"The topic of Iran was on agenda, it was touched upon but not in detail," Kremlin spokesman Dmitry Peskov said in a call with reporters on Wednesday, referring to talks between Russia and the US in Riyadh last month.
"We suggested making it a separate subject of our dialogue and our consultations in the future," Peskov added. "Russia's position is that the issue of Iran’s nuclear dossier needs to be solved only through political and diplomatic means ... Russia is ready to do everything possible for it."
Moscow and Tehran signed a strategic cooperation treaty in January which both said would further strengthen ties that have been growing in the last few years.
Russia has relied on Iranian-made drones in its war in Ukraine, while Iran has sought deeper economic and military ties with Moscow to counter US-led sanctions.
President Donald Trump's efforts to end the war in Ukraine may pave the way for further cooperation with Russian president Vladimir Putin, who has offered to leverage his unique standing in Tehran to mediate between Iran and the US.
Bloomberg reported on Tuesday that Russia has agreed to assist Washington in communicating with Iran on various issues, including its support for regional groups hostile to the US.