Russian President Dmitry Medvedev expressed Moscow's discontent with "Washington's unjust and unilateral move to cause trouble for Russian companies that have contracts with Iranian firms on a series of mutual peaceful nuclear cooperation," Russian Foreign Ministry spokesman Alexander Lukashevich told IRNA in Moscow on Thursday.
The Russian president made the remarks in his meeting with the US Vice President Joe Biden, who is in Moscow for meetings aimed at improving the US-Russian relations.
Lukashevich also quoted Medvedev as noting that "Russian firms abide by the avowed rules and principles set forth by the International Atomic Energy Agency (IAEA) in their peaceful nuclear cooperation with Iran."
He, declined to name the Russian companies, which have been slapped with unilateral sanctions by the United States, but stated that Medvedev denounced unilateral sanctions against Tehran over its peaceful domestic nuclear program as "illegitimate" and" unacceptable."
Until now, the UN Security Council adopted six resolutions, four of which are aimed at imposing sanctions against Iran, demanding to abandon uranium enrichment, and two resolutions containing warnings .
The UN Security Council resolution 1929 was adopted in the summer of 2010, as well as additional unilateral sanctions were approved by the U.S. Congress and the FMs of all EU countries, which are mainly directed against the military, banking, financial and energy sectors of Iran.
Iran says that as a member of the International Atomic Energy Agency and a signatory to the Nuclear Non-Proliferation Treaty, it has the right to use peaceful nuclear energy.