Russian Foreign Minister Sergei Lavrov spoke to Iranian counterpart Abbas Araghchi on Monday and expressed concern over the spread of the Iran war to the Caspian Sea.
"Mutual concern was expressed about the dangerous spread of the conflict provoked by Washington and Tel Aviv to the Caspian Sea area," Russia's foreign ministry said.
Lavrov also said that attacks on Iran's nuclear infrastructure including Bushehr posed "unacceptable risks to the safety of Russian personnel and are fraught with catastrophic environmental consequences".
Araghchi and Lavrov held their call after US President Donald Trump revealed Washington and Tehran had held "very good and productive conversations regarding a complete and total resolution of our hostilities."
Lavrov called for an "immediate cessation of hostilities and a political settlement that takes into account the legitimate interests of all parties involved, above all Iran," the Russian foreign ministry said in a readout of the call, which it said was initiated by Tehran.