Saudi buys Russia's S-400 anti-aircraft missile systems

Saudi buys Russia's S-400 anti-aircraft missile systems

Meanwhile, Kremlin spokesman Dmitry Peskov told reporters Monday that talks with Riyadh about buying its S-400 air-defense system were going well despite Saudi Arabia's THAAD order with the U.S.

The department said the sale of the equipment to the Saudi people would help provide a balance to a relatively unstable environment in the Gulf and to help the United States forces enlarge its allied grip on the region.

The Kremlin said Monday that its deal to sell Saudi Arabia the advanced S-400 system is progressing despite the key US ally getting approval to buy a Lockheed Martin ( LMT ) system Friday.

A Saudi official has commented on Moscow's role in the Middle East following the "landmark" visit of the Saudi King to Russian Federation last week. "This visit is the beginning of strategic cooperation", al Harithi said. "This process is very hard because Saudi Arabia has been closely connected with the United States for many years - financial, economic, political relations", political scientist Yury Pochta told Sputnik Radio.

Both Washington and Saudi Arabia accuse Tehran of aggressive and disruptive behavior in the region. Saudi Arabia's neighbours, Qatar and the United Arab Emirates, have also been supplied THAAD systems.

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The duo also plans to discuss perspectives for collaboration in research and development and experimental engineering works, as well as options for applying innovative solutions to a wide range of technological challenges.

China was the first foreign customer to have ordered S-400 from Russian Federation.

Soon after the arms deals with Moscow were announced, the Pentagon said the U.S. State Department had approved the possible sale of a THAAD antimissile defense system to Saudi Arabia at an estimated cost of $15 billion.

The S-400 is Russia's most advanced long-range anti-aircraft missile system and can carry three types of missiles capable of destroying targets, including ballistic and cruise missiles.