"The Iranian Defense Ministry is following up the contract on the delivery of the (missile) systems and Russia is also fulfilling its undertaking," Brigadier General Esmayeeli told reporters in Tehran on Friday.

He did not mention the exact date of the delivery of S-300 missile systems to Iran by Russia.

Brigadier General Esmayeeli pointed to Iran's air defense capabilities, and said, "We have made a lot of efforts in this regard and our reliance is on home-made products… ."

In mid-April, Iranian Defense Minister Brigadier General Hossein Dehqan announced that Tehran and Moscow have worked out an agreement on the delivery of the Russian-made S-300 air defense systems to Iran and are now having final discussions over the date of the delivery.

Russian President Vladimir Putin on April 13 removed the ban on the delivery of the missile shield to Iran.