TEHRAN, Aug. 17 (Xinhua) -- A senior Iranian lawmaker said Wednesday that the objectives of Iranian and Russian officials' recent meeting is to discuss the Russians' "step-by-step" approach proposal to resolve Iran's nuclear stand-off and Iran-Russia's S- 300 missiles deal, the local Mehr news agency reported. Deputy Chief of National Security and Foreign Policy Commission of Iran's Majlis (Parliament), Esmaeil Kowsari, said that the important objectives of Russian Security Council Secretary Nikolai Patrushev's visit to Tehran are to discuss Russia's proposal on Iran's nuclear issue and also Iran-Russia's 2007 deal of S-300 air defense system, said the report.
Patrushev, heading a delegation, arrived in Tehran on Monday for talks including Iran's nuclear issue.
Iran inked a deal with Russia to purchase the S-300 weaponry systems in 2007, however, Russia scrapped plans to deliver the air defense missile systems to Iran as it falls under the UN sanctions, Russian Chief of General Staff Nikolai Makarov said in September.
In mid-July, Russian Foreign Minister Sergei Lavrov proposed a new "step-by-step" approach to restart the talks between Iran and West on the country's controversial nuclear issue.
Kowsari told Mehr that also Iran's Foreign Minister Ali-Akbar Salehi's visit to Russia is aimed at negotiations on Iran's nuclear issue and the nuclear talks with G5+1, comprising the five permanent members of the UN Security Council plus Germany.
Salehi arrived in Moscow on Tuesday for a two-day visit and will meet his Russian counterpart Sergei Lavrov to discuss the upcoming launch of the Bushehr nuclear power plant and the settlement of the nuclear issue.
Kowsari further added that the Russians have breached the agreement on delivering S-300 missiles system to Iran and they should be accountable.
The S-300 is an advanced mobile missile system which can shoot down aircraft and cruise missiles from up to 150 km away.
Other issues concerning Afghanistan, Syria, Iraq and also the launch of Iran's Bushehr nuclear power plant is in the agenda of talks with the visiting Russian Patrushev, said the Iranian Lawmaker.