Deputy Secretary of Security Council of Russian Federation Yevgeny Lukyanov said Tuesday that the delivery of S-300 missile system to Iran by Russia is certain.

Deputy Secretary of Security Council of Russian Federation Yevgeny Lukyanov said Tuesday that the delivery of S-300 missile system to Iran by Russia is certain.

Lukyanov told IRNA that the decision for delivery of this defense system has been made but implementation of this plan requires more time.

"As long as I'm concerned, the time for the delivery of this system to Iran has not come yet," Lukyanov said.

Russian President Vladimir Putin in April lifted the ban on delivery of S-300 missile system imposed by former president Dmitri Medvedev.

Deputy Foreign Minister for Arab African Affairs Hussein Amir-Abdollahian on Monday said, "The negotiations on the subject have ended successfully. I estimate that the S-300 delivery will take place in quite a short time."

"It will be done at the earliest possible opportunity," he added after meeting his Russian counterpart Mikhail Bogdanov.