vestnik kavkaza- Russia will open a special service center�in Iran�offering after sale assistance for air defence systems, Presidential Aide for Military Cooperation�Vladimir Kozhin�said.

"We are creating a special service center in Iran, where we supplied�our air defense equipment�," he said, noting that the military technical cooperation to create Russian service centers "will be definitely developed."

In 2016, Russia�supplied Iran with a S-300 defensive anti-aircraft missile system on a previously signed contract, RIA Novosti recalls.