Russian arms-export giant Rosoboronexport said Thursday it would not drop its arms deal to sell the sophisticated S-300 anti-aircraft system to Iran, Press TV reported.
"I just don't quite understand why supplies of the S-300 system to Iran trouble you so much," the head of Rosoboronexport, Anatoly Isaikin, told reporters at a news conference on Thursday.
Iran struck a deal with Russia in 2007 to obtain the sophisticated defense system to improve its deterrence power.
According to western experts, the system would shield Iranian nuclear sites against military threats, amid ongoing Israeli warnings to launch military attacks against Iran.
The S-300 system, which can track targets and fire at aircraft 120 km (75 miles) away, features high jamming immunity and is able to simultaneously engage up to 100 targets.
The West has pressured Russia to drop the deal. However, Moscow says it sees no reason to do so.
"From my part, I just want to say I have nothing to add to these statements," Isaikin said.