Iranian Foreign Ministry Spokesman Ramin Mehman-Parast stressed that Tehran and Moscow hold close stances over many Caspian-related issues, FNA reported.
Mehman-Parast made the announcement in a meeting with Russia's Deputy Foreign Minister for Middle-East Affairs Mikhail Bogdanov.
The Iranian spokesman also called on the Caspian Sea littoral states to increase efforts to adopt a legal regime for the world's largest lake.
As regards the developments in the region, he underlined the important role of the regional states in the establishment of security and stability in the region.
Bogdanov, for his part, pointed to the good ties between Tehran and Moscow, and called for the further expansion of mutual cooperation in all fields, including the media grounds.
The Caspian Sea is the largest enclosed body of water on earth by area, variously classed as the world's largest lake or a full-fledged sea.
Caspian Sea littoral states consist of Iran, Russia, Kazakhstan, Turkmenistan and Azerbaijan. They have been debating their share in the Caspian Sea legal regime since the collapse of the Soviet Union in 1991.