Russia recently offered S-300VM or SA-23 Gladiator to Iran attempting to cover up its failed deal to supply S-300 missile systems to Tehran, according to reports.
This S-300VM missile defense system can simultaneously destroy up to 24 aircraft within the range a range of 200 kilometers or intercept up to 16 ballistic missiles.
The deal will be finalized next month, according to reports.
Iran was initially interested in the S-300 missile complexes, signing in 2007 a contract worth $800 million for five missile defense systems of this make. But the deal was scrapped in 2010 by then-Russian President Dmitry Medvedev, who was unilaterally expanding on sanctions against Iran imposed by the UN Security Council.
Iran filed a $4-billion lawsuit against Russia in the international arbitration court in Geneva, which is currently pending review.
Moscow has struggled to have the lawsuit dropped, including by offering the Tor anti-aircraft systems as replacement, media reported earlier this month, adding that the offer was rejected by Tehran.
While the S-300 was developed for the use by missile defense forces, the S-300VM was specifically tailored for the needs of ground forces, which could also be an advantage for Iran, known for its large land force.
Russia is already exporting the S-300VM, having delivered two missile systems to Venezuela earlier this year. India and Turkey were also named as potential buyers, though no deals were formalized so far.