Russia will strictly adhere to a new UN Security Council resolution on Iran over the delivery of S-300 missiles to the Islamic Republic, a deputy foreign minister said on Friday.

Resolution 1929, adopted on Wednesday, imposes a fourth round of sanctions against Iran over its nuclear program, and includes tougher financial controls and an expanded arms embargo.

The document also stipulates a ban on Iran buying certain categories of heavy weapons, such as attack helicopters and missiles, and forbids any involvement in activities related to the development of nuclear-capable ballistic missiles.

"We will strictly and rigorously follow the criteria and requirements included in the resolution," Sergei Ryabkov said, referring to S-300 missiles.

Earlier the Foreign Ministry spokesman said the delivery of Russian S-300 surface-to-air missile systems to Iran would not be affected by new UN sanctions against Iran since they are not included in the UN Register of Conventional Arms.

Moscow signed a contract on supplying Iran with at least five S-300 systems in December 2005. However, the contract's implementation has so far been delayed.

The United States and Israel, which have not ruled out an attack on Iran over its nuclear program, have called on Russia not to deliver the missiles to Tehran.

The West is also concerned by Russia's role in helping Iran to build its first nuclear power plant in Bushehr. The head of the Russian State Atomic Energy corporation, Sergei Kiriyenko, said in May that the plant will begin operating by late summer.

MOSCOW, June 11 (RIA Novosti)