A report Thursday said that Russia had decided to suspend the sale of S-300 missiles to Iran, as a result of the UN Security Council imposing further sanctions on Tehran over its nuclear program. The report attributed the information to a source in the Russian defense ministry. The deal for the sale of the anti-aircraft missiles had been struck in 2007, but Russia has delayed their delivery until now. The S-300 air defense system is an advanced mobile system that can shoot down aircraft and cruise missiles from up to 150 km away. In the past, Russian officials had said that the impostion of sanctions on Iran would not prevent the sale.