The US State Department earlier in the day announced the sanction against Russian state arms exporter Rosoboron export and aircraft maker Sukhoi, along with five other companies from India, Cuba and the Democratic People's Republic of Korea, for their alleged arms deals with Iran.

"We consider this move by the U.S. State Department unacceptable. In effect, it amounts to one more unjustifiable attempt to force foreign companies to operate by U.S. domestic rules," the Foreign Ministry said in a statement.

"Our companies involved in military technological cooperation with foreign countries act in strict conformity with international law and Russian legislation, including commitments to nonproliferation and export control," the commentary said.

Russia "confines itself to exporting to Iran purely defensive armaments, which would not destabilize the situation in the region," it said.

Sukhoi denied the U.S. accusation.

"We are studying local laws very closely and never breached any rules," Sukhoi Deputy General Director Alexander Klementyev said on the Ekho Moskvy radio. "Sukhoi has not delivered anything to Iran for the past six or seven years," he said.