Russia's Defence Minister Sergei Shoigu welcomed Iran's Hossein Dehqan to discuss closer cooperation and regional security, at a time when Russia's ties with the West have plummeted to the lowest level since the Cold War over the crisis in Ukraine.
In the opening remarks at the start of their talks, carried by Russian news agencies, Dehqan criticised the US and added that his visit marks a "new level" in Russian-Iranian relations.
It wasn't clear when Shoigu could visit Iran.