumf air defense missile systems had been put into combat service. On 26 August 2009 the General Staff said S-400 systems had been deployed in the Russian Far East to counter possible North Korean missile tests and prevent fragments from falling onto Russian territory. In February 2011 a second unit of S-400 missile systems was deployed at Dubrovki, north of Moscow. The 210th Air Defense Regiment consists of two battalions, each deploying eight launch points of four missiles. In February 2011, it was also announced that the missile system will be deployed in the southern Kuril Islands. The Baltic Fleet in Kaliningrad received S-400 SAM systems which went into operational status in April 2012. One S-400 divizion is deployed on combat duty in the Russian far east city of Nakhodka. As of 2012, one system (in Electrostal) was operational, with three more S-400 battalions being deployed. All 56 battalions will be delivered by 2020. Russia is also setting up two regiments of S-400 in the Eastern Military district. As of September 2013 the Russian Armed Forces had five S-400 regiments: two in Moscow, one in the Pacific fleet, one in the Baltic Fleet, and one in the Southern Military District. Starting in 2014, the army was to receive two to three sets of regimental units of S-400 systems every year. Another S-400 regiment was to be put on combat duty around Moscow by the end of 2013. Russia eventually plans to deploy 28 S-400 regiments by 2020, each comprising two or three battalions with four systems each. Russia plans to recommission the Kirov-class battlecruiser Admiral Nakhimov in 2023. Plans called for the installation of the 48N6DMK anti-aircraft missile derived from the land-based S-400. This will extend the Kirov'''s air defense from to . Adm. Vladimir Korolev stated at that time that Russia's Northern Fleet's Coastal Forces had deployed S-400s. On 1 March 2016 the