Russia does not supply only military products to Iran. The construction of a nuclear power plant in Bushehr is just another example for this.
“For Russia, Iran is a friendly state. Russia is in constant dialogue with Iran, advising it to comply with its international obligations. Clever people in Washington understand that Russia has vast interests in Iran because it is an ally and strategic friend and neighbour, so it is natural that Russia extends some commercial projects in Iran” commented military expert Viktor Mizin from the Moscow Institute of International Affairs.