Russia and US-led NATO have been in a long dispute over US missile shield plans in Europe, which the United States said was aimed to defend its allies from possible missile threats emerging from Iran and North Korea.
Russia viewed the deployment of the missile shield near its borders as a threat to its national security and in 2011 then-President Dmitry Medvedev announced a set of measures to counter the US-proposed missile defense system in Europe. The measures particularly included the construction of new air-defense radar systems and deployment of Iskander missiles in Russia’s Kaliningrad Region, which borders on Europe.
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