"I think it could happen in 2.5 years or in 15 years. As part of the package, sanctions will force Moscow to leave Donbas. Crimea is a different case. Sanctions are also important in the context of our interests, as the Kremlin’s policy is aggressive. Today, Russian military complex ranks second in the world after American in terms of power. But a powerful army and a powerful navy are impossible without a strong economy. We know for sure that sanctions cause damage to the Russian economy. This is significant," he said.