Russia has always criticized the Americans developed the missile defense system, citing the violation of the Soviet-American Treaty limiting strategic arms and the AMD Treaty. According to the Russian side, deployment of a missile defense system in depth of the leading NATO countries headed by the USA near Russian borders presents a heightened danger to the strategic nuclear forces of the country and destabilizes global military-strategic situation as a whole.
Despite numerous Russian proposals on cooperation in the field of missile defense, Washington did not accept any of them. The Pentagon continues its project despite the concerns of Russia. The initial groundwork for the deployment of information and intelligence and shock-military components of the anti-missile system was created in Europe. All of which are already deployed close to Russian borders. At the same time command and control centers for cooperation in the field of missile defense between the United States and their closest allies were established and tested in a real-time. While it has been devoted one’s attention to the deployment of the sea-based missile defense systems. They will form the basis of a global structure to intercept ballistic missiles, and because of its mobility will be a threat to Russian Intercontinental land and sea-based missiles.
According to the Russian side, the strategic missile defense system is not part of the defense, but strategic offensive potential, which works in conjunction with single offensive strike complexes.
This is clearly evidenced by the European missile defense system. Because at the moment there is no nuclear threat from Iran, but a missile defense system continues to build.
The situation with the deployment of a missile defense system in South Korea is similar now. The nuclear testing of North Korea is not a much-needed occasion for the deployment of a missile defense system, how any method of influence on Russia and China, which is important for the United States.
According to the Ministry of defense of South Korea and Pentagon anti-missile complex THAAD (Terminal High Altitude Area Defense) will be used solely for protection from the growing nuclear and ballistic potential of the DPRK. Russia and China do not agree with Washington. So, according to Beijing, the complex will upset the balance of power in the region and will not help to discourage the DPRK's nuclear program.
Despite Washington and Seoul promised that the missile defense system on the Korean Peninsula "is not directed against third countries", Moscow is also concerned about these intentions. Such actions threaten regional tensions", said the Russian Foreign Ministry.
According to experts, the US European missile defense system is a direct threat to Russia. The analysts have repeatedly pointed out that the giant structure of the European missile defense may be necessary if the US only attack on the country with the largest arsenals of such weapons (Russia or China).
All this allows concluding that the U.S. and its closest allies in Europe and Asia Pacific deployment of missile defense system is a threat not only for Russia but for other countries. "It is clear that we must ensure not only own safety, but it is very important to ensure the strategic balance in the world", said Russian President Putin.