Kremlin spokesman Dmitry Peskov said that he doesn't know the exact date for supplying S-300 air defense systems to Iran, as Moscow hasn't received payment yet.
"There is a problem related to payment. The deal has not been paid properly yet," he added.
Peskov also did not specify whether the issue of S-300 supplies was discussed at Russian President Vladimir Putin’s meeting with Iranian Defense Minister Hossein Dehghan. "Various aspects of military-technical cooperation were touched upon," TASS cited Peskov as saying.