MOSCOW -- Head of the Russian Foreign Ministry Department for Northern American Affairs, Vladimir Chekhikoshpovili, on Wednesday termed as "unfounded" the United States concern over the bilateral cooperation between Tehran and Moscow. Talking to reporters before a visit to Moscow by U.S. President George W. Bush, Chekhikoshpovili said the Iran-Russia cooperation is in agreement with the international laws and regulations and would not disturb a balance in the region. He said U.S. should not be concerned over the Iran-Russia cooperation in the same way that Moscow is not concerned over the cooperation between the Saudi Arabia and the United States and its arms sales to the Arab state. Bush is to pay a visit to Russia on May 23-26 to discuss issues of mutual interest, IRNA reported. Iran and Russia have repeatedly announced that cooperation between Moscow and Tehran in connection with the construction of Nuclear Power Plants in Iran's Bushehr Province are meant for peaceful purposes. The Russian official added that Russia's ties with Iran would not pose any threat to regional and global security.