Russia has delivered the missile part of S-300 surface-to-air defense system to Iran, moving to finish the delivery of all divisions of the system to Tehran by the end of this year. According to Tasnim news agency, the first shipment of missiles of S-300 missile system has recently entered Iran that shows Iran's determination to equip its air defense circle with this system.
Under an initial contract signed in 2007, Russia was required to provide Iran with at least five S-300 defense system batteries. But the contract, worth more than $800 million, was revoked after then-President Dmitry Medvedev banned the supply of those systems to Tehran in 2010.
Later, Iran lodged a $4 billion lawsuit at an international court in Geneva against Russia’s arms export agency. However, Russian President Vladimir Putin decided in April last year to lift the ban on the S-300 missile system delivery to Iran.
Iran received the first parts of S-300, the missile tubes and radar equipment, from Russia in April.