The U.S. decision not to conduct Phase Four of missile systems deployment in Europe does not eliminate all Russia's concerns and Russia will have to take measures in response in any case, Russian Foreign Minister Sergei Lavrov said.

"As President Putin said in Loch Earn, we are positive about the U.S. proposal for greater and even complete transparency of all these plans to us, but we have yet to think how it can be done, how it can be implemented in practical agreements," Lavrov said in an interview with Rossiya 24 television in St. Petersburg.

"We are exploring these ideas. This will not eliminate our concerns, and therefore response measures preventing the disruption of strategic balance will be needed in any case," Lavrov said.

"At this point, the U.S. is giving up Phase Four in Europe, compensating for this decision by the deployment of additional interceptors in Alaska, and plan to create another position district on the eastern coast," Lavrov said.   

"We have analyzed everything, but this does not eliminate our concerns because the system remains global and the deployment continues along the perimeter of our borders," he said.

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