Russia will take "proportionate measures" to cope with the anti-missile components deployed by the United States in central Europe, First Deputy Prime Minister Sergei Ivanov said on Wednesday.
"We are not satisfied at all over the explanations that this system is aimed against North Korea and Iran. That's something out of this world," the Itar-Tass news agency quoted Ivanov as saying.
Russia and the United States has been embroiled in a row in the last months on U.S. plans to locate 10 missile interceptors in Poland and a radar system in the Czech Republic.
Washington claimed the anti-ballistic missile system will prevent possible attacks from the Middle or Far East, but Moscow said that it perceived itself to be the very target. U.S. Secretary of State Condoleezza Rice and Secretary of Defense Robert Gates both failed to soften Russia's opposition after their Moscow tours earlier this year.
"If it is a tactical missile defense, one should say that we are in the process of consultations with NATO on the idea of linking the U.S. system Patriot and our S-300 and S-400 ... (It) would be able to provide protection from a so-called rogue state," the possible successor of President Vladimir Putin told a two-hour press conference.
Noting that discussions for a possible cooperation on the system was vague, the former defense minister said Russia was developing cooperation with the United States and ruled out a new round of arms race between the Cold War rivals.
"There will be no return to the Cold War or the arms race, at least on Russia's side." he said.